dlls/kernel32/tests/comm.c

   1 /* Unit test suite for comm functions
   2  *
   3  * Copyright 2003 Kevin Groeneveld
   4  * Copyright 2005 Uwe Bonnes
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdio.h>
  22
  23 #include "ntstatus.h"
  24 #define WIN32_NO_STATUS
  25 #include "wine/test.h"
  26 #include "winternl.h"
  27 #include "winbase.h"
  28 #include "winnls.h"
  29
  30 #define TIMEOUT 1000   /* one second for Timeouts*/
  31 #define SLOWBAUD 150
  32 #define FASTBAUD 115200
  33 #define TIMEDELTA 150  /* 150 ms uncertainty allowed */
  34
  35 /* Define the appropriate LOOPBACK(s) TRUE if you have a Loopback cable with
  36  * the mentioned shorts connected to your Serial port
  37  */
  38 #define LOOPBACK_TXD_RXD  FALSE /* Sub-D 9: Short 2-3 */
  39 #define LOOPBACK_CTS_RTS  FALSE /* Sub-D 9: Short 7-8 */
  40 #define LOOPBACK_DTR_DSR  FALSE /* Sub-D 9: Short 4-6 */
  41 #define LOOPBACK_DTR_RING FALSE /* Sub-D 9: Short 4-9 */
  42 #define LOOPBACK_DTR_DCD  FALSE /* Sub-D 9: Short 4-1 */
  43 /* Many Linux serial drivers have the TIOCM_LOOP flag in the TIOCM_SET ioctl
  44  * available. For the 8250 this is equivalent to TXD->RXD, OUT2->DCD,
  45  * OUT1->RI, RTS->CTS and DTR->DSR
  46  */
  47 /* use variables and not #define to compile the code */
  48 static BOOL loopback_txd_rxd  = LOOPBACK_TXD_RXD;
  49 static BOOL loopback_rts_cts  = LOOPBACK_CTS_RTS;
  50 static BOOL loopback_dtr_dsr  = LOOPBACK_DTR_DSR;
  51 static BOOL loopback_dtr_ring = LOOPBACK_DTR_RING;
  52 static BOOL loopback_dtr_dcd  = LOOPBACK_DTR_DCD;
  53
  54 static NTSTATUS (WINAPI *pNtReadFile)(HANDLE hFile, HANDLE hEvent,
  55                                       PIO_APC_ROUTINE apc, void* apc_user,
  56                                       PIO_STATUS_BLOCK io_status, void* buffer, ULONG length,
  57                                       PLARGE_INTEGER offset, PULONG key);
  58 static NTSTATUS (WINAPI *pNtWriteFile)(HANDLE hFile, HANDLE hEvent,
  59                                        PIO_APC_ROUTINE apc, void* apc_user,
  60                                        PIO_STATUS_BLOCK io_status,
  61                                        const void* buffer, ULONG length,
  62                                        PLARGE_INTEGER offset, PULONG key);
  63
  64 typedef struct
  65 {
  66         char string[100];
  67         BOOL result;
  68         BOOL old_style;
  69         DCB dcb1, dcb2;
  70         COMMTIMEOUTS timeouts1, timeouts2;
  71 } TEST;
  72
  73 static const TEST test[] =
  74 {
  75         {
  76                 "baud=9600 parity=e data=5 stop=1 xon=on odsr=off octs=off dtr=on rts=on idsr=on",
  77                 TRUE, FALSE,
  78                 { 0x00000000, 0x00002580, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x05, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
  79                 { 0xffffffff, 0x00002580, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x05, 0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
  80                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
  81                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
  82         },
  83         {
  84                 "baud=0 parity=M data=6 stop=1.5 xon=off odsr=on octs=ON dtr=off rts=off idsr=OFF",
  85                 TRUE, FALSE,
  86                 { 0x00000000, 0x00000000, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x06, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
  87                 { 0xffffffff, 0x00000000, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x06, 0x03, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
  88                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
  89                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
  90         },
  91         {
  92                 "BAUD=4000000000 parity=n data=7 stop=2 to=off",
  93                 TRUE, FALSE,
  94                 { 0x00000000, 0xee6b2800, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
  95                 { 0xffffffff, 0xee6b2800, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x00, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
  96                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
  97                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }
  98         },
  99         {
 100                 "Baud=115200 Parity=O Data=8 To=On",
 101                 TRUE, FALSE,
 102                 { 0x00000000, 0x0001c200, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 103                 { 0xffffffff, 0x0001c200, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x01, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 104                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 },
 105                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 }
 106         },
 107         {
 108                 "PaRiTy=s           Data=7          DTR=on",
 109                 TRUE, FALSE,
 110                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 111                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x04, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 112                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 113                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 114         },
 115         {
 116                 "data=4",
 117                 FALSE, FALSE,
 118                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 119                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 120                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 121                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 122         },
 123         {
 124                 "data=9",
 125                 FALSE, FALSE,
 126                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 127                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 128                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 129                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 130         },
 131         {
 132                 "parity=no",
 133                 FALSE, FALSE,
 134                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 135                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 136                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 137                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 138         },
 139         {
 140                 "stop=0",
 141                 FALSE, FALSE,
 142                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 143                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 144                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 145                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 146         },
 147         {
 148                 "stop=1.501",
 149                 FALSE, FALSE,
 150                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 151                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 152                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 153                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 154         },
 155         {
 156                 "stop=3",
 157                 FALSE, FALSE,
 158                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 159                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 160                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 161                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 162         },
 163         {
 164                 "to=foobar",
 165                 FALSE, FALSE,
 166                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 167                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 168                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 169                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 170         },
 171         {
 172                 " baud=9600",
 173                 FALSE, FALSE,
 174                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 175                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 176                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 177                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 178         },
 179         {
 180                 "baud= 9600",
 181                 FALSE, FALSE,
 182                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 183                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 184                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 185                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 186         },
 187         {
 188                 "baud=9600,data=8",
 189                 FALSE, FALSE,
 190                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 191                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 192                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 193                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 194         },
 195         {
 196                 "11,n,8,1",
 197                 TRUE, TRUE,
 198                 { 0x00000000, 0x0000006e, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 199                 { 0xffffffff, 0x0000006e, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 200                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 201                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 202         },
 203         {
 204                 "30 ,E, 5,1.5",
 205                 TRUE, TRUE,
 206                 { 0x00000000, 0x0000012c, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x05, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 207                 { 0xffffffff, 0x0000012c, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x05, 0x02, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 208                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 209                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 210         },
 211         {
 212                 "60, m, 6, 2 ",
 213                 TRUE, TRUE,
 214                 { 0x00000000, 0x00000258, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x06, 0x03, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 215                 { 0xffffffff, 0x00000258, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x06, 0x03, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 216                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 217                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 218         },
 219         {
 220                 "12 , o , 7 , 1",
 221                 TRUE, TRUE,
 222                 { 0x00000000, 0x000004b0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 223                 { 0xffffffff, 0x000004b0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x01, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 224                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 225                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 226         },
 227         {
 228                 "24,s,8,1.5",
 229                 TRUE, TRUE,
 230                 { 0x00000000, 0x00000960, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 231                 { 0xffffffff, 0x00000960, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x04, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 232                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 233                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 234         },
 235         {
 236                 "48,n,8,1,p",
 237                 TRUE, TRUE,
 238                 { 0x00000000, 0x000012c0, 0, 0, 1, 1, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 239                 { 0xffffffff, 0x000012c0, 1, 1, 1, 1, 2, 1, 1, 0, 0, 1, 1, 2, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 240                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 241                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 242         },
 243         {
 244                 "96,N,8,1 , x ",
 245                 TRUE, TRUE,
 246                 { 0x00000000, 0x00002580, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 247                 { 0xffffffff, 0x00002580, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 248                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 249                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 250         },
 251         {
 252                 "19, e, 7, 1, x",
 253                 TRUE, TRUE,
 254                 { 0x00000000, 0x00004b00, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 255                 { 0xffffffff, 0x00004b00, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 256                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 257                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 258         },
 259         {
 260                 "0,M,7,1,P",
 261                 TRUE, TRUE,
 262                 { 0x00000000, 0x00000000, 0, 0, 1, 1, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 263                 { 0xffffffff, 0x00000000, 1, 1, 1, 1, 2, 1, 1, 0, 0, 1, 1, 2, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x03, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 264                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 265                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 266         },
 267         {
 268                 "4000000000,O,7,1.5,X",
 269                 TRUE, TRUE,
 270                 { 0x00000000, 0xee6b2800, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 271                 { 0xffffffff, 0xee6b2800, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x01, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 272                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 273                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 274         },
 275         {
 276                 "96,N,8,1 to=on",
 277                 FALSE, TRUE,
 278                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 279                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 280                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 281                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 282         },
 283         {
 284                 "96,NO,8,1",
 285                 FALSE, TRUE,
 286                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 287                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 288                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 289                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 290         },
 291         {
 292                 "96,N,4,1",
 293                 FALSE, TRUE,
 294                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 295                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 296                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 297                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 298         },
 299         {
 300                 "96,N,9,1",
 301                 FALSE, TRUE,
 302                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 303                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 304                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 305                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 306         },
 307         {
 308                 "96,N,8,0",
 309                 FALSE, TRUE,
 310                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 311                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 312                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 313                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 314         },
 315         {
 316                 "96,N,8,3",
 317                 FALSE, TRUE,
 318                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 319                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 320                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 321                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 322         },
 323         {
 324                 "96,N,8,1,K",
 325                 FALSE, TRUE,
 326                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 327                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 328                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 329                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 330         },
 331         {
 332                 "COM0:baud=115200",
 333                 FALSE, FALSE,
 334                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 335                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 336                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 337                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 338         },
 339         {
 340                 "COMx:baud=38400 data=8",
 341                 TRUE, FALSE,
 342                 { 0x00000000, 0x00009600, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 343                 { 0xffffffff, 0x00009600, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 344                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 345                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 346         },
 347         {
 348                 "COMx  :to=on stop=1.5",
 349                 TRUE, FALSE,
 350                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 351                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 352                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 },
 353                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 }
 354         },
 355         {
 356                 "COMx:               baud=12345     data=7",
 357                 TRUE, FALSE,
 358                 { 0x00000000, 0x00003039, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 359                 { 0xffffffff, 0x00003039, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 360                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 361                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 362         },
 363         {
 364                 "COMx : xon=on odsr=off",
 365                 TRUE, FALSE,
 366                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 367                 { 0xffffffff, 0xffffffff, 1, 1, 1, 0, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 368                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 369                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 370         },
 371         {
 372                 "COM0:9600,N,8,1",
 373                 FALSE, TRUE,
 374                 { 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 375                 { 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 376                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 377                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 378         },
 379         {
 380                 "COMx:9600,N,8,1",
 381                 TRUE, TRUE,
 382                 { 0x00000000, 0x00002580, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 383                 { 0xffffffff, 0x00002580, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 384                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 385                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 386         },
 387         {
 388                 "COMx:  11,E,7,2",
 389                 TRUE, TRUE,
 390                 { 0x00000000, 0x0000006e, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 391                 { 0xffffffff, 0x0000006e, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x02, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 392                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 393                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 394         },
 395         {
 396                 "COMx  :19,M,5,1",
 397                 TRUE, TRUE,
 398                 { 0x00000000, 0x00004b00, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x05, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 399                 { 0xffffffff, 0x00004b00, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x05, 0x03, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 400                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 401                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 402         },
 403         {
 404                 "COMx  :    57600,S,6,2,x",
 405                 TRUE, TRUE,
 406                 { 0x00000000, 0x0000e100, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x06, 0x04, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
 407                 { 0xffffffff, 0x0000e100, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x06, 0x04, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
 408                 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
 409                 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
 410         },
 411 };
 412
 413 #define TEST_COUNT (sizeof(test) / sizeof(TEST))
 414
 415 /* This function can be useful if you are modifying the test cases and want to
 416    output the contents of a DCB structure. */
 417 /*static print_dcb(DCB *pdcb)
 418 {
 419         printf("0x%08x, 0x%08x, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, 0x%05x, 0x%04x, 0x%04x, 0x%04x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%04x\n",
 420                 pdcb->DCBlength,
 421                 pdcb->BaudRate,
 422                 pdcb->fBinary,
 423                 pdcb->fParity,
 424                 pdcb->fOutxCtsFlow,
 425                 pdcb->fOutxDsrFlow,
 426                 pdcb->fDtrControl,
 427                 pdcb->fDsrSensitivity,
 428                 pdcb->fTXContinueOnXoff,
 429                 pdcb->fOutX,
 430                 pdcb->fInX,
 431                 pdcb->fErrorChar,
 432                 pdcb->fNull,
 433                 pdcb->fRtsControl,
 434                 pdcb->fAbortOnError,
 435                 pdcb->fDummy2,
 436                 pdcb->wReserved,
 437                 pdcb->XonLim,
 438                 pdcb->XoffLim,
 439                 pdcb->ByteSize,
 440                 pdcb->Parity,
 441                 pdcb->StopBits,
 442                 pdcb->XonChar & 0xff,
 443                 pdcb->XoffChar & 0xff,
 444                 pdcb->ErrorChar & 0xff,
 445                 pdcb->EofChar & 0xff,
 446                 pdcb->EvtChar & 0xff,
 447                 pdcb->wReserved1 & 0xffff );
 448 } */
 449
 450 static void check_result(const char *function, const TEST *ptest, int initial_value, BOOL result)
 451 {
 452         DWORD LastError = GetLastError();
 453         DWORD CorrectError = (ptest->result ? 0xdeadbeef : ERROR_INVALID_PARAMETER);
 454
 455         ok(LastError == CorrectError, "%s(\"%s\"), 0x%02x: GetLastError() returned %d, should be %d\n", function, ptest->string, initial_value, LastError, CorrectError);
 456         ok(result == ptest->result, "%s(\"%s\"), 0x%02x: return value should be %s\n", function, ptest->string, initial_value, ptest->result ? "TRUE" : "FALSE");
 457 }
 458
 459 #define check_dcb_member(a,b) ok(pdcb1->a == pdcb2->a, "%s(\"%s\"), 0x%02x: "#a" is "b", should be "b"\n", function, ptest->string, initial_value, pdcb1->a, pdcb2->a)
 460 #define check_dcb_member2(a,c,b) if(pdcb2->a == c) { check_dcb_member(a,b); } else { ok(pdcb1->a == pdcb2->a || pdcb1->a == c, "%s(\"%s\"), 0x%02x: "#a" is "b", should be "b" or "b"\n", function, ptest->string, initial_value, pdcb1->a, pdcb2->a, c); }
 461
 462 static void check_dcb(const char *function, const TEST *ptest, int initial_value, const DCB *pdcb1, const DCB *pdcb2)
 463 {
 464         /* DCBlength is a special case since Win 9x sets it but NT does not.
 465            We will accept either as correct. */
 466         check_dcb_member2(DCBlength, (DWORD)sizeof(DCB), "%u");
 467
 468         /* For old style control strings Win 9x does not set the next five members, NT does. */
 469         if(ptest->old_style && ptest->result)
 470         {
 471                 check_dcb_member2(fOutxCtsFlow, ((unsigned int)initial_value & 1), "%u");
 472                 check_dcb_member2(fDtrControl, ((unsigned int)initial_value & 3), "%u");
 473                 check_dcb_member2(fOutX, ((unsigned int)initial_value & 1), "%u");
 474                 check_dcb_member2(fInX, ((unsigned)initial_value & 1), "%u");
 475                 check_dcb_member2(fRtsControl, ((unsigned)initial_value & 3), "%u");
 476         }
 477         else
 478         {
 479                 check_dcb_member(fOutxCtsFlow, "%u");
 480                 check_dcb_member(fDtrControl, "%u");
 481                 check_dcb_member(fOutX, "%u");
 482                 check_dcb_member(fInX, "%u");
 483                 check_dcb_member(fRtsControl, "%u");
 484         }
 485
 486         if(ptest->result)
 487         {
 488                 /* For the idsr=xxx parameter, NT sets fDsrSensitivity, 9x sets
 489                    fOutxDsrFlow. */
 490                 if(!ptest->old_style)
 491                 {
 492                         check_dcb_member2(fOutxDsrFlow, pdcb2->fDsrSensitivity, "%u");
 493                         check_dcb_member2(fDsrSensitivity, pdcb2->fOutxDsrFlow, "%u");
 494                 }
 495                 else
 496                 {
 497                         /* For old style control strings Win 9x does not set the
 498                            fOutxDsrFlow member, NT does. */
 499                         check_dcb_member2(fOutxDsrFlow, ((unsigned int)initial_value & 1), "%u");
 500                         check_dcb_member(fDsrSensitivity, "%u");
 501                 }
 502         }
 503         else
 504         {
 505                 check_dcb_member(fOutxDsrFlow, "%u");
 506                 check_dcb_member(fDsrSensitivity, "%u");
 507         }
 508
 509         /* Check the result of the DCB members. */
 510         check_dcb_member(BaudRate, "%u");
 511         check_dcb_member(fBinary, "%u");
 512         check_dcb_member(fParity, "%u");
 513         check_dcb_member(fTXContinueOnXoff, "%u");
 514         check_dcb_member(fErrorChar, "%u");
 515         check_dcb_member(fNull, "%u");
 516         check_dcb_member(fAbortOnError, "%u");
 517         check_dcb_member(fDummy2, "%u");
 518         check_dcb_member(wReserved, "%u");
 519         check_dcb_member(XonLim, "%u");
 520         check_dcb_member(XoffLim, "%u");
 521         check_dcb_member(ByteSize, "%u");
 522         check_dcb_member(Parity, "%u");
 523         check_dcb_member(StopBits, "%u");
 524         check_dcb_member(XonChar, "%d");
 525         check_dcb_member(XoffChar, "%d");
 526         check_dcb_member(ErrorChar, "%d");
 527         check_dcb_member(EofChar, "%d");
 528         check_dcb_member(EvtChar, "%d");
 529         check_dcb_member(wReserved1, "%u");
 530 }
 531
 532 #define check_timeouts_member(a) ok(ptimeouts1->a == ptimeouts2->a, "%s(\"%s\"), 0x%02x: "#a" is %u, should be %u\n", function, ptest->string, initial_value, ptimeouts1->a, ptimeouts2->a);
 533
 534 static void check_timeouts(const char *function, const TEST *ptest, int initial_value, const COMMTIMEOUTS *ptimeouts1, const COMMTIMEOUTS *ptimeouts2)
 535 {
 536         check_timeouts_member(ReadIntervalTimeout);
 537         check_timeouts_member(ReadTotalTimeoutMultiplier);
 538         check_timeouts_member(ReadTotalTimeoutConstant);
 539         check_timeouts_member(WriteTotalTimeoutMultiplier);
 540         check_timeouts_member(WriteTotalTimeoutConstant);
 541 }
 542
 543 static void test_BuildCommDCBA(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb)
 544 {
 545         BOOL result;
 546         DCB dcb;
 547
 548         /* set initial conditions */
 549         memset(&dcb, initial_value, sizeof(DCB));
 550         SetLastError(0xdeadbeef);
 551
 552         result = BuildCommDCBA(string, &dcb);
 553
 554         /* check results */
 555         check_result("BuildCommDCBA", ptest, initial_value, result);
 556         check_dcb("BuildCommDCBA", ptest, initial_value, &dcb, pexpected_dcb);
 557 }
 558
 559 static void test_BuildCommDCBAndTimeoutsA(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb, const COMMTIMEOUTS *pexpected_timeouts)
 560 {
 561         BOOL result;
 562         DCB dcb;
 563         COMMTIMEOUTS timeouts;
 564
 565         /* set initial conditions */
 566         memset(&dcb, initial_value, sizeof(DCB));
 567         memset(&timeouts, initial_value, sizeof(COMMTIMEOUTS));
 568         SetLastError(0xdeadbeef);
 569
 570         result = BuildCommDCBAndTimeoutsA(string, &dcb, &timeouts);
 571
 572         /* check results */
 573         check_result("BuildCommDCBAndTimeoutsA", ptest, initial_value, result);
 574         check_dcb("BuildCommDCBAndTimeoutsA", ptest, initial_value, &dcb, pexpected_dcb);
 575         check_timeouts("BuildCommDCBAndTimeoutsA", ptest, initial_value, &timeouts, pexpected_timeouts);
 576 }
 577
 578 static void test_BuildCommDCBW(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb)
 579 {
 580         BOOL result;
 581         DCB dcb;
 582         WCHAR wide_string[sizeof(ptest->string)];
 583         static int reportedDCBW = 0;
 584
 585         MultiByteToWideChar(CP_ACP, 0, string, -1, wide_string, sizeof(wide_string) / sizeof(WCHAR));
 586
 587         /* set initial conditions */
 588         memset(&dcb, initial_value, sizeof(DCB));
 589         SetLastError(0xdeadbeef);
 590
 591         result = BuildCommDCBW(wide_string, &dcb);
 592
 593         if(GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
 594         {
 595                 if(!reportedDCBW++)
 596                         win_skip("BuildCommDCBW is not implemented\n");
 597                 return;
 598         }
 599
 600         /* check results */
 601         check_result("BuildCommDCBW", ptest, initial_value, result);
 602         check_dcb("BuildCommDCBW", ptest, initial_value, &dcb, pexpected_dcb);
 603 }
 604
 605 static void test_BuildCommDCBAndTimeoutsW(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb, const COMMTIMEOUTS *pexpected_timeouts)
 606 {
 607         BOOL result;
 608         DCB dcb;
 609         COMMTIMEOUTS timeouts;
 610         WCHAR wide_string[sizeof(ptest->string)];
 611         static int reportedDCBAndTW = 0;
 612
 613         MultiByteToWideChar(CP_ACP, 0, string, -1, wide_string, sizeof(wide_string) / sizeof(WCHAR));
 614
 615         /* set initial conditions */
 616         memset(&dcb, initial_value, sizeof(DCB));
 617         memset(&timeouts, initial_value, sizeof(COMMTIMEOUTS));
 618         SetLastError(0xdeadbeef);
 619
 620         result = BuildCommDCBAndTimeoutsW(wide_string, &dcb, &timeouts);
 621
 622         if(GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
 623         {
 624                 if(!reportedDCBAndTW++)
 625                         win_skip("BuildCommDCBAndTimeoutsW is not implemented\n");
 626                 return;
 627         }
 628
 629         /* check results */
 630         check_result("BuildCommDCBAndTimeoutsW", ptest, initial_value, result);
 631         check_dcb("BuildCommDCBAndTimeoutsW", ptest, initial_value, &dcb, pexpected_dcb);
 632         check_timeouts("BuildCommDCBAndTimeoutsW", ptest, initial_value, &timeouts, pexpected_timeouts);
 633 }
 634
 635 static void test_BuildCommDCB(void)
 636 {
 637         char port_name[] = "COMx";
 638         char port = 0;
 639         unsigned int i;
 640         char *ptr;
 641
 642         /* Some of these tests require a valid COM port.  This loop will try to find
 643            a valid port. */
 644         for(port_name[3] = '1'; port_name[3] <= '9'; port_name[3]++)
 645         {
 646                 COMMCONFIG commconfig;
 647                 DWORD size = sizeof(COMMCONFIG);
 648
 649                 if(GetDefaultCommConfigA(port_name, &commconfig, &size))
 650                 {
 651                         port = port_name[3];
 652                         break;
 653                 }
 654         }
 655
 656         if(!port)
 657                 trace("Could not find a valid COM port.  Some tests will be skipped.\n");
 658
 659         for(i = 0; i < TEST_COUNT; i++)
 660         {
 661                 char string[sizeof(test[i].string)];
 662
 663                 strcpy(string, test[i].string);
 664
 665                 /* Check if this test case needs a valid COM port. */
 666                 ptr = strstr(string, "COMx");
 667
 668                 /* If required, substitute valid port number into device control string. */
 669                 if(ptr)
 670                 {
 671                         if(port)
 672                                 ptr[3] = port;
 673                         else
 674                                 continue;
 675                 }
 676
 677                 test_BuildCommDCBA(string, &test[i], 0x00, &test[i].dcb1);
 678                 test_BuildCommDCBA(string, &test[i], 0xff, &test[i].dcb2);
 679                 test_BuildCommDCBAndTimeoutsA(string, &test[i], 0x00, &test[i].dcb1, &test[i].timeouts1);
 680                 test_BuildCommDCBAndTimeoutsA(string, &test[i], 0xff, &test[i].dcb2, &test[i].timeouts2);
 681
 682                 test_BuildCommDCBW(string, &test[i], 0x00, &test[i].dcb1);
 683                 test_BuildCommDCBW(string, &test[i], 0xff, &test[i].dcb2);
 684                 test_BuildCommDCBAndTimeoutsW(string, &test[i], 0x00, &test[i].dcb1, &test[i].timeouts1);
 685                 test_BuildCommDCBAndTimeoutsW(string, &test[i], 0xff, &test[i].dcb2, &test[i].timeouts2);
 686         }
 687 }
 688
 689 static HANDLE test_OpenComm(BOOL doOverlap)
 690 {
 691     HANDLE hcom = INVALID_HANDLE_VALUE;
 692     char port_name[] = "COMx";
 693     static BOOL shown = FALSE;
 694     DWORD errors;
 695     COMSTAT comstat;
 696
 697     /* Try to find a port */
 698     for(port_name[3] = '1'; port_name[3] <= '9'; port_name[3]++)
 699     {
 700         hcom = CreateFileA( port_name, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
 701                            (doOverlap)?FILE_FLAG_OVERLAPPED:0, NULL );
 702         if (hcom != INVALID_HANDLE_VALUE)
 703             break;
 704     }
 705     if(!shown)
 706     {
 707         if (hcom == INVALID_HANDLE_VALUE)
 708             trace("Could not find a valid COM port.\n");
 709         else
 710             trace("Found Com port %s. Connected devices may disturb results\n", port_name);
 711         /*shown = TRUE; */
 712     }
 713     if (hcom != INVALID_HANDLE_VALUE)
 714     {
 715         BOOL ret;
 716
 717         ret = ClearCommError(hcom, &errors, &comstat);
 718         if (!ret && (GetLastError() == ERROR_NOT_READY || GetLastError() == ERROR_INVALID_HANDLE))
 719         {
 720             if (GetLastError() == ERROR_NOT_READY)
 721                 trace("%s doesn't respond, skipping the test\n", port_name);
 722             else
 723                 trace("%s is not a real serial port, skipping the test\n", port_name);
 724             CloseHandle(hcom);
 725             return INVALID_HANDLE_VALUE;
 726         }
 727
 728         ok(ret, "Unexpected error %u on open\n", GetLastError());
 729         ok(comstat.cbInQue == 0, "Unexpected %d chars in InQueue\n",comstat.cbInQue);
 730         ok(comstat.cbOutQue == 0, "Still pending %d charcters in OutQueue\n", comstat.cbOutQue);
 731         ok(errors == 0, "Unexpected errors 0x%08x\n", errors);
 732     }
 733     return hcom;
 734 }
 735
 736 static void test_GetModemStatus(HANDLE hcom)
 737 {
 738     DWORD ModemStat = 0;
 739
 740     ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
 741     trace("GetCommModemStatus returned 0x%08x->%s%s%s%s\n", ModemStat,
 742           (ModemStat &MS_RLSD_ON)?"MS_RLSD_ON ":"",
 743           (ModemStat &MS_RING_ON)?"MS_RING_ON ":"",
 744           (ModemStat &MS_DSR_ON)?"MS_DSR_ON ":"",
 745           (ModemStat &MS_CTS_ON)?"MS_CTS_ON ":"");
 746 }
 747
 748 /* When we don't write anything, Read should time out even on a loopbacked port */
 749 static void test_ReadTimeOut(void)
 750 {
 751     HANDLE hcom;
 752     DCB dcb;
 753     COMMTIMEOUTS timeouts;
 754     char rbuf[32];
 755     DWORD before, after, read, timediff, LastError;
 756     BOOL res;
 757
 758     hcom = test_OpenComm(FALSE);
 759     if (hcom == INVALID_HANDLE_VALUE) return;
 760
 761     test_GetModemStatus(hcom);
 762
 763     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
 764     dcb.BaudRate = FASTBAUD;
 765     dcb.ByteSize = 8;
 766     dcb.Parity = NOPARITY;
 767     dcb.fRtsControl=RTS_CONTROL_ENABLE;
 768     dcb.fDtrControl=DTR_CONTROL_ENABLE;
 769     dcb.StopBits = ONESTOPBIT;
 770     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
 771
 772     ZeroMemory( &timeouts, sizeof(timeouts));
 773     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
 774     ok(SetCommTimeouts(hcom, &timeouts),"SetCommTimeouts failed\n");
 775
 776     before = GetTickCount();
 777     SetLastError(0xdeadbeef);
 778     res = ReadFile(hcom, rbuf, sizeof(rbuf), &read, NULL);
 779     LastError = GetLastError();
 780     after = GetTickCount();
 781     ok( res == TRUE, "A timed-out read should return TRUE\n");
 782     ok( LastError == 0xdeadbeef, "err=%d\n", LastError);
 783     timediff = after - before;
 784     ok( timediff > TIMEOUT>>2 && timediff < TIMEOUT *2,
 785         "Unexpected TimeOut %d, expected %d\n", timediff, TIMEOUT);
 786
 787     CloseHandle(hcom);
 788 }
 789
 790 static void test_waittxempty(void)
 791 {
 792     HANDLE hcom;
 793     DCB dcb;
 794     COMMTIMEOUTS timeouts;
 795     char tbuf[]="test_waittxempty";
 796     DWORD before, after, bytes, timediff, evtmask, errors, i;
 797     BOOL res;
 798     DWORD baud = SLOWBAUD;
 799     OVERLAPPED ovl_write, ovl_wait, ovl_wait2;
 800     COMSTAT stat;
 801
 802     hcom = test_OpenComm(TRUE);
 803     if (hcom == INVALID_HANDLE_VALUE) return;
 804
 805     /* set a low baud rate to have ample time*/
 806     res = GetCommState(hcom, &dcb);
 807     ok(res, "GetCommState error %d\n", GetLastError());
 808     dcb.BaudRate = baud;
 809     dcb.ByteSize = 8;
 810     dcb.Parity = NOPARITY;
 811     dcb.fRtsControl=RTS_CONTROL_ENABLE;
 812     dcb.fDtrControl=DTR_CONTROL_ENABLE;
 813     dcb.StopBits = ONESTOPBIT;
 814     res = SetCommState(hcom, &dcb);
 815     ok(res, "SetCommState error %d\n", GetLastError());
 816
 817     ZeroMemory( &timeouts, sizeof(timeouts));
 818     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
 819     res = SetCommTimeouts(hcom, &timeouts);
 820     ok(res,"SetCommTimeouts error %d\n", GetLastError());
 821
 822     res = SetupComm(hcom, 1024, 1024);
 823     ok(res, "SetUpComm error %d\n", GetLastError());
 824
 825     /* calling SetCommMask after WriteFile leads to WaitCommEvent failures
 826      * due to timeout (no events) under testbot VMs and VirtualBox
 827      */
 828     res = SetCommMask(hcom, EV_TXEMPTY);
 829     ok(res, "SetCommMask error %d\n", GetLastError());
 830
 831     SetLastError(0xdeadbeef);
 832     res = WriteFile(hcom, tbuf, sizeof(tbuf), &bytes, NULL);
 833     ok(!res, "WriteFile on an overlapped handle without ovl structure should fail\n");
 834     ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
 835
 836     S(U(ovl_write)).Offset = 0;
 837     S(U(ovl_write)).OffsetHigh = 0;
 838     ovl_write.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 839     before = GetTickCount();
 840     SetLastError(0xdeadbeef);
 841     res = WriteFile(hcom, tbuf, sizeof(tbuf), &bytes, &ovl_write);
 842     after = GetTickCount();
 843     ok((!res && GetLastError() == ERROR_IO_PENDING) || (res && bytes == sizeof(tbuf)),
 844        "WriteFile returned %d, written %u bytes, error %d\n", res, bytes, GetLastError());
 845     if (!res) ok(!bytes, "expected 0, got %u\n", bytes);
 846     ok(after - before < 30, "WriteFile took %d ms to write %d Bytes at %d Baud\n",
 847        after - before, bytes, baud);
 848     /* don't wait for WriteFile completion */
 849
 850     S(U(ovl_wait)).Offset = 0;
 851     S(U(ovl_wait)).OffsetHigh = 0;
 852     ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 853     evtmask = 0;
 854     before = GetTickCount();
 855     SetLastError(0xdeadbeef);
 856     res = WaitCommEvent(hcom, &evtmask, &ovl_wait);
 857     ok(!res && GetLastError() == ERROR_IO_PENDING, "WaitCommEvent error %d\n", GetLastError());
 858     after = GetTickCount();
 859     ok(after - before < 30, "WaitCommEvent should have returned immediately, took %d ms\n", after - before);
 860     res = WaitForSingleObject(ovl_wait.hEvent, 1500);
 861     ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
 862     if (res == WAIT_OBJECT_0)
 863     {
 864         res = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
 865         ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
 866         ok(bytes == sizeof(evtmask), "expected %u, written %u\n", (UINT)sizeof(evtmask), bytes);
 867         res = TRUE;
 868     }
 869     else
 870     {
 871         /* unblock pending wait */
 872         trace("recovering after WAIT_TIMEOUT...\n");
 873         res = SetCommMask(hcom, EV_TXEMPTY);
 874         ok(res, "SetCommMask error %d\n", GetLastError());
 875
 876         res = WaitForSingleObject(ovl_wait.hEvent, TIMEOUT);
 877         ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
 878
 879         res = FALSE;
 880     }
 881     after = GetTickCount();
 882     ok(res, "WaitCommEvent error %d\n", GetLastError());
 883     ok(evtmask & EV_TXEMPTY, "WaitCommEvent: expected EV_TXEMPTY, got %#x\n", evtmask);
 884     CloseHandle(ovl_wait.hEvent);
 885
 886     timediff = after - before;
 887     trace("WaitCommEvent for EV_TXEMPTY took %d ms (timeout 1500)\n", timediff);
 888     ok(timediff < 1200, "WaitCommEvent used %d ms for waiting\n", timediff);
 889
 890     res = WaitForSingleObject(ovl_write.hEvent, 0);
 891     ok(res == WAIT_OBJECT_0, "WriteFile failed with a timeout\n");
 892     res = GetOverlappedResult(hcom, &ovl_write, &bytes, FALSE);
 893     ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
 894     ok(bytes == sizeof(tbuf), "expected %u, written %u\n", (UINT)sizeof(tbuf), bytes);
 895     CloseHandle(ovl_write.hEvent);
 896
 897     CloseHandle(hcom);
 898
 899     for (i = 0; i < 2; i++)
 900     {
 901         hcom = test_OpenComm(TRUE);
 902         if (hcom == INVALID_HANDLE_VALUE) return;
 903
 904         res = SetCommMask(hcom, EV_TXEMPTY);
 905         ok(res, "SetCommMask error %d\n", GetLastError());
 906
 907         if (i == 0)
 908         {
 909             S(U(ovl_write)).Offset = 0;
 910             S(U(ovl_write)).OffsetHigh = 0;
 911             ovl_write.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 912             before = GetTickCount();
 913             SetLastError(0xdeadbeef);
 914             res = WriteFile(hcom, tbuf, sizeof(tbuf), &bytes, &ovl_write);
 915             ok((!res && GetLastError() == ERROR_IO_PENDING) || (res && bytes == sizeof(tbuf)),
 916                "WriteFile returned %d, written %u bytes, error %d\n", res, bytes, GetLastError());
 917             if (!res) ok(!bytes, "expected 0, got %u\n", bytes);
 918
 919             ClearCommError(hcom, &errors, &stat);
 920             ok(stat.cbInQue == 0, "InQueue should be empty, got %d bytes\n", stat.cbInQue);
 921             ok(stat.cbOutQue != 0 || broken(stat.cbOutQue == 0) /* VM */, "OutQueue should not be empty\n");
 922             ok(errors == 0, "ClearCommErrors: Unexpected error 0x%08x\n", errors);
 923
 924             res = GetOverlappedResult(hcom, &ovl_write, &bytes, TRUE);
 925             ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
 926             ok(bytes == sizeof(tbuf), "expected %u, written %u\n", (UINT)sizeof(tbuf), bytes);
 927             CloseHandle(ovl_write.hEvent);
 928
 929             res = FlushFileBuffers(hcom);
 930             ok(res, "FlushFileBuffers error %d\n", GetLastError());
 931         }
 932
 933         ClearCommError(hcom, &errors, &stat);
 934         ok(stat.cbInQue == 0, "InQueue should be empty, got %d bytes\n", stat.cbInQue);
 935         ok(stat.cbOutQue == 0, "OutQueue should be empty, got %d bytes\n", stat.cbOutQue);
 936         ok(errors == 0, "ClearCommErrors: Unexpected error 0x%08x\n", errors);
 937
 938         S(U(ovl_wait)).Offset = 0;
 939         S(U(ovl_wait)).OffsetHigh = 0;
 940         ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 941         evtmask = 0;
 942         SetLastError(0xdeadbeef);
 943         res = WaitCommEvent(hcom, &evtmask, &ovl_wait);
 944         ok((!res && GetLastError() == ERROR_IO_PENDING) || res /* busy system */, "%d: WaitCommEvent error %d\n", i, GetLastError());
 945
 946         res = WaitForSingleObject(ovl_wait.hEvent, TIMEOUT);
 947         if (i == 0)
 948             ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
 949         else
 950             ok(res == WAIT_TIMEOUT, "WaitCommEvent should fail with a timeout\n");
 951         if (res == WAIT_OBJECT_0)
 952         {
 953             res = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
 954             ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
 955             ok(bytes == sizeof(evtmask), "expected %u, written %u\n", (UINT)sizeof(evtmask), bytes);
 956             ok(res, "WaitCommEvent error %d\n", GetLastError());
 957             ok(evtmask & EV_TXEMPTY, "WaitCommEvent: expected EV_TXEMPTY, got %#x\n", evtmask);
 958         }
 959         else
 960         {
 961             ok(!evtmask, "WaitCommEvent: expected 0, got %#x\n", evtmask);
 962
 963             S(U(ovl_wait2)).Offset = 0;
 964             S(U(ovl_wait2)).OffsetHigh = 0;
 965             ovl_wait2.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 966             SetLastError(0xdeadbeef);
 967             res = WaitCommEvent(hcom, &evtmask, &ovl_wait2);
 968             ok(!res, "WaitCommEvent should fail if there is a pending wait\n");
 969             ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
 970             CloseHandle(ovl_wait2.hEvent);
 971
 972             /* unblock pending wait */
 973             trace("recovering after WAIT_TIMEOUT...\n");
 974             res = SetCommMask(hcom, EV_TXEMPTY);
 975             ok(res, "SetCommMask error %d\n", GetLastError());
 976
 977             res = WaitForSingleObject(ovl_wait.hEvent, TIMEOUT);
 978             ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
 979             CloseHandle(ovl_wait.hEvent);
 980         }
 981
 982         CloseHandle(hcom);
 983     }
 984 }
 985
 986 /* A new open handle should not return error or have bytes in the Queues */
 987 static void test_ClearCommError(void)
 988 {
 989     HANDLE hcom;
 990     DWORD  errors;
 991     COMSTAT lpStat;
 992
 993     hcom = test_OpenComm(FALSE);
 994     if (hcom == INVALID_HANDLE_VALUE) return;
 995
 996     ok(ClearCommError(hcom, &errors, &lpStat), "ClearCommError failed\n");
 997     ok(lpStat.cbInQue == 0, "Unexpected %d chars in InQueue\n", lpStat.cbInQue);
 998     ok(lpStat.cbOutQue == 0, "Unexpected %d chars in OutQueue\n", lpStat.cbOutQue);
 999     ok(errors == 0, "ClearCommErrors: Unexpected error 0x%08x\n", errors);
1000
1001     CloseHandle(hcom);
1002 }
1003
1004 static void test_non_pending_errors(void)
1005 {
1006     HANDLE hcom;
1007     DCB dcb;
1008     DWORD err;
1009
1010     hcom = test_OpenComm(FALSE);
1011     if (hcom == INVALID_HANDLE_VALUE) return;
1012
1013     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1014     dcb.ByteSize = 255; /* likely bogus */
1015     ok(!SetCommState(hcom, &dcb), "SetCommState should have failed\n");
1016     ok(ClearCommError(hcom, &err, NULL), "ClearCommError should succeed\n");
1017     ok(!(err & CE_MODE), "ClearCommError shouldn't set CE_MODE byte in this case (%x)\n", err);
1018
1019     CloseHandle(hcom);
1020 }
1021
1022 static void test_LoopbackRead(void)
1023 {
1024     HANDLE hcom;
1025     DCB dcb;
1026     COMMTIMEOUTS timeouts;
1027     char rbuf[32];
1028     DWORD before, after, diff, read, read1, written, evtmask=0, i;
1029     BOOL res;
1030     char tbuf[]="test_LoopbackRead";
1031
1032     if (!loopback_txd_rxd) return;
1033
1034     hcom = test_OpenComm(FALSE);
1035     if (hcom == INVALID_HANDLE_VALUE) return;
1036
1037     trace("Starting test_LoopbackRead\n");
1038     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1039     dcb.BaudRate = FASTBAUD;
1040     dcb.ByteSize = 8;
1041     dcb.Parity = NOPARITY;
1042     dcb.fRtsControl=RTS_CONTROL_ENABLE;
1043     dcb.fDtrControl=DTR_CONTROL_ENABLE;
1044     dcb.StopBits = ONESTOPBIT;
1045     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1046
1047     ZeroMemory( &timeouts, sizeof(timeouts));
1048     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
1049     ok(SetCommTimeouts(hcom, &timeouts),"SetCommTimeouts failed\n");
1050
1051     ok(SetCommMask(hcom, EV_TXEMPTY), "SetCommMask failed\n");
1052
1053     before = GetTickCount();
1054     ok(WriteFile(hcom,tbuf,sizeof(tbuf),&written, NULL), "WriteFile failed\n");
1055     after = GetTickCount();
1056     ok(written == sizeof(tbuf),"WriteFile %d bytes written\n", written);
1057     diff = after -before;
1058
1059     /* make sure all bytes are written, so Readfile will succeed in one call*/
1060     ok(WaitCommEvent(hcom, &evtmask, NULL), "WaitCommEvent failed\n");
1061     before = GetTickCount();
1062     ok(evtmask == EV_TXEMPTY,
1063                  "WaitCommEvent: Unexpected EvtMask 0x%08x, expected 0x%08x\n",
1064                  evtmask, EV_TXEMPTY);
1065     trace("Write %d ms WaitCommEvent EV_TXEMPTY %d ms\n", diff, before- after);
1066
1067     read=0;
1068     ok(ReadFile(hcom, rbuf, sizeof(rbuf), &read, NULL), "Readfile failed\n");
1069     ok(read == sizeof(tbuf),"ReadFile read %d bytes, expected \"%s\"\n", read,rbuf);
1070
1071     /* Now do the same with a slower Baud rate.
1072        As we request more characters than written, we will hit the timeout
1073     */
1074
1075     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1076     dcb.BaudRate = 9600;
1077     dcb.ByteSize = 8;
1078     dcb.Parity = NOPARITY;
1079     dcb.fRtsControl=RTS_CONTROL_ENABLE;
1080     dcb.fDtrControl=DTR_CONTROL_ENABLE;
1081     dcb.StopBits = ONESTOPBIT;
1082     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1083
1084     ok(SetCommMask(hcom, EV_RXCHAR), "SetCommMask failed\n");
1085     ok(WriteFile(hcom,tbuf,sizeof(tbuf),&written, NULL), "WriteFile failed\n");
1086     ok(written == sizeof(tbuf),"WriteFile %d bytes written\n", written);
1087
1088     trace("WaitCommEventEV_RXCHAR\n");
1089     ok(WaitCommEvent(hcom, &evtmask, NULL), "WaitCommEvent failed\n");
1090     ok(evtmask == EV_RXCHAR, "WaitCommEvent: Unexpected EvtMask 0x%08x, expected 0x%08x\n",
1091        evtmask, EV_RXCHAR);
1092
1093     before = GetTickCount();
1094     res = ReadFile(hcom, rbuf, sizeof(rbuf), &read, NULL);
1095     after = GetTickCount();
1096     ok(res, "Readfile failed\n");
1097     ok(read == sizeof(tbuf),"ReadFile read %d bytes\n", read);
1098     diff = after - before;
1099     trace("Readfile for %d chars took %d ms\n", read, diff);
1100     ok( (diff > TIMEOUT - TIMEDELTA) && (diff < TIMEOUT + TIMEDELTA),
1101         "Timedout Wait took %d ms, expected around %d\n", diff, TIMEOUT);
1102
1103     /* now do a plain read with slow speed
1104      * This will result in several low level reads and a timeout to happen
1105      */
1106     dcb.BaudRate = SLOWBAUD;
1107     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1108     ok(WriteFile(hcom,tbuf,sizeof(tbuf),&written, NULL), "WriteFile failed\n");
1109     before = GetTickCount();
1110     read = 0;
1111     read1 =0;
1112     i=0;
1113     do
1114     {
1115         res = ReadFile(hcom, rbuf+read, sizeof(rbuf)-read, &read1, NULL);
1116         ok(res, "Readfile failed\n");
1117         read += read1;
1118         i++;
1119     }
1120     while ((read < sizeof(tbuf)) && (i <10));
1121     after =  GetTickCount();
1122     ok( read == sizeof(tbuf),"ReadFile read %d bytes\n", read);
1123     trace("Plain Read for %d char at %d baud took %d ms\n", read, SLOWBAUD, after-before);
1124
1125     CloseHandle(hcom);
1126 }
1127
1128 static void test_LoopbackCtsRts(void)
1129 {
1130     HANDLE hcom;
1131     DWORD ModemStat = 0, defaultStat = 0;
1132     DCB dcb;
1133
1134     if (!loopback_rts_cts) return;
1135
1136     hcom = test_OpenComm(FALSE);
1137     if (hcom == INVALID_HANDLE_VALUE) return;
1138
1139     memset (&dcb, 0, sizeof (dcb));
1140     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1141     if (dcb.fRtsControl == RTS_CONTROL_HANDSHAKE)
1142     {
1143         trace("RTS_CONTROL_HANDSHAKE is set, so don't manipulate RTS\n");
1144         CloseHandle(hcom);
1145         return;
1146     }
1147     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1148     /* XP returns some values in the low nibble, so mask them out*/
1149     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1150     if(defaultStat & MS_CTS_ON)
1151     {
1152         ok(EscapeCommFunction(hcom, CLRRTS), "EscapeCommFunction failed to clear RTS\n");
1153         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1154         ok ((ModemStat & MS_CTS_ON) == 0, "CTS didn't react: 0x%04x,  expected 0x%04x\n",
1155             ModemStat, (defaultStat & ~MS_CTS_ON));
1156         ok(EscapeCommFunction(hcom, SETRTS), "EscapeCommFunction failed to clear RTS\n");
1157         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1158         ok (ModemStat ==  defaultStat, "Failed to restore CTS: 0x%04x, expected 0x%04x\n",
1159             ModemStat, defaultStat);
1160     }
1161     else
1162     {
1163         ok(EscapeCommFunction(hcom, SETRTS), "EscapeCommFunction failed to set RTS\n");
1164         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1165         ok ((ModemStat & MS_CTS_ON) == MS_CTS_ON,
1166             "CTS didn't react: 0x%04x,  expected 0x%04x\n",
1167             ModemStat, (defaultStat | MS_CTS_ON));
1168         ok(EscapeCommFunction(hcom, CLRRTS), "EscapeCommFunction failed to clear RTS\n");
1169         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1170         ok (ModemStat ==  defaultStat, "Failed to restore CTS: 0x%04x, expected 0x%04x\n",
1171             ModemStat, defaultStat);
1172     }
1173
1174     CloseHandle(hcom);
1175 }
1176
1177 static void test_LoopbackDtrDcd(void)
1178 {
1179     HANDLE hcom;
1180     DWORD ModemStat = 0, defaultStat = 0;
1181     DCB dcb;
1182
1183     if (!loopback_dtr_dcd) return;
1184
1185     hcom = test_OpenComm(FALSE);
1186     if (hcom == INVALID_HANDLE_VALUE) return;
1187
1188     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1189     if (dcb.fDtrControl == DTR_CONTROL_HANDSHAKE)
1190     {
1191         trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1192         CloseHandle(hcom);
1193         return;
1194     }
1195     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1196     /* XP returns some values in the low nibble, so mask them out*/
1197     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1198     if(defaultStat & MS_RLSD_ON)
1199     {
1200         ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1201         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1202         ok ((ModemStat & MS_RLSD_ON) == 0, "RLSD didn't react: 0x%04x,  expected 0x%04x\n",
1203             ModemStat, (defaultStat & ~MS_RLSD_ON));
1204         ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1205         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1206         ok (ModemStat ==  defaultStat, "Failed to restore RLSD: 0x%04x, expected 0x%04x\n",
1207             ModemStat, defaultStat);
1208     }
1209     else
1210     {
1211         ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1212         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1213         ok ((ModemStat & MS_RLSD_ON) == MS_RLSD_ON,
1214             "RLSD didn't react: 0x%04x,  expected 0x%04x\n",
1215             ModemStat, (defaultStat | MS_RLSD_ON));
1216         ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1217         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1218         ok (ModemStat ==  defaultStat, "Failed to restore RLSD: 0x%04x, expected 0x%04x\n",
1219             ModemStat, defaultStat);
1220     }
1221
1222     CloseHandle(hcom);
1223 }
1224
1225 static void test_LoopbackDtrDsr(void)
1226 {
1227     HANDLE hcom;
1228     DWORD ModemStat = 0, defaultStat = 0;
1229     DCB dcb;
1230
1231     if (!loopback_dtr_dsr) return;
1232
1233     hcom = test_OpenComm(FALSE);
1234     if (hcom == INVALID_HANDLE_VALUE) return;
1235
1236     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1237     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1238     {
1239         trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1240         CloseHandle(hcom);
1241         return;
1242     }
1243     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1244     /* XP returns some values in the low nibble, so mask them out*/
1245     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1246     if(defaultStat & MS_DSR_ON)
1247     {
1248         ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1249         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1250         ok ((ModemStat & MS_DSR_ON) == 0, "CTS didn't react: 0x%04x,  expected 0x%04x\n",
1251             ModemStat, (defaultStat & ~MS_DSR_ON));
1252         ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to clear DTR\n");
1253         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1254         ok (ModemStat ==  defaultStat, "Failed to restore DSR: 0x%04x, expected 0x%04x\n",
1255             ModemStat, defaultStat);
1256     }
1257     else
1258     {
1259         ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1260         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1261         ok ((ModemStat & MS_DSR_ON) == MS_DSR_ON,
1262             "CTS didn't react: 0x%04x,expected 0x%04x\n",
1263             ModemStat, (defaultStat | MS_DSR_ON));
1264         ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1265         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1266         ok (ModemStat ==  defaultStat, "Failed to restore DSR: 0x%04x, expected 0x%04x\n",
1267             ModemStat, defaultStat);
1268     }
1269
1270     CloseHandle(hcom);
1271 }
1272
1273 static void test_LoopbackDtrRing(void)
1274 {
1275     HANDLE hcom;
1276     DWORD ModemStat = 0, defaultStat = 0;
1277     DCB dcb;
1278
1279     if (!loopback_dtr_ring) return;
1280
1281     hcom = test_OpenComm(FALSE);
1282     if (hcom == INVALID_HANDLE_VALUE) return;
1283
1284     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1285     if (dcb.fDtrControl == DTR_CONTROL_HANDSHAKE)
1286     {
1287         trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1288         CloseHandle(hcom);
1289         return;
1290     }
1291     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1292     /* XP returns some values in the low nibble, so mask them out*/
1293     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1294     if(defaultStat & MS_RING_ON)
1295     {
1296         ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1297         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1298         ok ((ModemStat & MS_RING_ON) == 0, "RING didn't react: 0x%04x,  expected 0x%04x\n",
1299             ModemStat, (defaultStat & ~MS_RING_ON));
1300         ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1301         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1302         ok (ModemStat ==  defaultStat, "Failed to restore RING: 0x%04x, expected 0x%04x\n",
1303             ModemStat, defaultStat);
1304     }
1305     else
1306     {
1307         ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1308         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1309         ok ((ModemStat & MS_RING_ON) == MS_RING_ON,
1310             "RING didn't react: 0x%04x,expected 0x%04x\n",
1311             ModemStat, (defaultStat | MS_RING_ON));
1312         ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1313         ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1314         ok (ModemStat ==  defaultStat, "Failed to restore RING: 0x%04x, expected 0x%04x\n",
1315             ModemStat, defaultStat);
1316     }
1317
1318     CloseHandle(hcom);
1319 }
1320
1321 /*
1322  * Set up a WaitCommEvent for anything in the receive buffer,
1323  * then write to TX to put a character
1324  * into the RX buffer
1325  * Need Loopback TX->RX
1326 */
1327
1328 static void test_WaitRx(void)
1329 {
1330     OVERLAPPED overlapped, overlapped_w;
1331     HANDLE hcom, hComPortEvent, hComWriteEvent;
1332     DWORD before, after, after1, diff, success_wait = FALSE, success_write;
1333     DWORD err_wait, err_write, written, evtmask=0;
1334
1335     if (!loopback_txd_rxd) return;
1336
1337     hcom = test_OpenComm(TRUE);
1338     if (hcom == INVALID_HANDLE_VALUE) return;
1339
1340     ok(SetCommMask(hcom, EV_RXCHAR), "SetCommMask failed\n");
1341     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1342     ok(hComPortEvent != 0, "CreateEvent failed\n");
1343     ZeroMemory( &overlapped, sizeof(overlapped));
1344     overlapped.hEvent = hComPortEvent;
1345
1346     hComWriteEvent = CreateEventW( NULL, TRUE, FALSE, NULL );
1347     ok(hComWriteEvent != NULL, "CreateEvent res %d\n", GetLastError());
1348     ZeroMemory( &overlapped_w, sizeof(overlapped_w));
1349     overlapped_w.hEvent = hComWriteEvent;
1350
1351     before = GetTickCount();
1352     success_wait = WaitCommEvent(hcom, &evtmask, &overlapped);
1353     err_wait = GetLastError();
1354     after = GetTickCount();
1355     trace("Success 0x%08x err %d evtmask 0x%08x\n", success_wait, err_wait, evtmask);
1356     ok(success_wait || err_wait == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1357     trace("overlapped WaitCommEvent returned.\n");
1358
1359     success_write= WriteFile(hcom, "X", 1, &written, &overlapped_w);
1360     err_write = GetLastError();
1361     ok(success_write || err_write == ERROR_IO_PENDING,
1362        "overlapped WriteFile failed, err %d\n",
1363        err_write);
1364
1365     if (!success_write && (err_write == ERROR_IO_PENDING)) {
1366       success_write = WaitForSingleObjectEx(hComWriteEvent, TIMEOUT, TRUE);
1367       err_write = GetLastError();
1368       ok(success_write == WAIT_OBJECT_0, "WaitForSingleObjectEx, res %d, err %d\n",
1369          success_write, err_write);
1370     }
1371     Sleep(TIMEOUT >>1);
1372     success_write = GetOverlappedResult(hcom, &overlapped_w, &written, FALSE);
1373     err_write = GetLastError();
1374
1375     trace("Write after Wait res 0x%08x err %d\n",success_write, err_write);
1376     ok(success_write && written ==1, "Write after Wait res 0x%08x err %d\n",
1377        success_write, err_write);
1378
1379     if (!success_wait && (err_wait == ERROR_IO_PENDING)) {
1380       success_wait = WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE);
1381       err_wait = GetLastError();
1382       ok(success_wait == WAIT_OBJECT_0, "wait hComPortEvent, res 0x%08x, err %d\n",
1383          success_wait, err_wait);
1384     }
1385     success_wait = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1386     err_wait = GetLastError();
1387     after1 = GetTickCount();
1388     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1389           success_wait, err_wait, evtmask, after-before, after1-before);
1390
1391     ok(evtmask & EV_RXCHAR, "Detect  EV_RXCHAR: 0x%08x, expected 0x%08x\n",
1392        evtmask, EV_RXCHAR);
1393     diff = after1 - before;
1394     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1395         "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1396
1397     CloseHandle(hcom);
1398 }
1399
1400 /* Change the controlling line after the given timeout to the given state
1401    By the loopback, this should trigger the WaitCommEvent
1402 */
1403 static DWORD CALLBACK toggle_ctlLine(LPVOID arg)
1404 {
1405     DWORD_PTR *args = arg;
1406     DWORD timeout = args[0];
1407     DWORD ctl     = args[1];
1408     HANDLE hcom   = (HANDLE) args[2];
1409     HANDLE hComPortEvent = (HANDLE) args[3];
1410     DWORD success, err;
1411
1412     trace("toggle_ctlLine timeout %d ctl 0x%08x handle %p\n", timeout, ctl, hcom );
1413     Sleep(timeout);
1414     ok(EscapeCommFunction(hcom, ctl),"EscapeCommFunction 0x%08x failed\n", ctl);
1415     trace("toggle_ctline done\n");
1416     success = WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE);
1417     err = GetLastError();
1418     trace("toggle_ctline WaitForSingleObjectEx res 0x%08x err %d\n",
1419           success, err);
1420     return 0;
1421 }
1422
1423 /*
1424  * Wait for a change in CTS
1425  * Needs Loopback from DTR to CTS
1426  */
1427 static void test_WaitCts(void)
1428 {
1429     DCB dcb;
1430     OVERLAPPED overlapped;
1431     HANDLE hcom, hComPortEvent, alarmThread;
1432     DWORD_PTR args[4];
1433     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat = 0;
1434
1435     if (!loopback_rts_cts) return;
1436
1437     hcom = test_OpenComm(TRUE);
1438     if (hcom == INVALID_HANDLE_VALUE) return;
1439
1440     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1441     dcb.fRtsControl=RTS_CONTROL_ENABLE;
1442     dcb.fDtrControl=DTR_CONTROL_ENABLE;
1443     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1444     if (dcb.fDtrControl == RTS_CONTROL_DISABLE)
1445     {
1446         trace("RTS_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1447         CloseHandle(hcom);
1448         return;
1449     }
1450     args[0]= TIMEOUT >>1;
1451     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1452     if(defaultStat & MS_CTS_ON)
1453         args[1] = CLRRTS;
1454     else
1455         args[1] = SETRTS;
1456     args[2]=(DWORD_PTR)hcom;
1457
1458     trace("test_WaitCts timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1459
1460     ok(SetCommMask(hcom, EV_CTS), "SetCommMask failed\n");
1461     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1462     ok(hComPortEvent != 0, "CreateEvent failed\n");
1463     args[3] = (DWORD_PTR)hComPortEvent;
1464     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1465     /* Wait a minimum to let the thread start up */
1466     Sleep(10);
1467     trace("Thread created\n");
1468     ok(alarmThread !=0 , "CreateThread Failed\n");
1469
1470     ZeroMemory( &overlapped, sizeof(overlapped));
1471     overlapped.hEvent = hComPortEvent;
1472     before = GetTickCount();
1473     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1474     err = GetLastError();
1475     after = GetTickCount();
1476
1477     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1478     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1479     trace("overlapped WaitCommEvent returned.\n");
1480     if (!success && (err == ERROR_IO_PENDING))
1481         ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1482                      "WaitCts hComPortEvent failed\n");
1483     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1484     err = GetLastError();
1485     after1 = GetTickCount();
1486     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1487           success, err, evtmask, after-before, after1-before);
1488
1489     ok(evtmask & EV_CTS, "Failed to detect  EV_CTS: 0x%08x, expected 0x%08x\n",
1490                  evtmask, EV_CTS);
1491     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1492     if(defaultStat & MS_CTS_ON)
1493         ok((evtmask & MS_CTS_ON) == 0,"CTS didn't change state!\n");
1494     else
1495         ok((evtmask & MS_CTS_ON), "CTS didn't change state!\n");
1496
1497     diff = after1 - before;
1498     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1499                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1500
1501     /*restore RTS Settings*/
1502     if(defaultStat & MS_CTS_ON)
1503         args[1] = SETRTS;
1504     else
1505         args[1] = CLRRTS;
1506
1507     CloseHandle(hcom);
1508 }
1509
1510 /* Change the  Comm Mask while a Wait is going on
1511    WaitCommevent should return with a EVTMASK set to zero
1512 */
1513 static DWORD CALLBACK reset_CommMask(LPVOID arg)
1514 {
1515     DWORD_PTR *args = arg;
1516     DWORD timeout = args[0];
1517     HANDLE hcom   = (HANDLE) args[1];
1518
1519     trace(" Changing CommMask on the fly for handle %p after timeout %d\n",
1520           hcom, timeout);
1521     Sleep(timeout);
1522     ok(SetCommMask(hcom, 0),"SetCommMask %p failed\n", hcom);
1523     trace("SetCommMask changed\n");
1524     return 0;
1525 }
1526
1527 /* Set up a Wait for a change on CTS. We don't toggle any line, but we
1528    reset the CommMask and expect the wait to return with a mask of 0
1529    No special port connections needed
1530 */
1531 static void test_AbortWaitCts(void)
1532 {
1533     DCB dcb;
1534     OVERLAPPED overlapped;
1535     HANDLE hcom, hComPortEvent, alarmThread;
1536     DWORD_PTR args[2];
1537     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0;
1538
1539     hcom = test_OpenComm(TRUE);
1540     if (hcom == INVALID_HANDLE_VALUE) return;
1541
1542     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1543     if (dcb.fDtrControl == RTS_CONTROL_DISABLE)
1544     {
1545         trace("RTS_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1546         CloseHandle(hcom);
1547         return;
1548     }
1549     args[0]= TIMEOUT >>1;
1550     args[1]= (DWORD_PTR)hcom;
1551
1552     trace("test_AbortWaitCts timeout %ld handle %p\n",args[0], hcom);
1553
1554     ok(SetCommMask(hcom, EV_CTS), "SetCommMask failed\n");
1555     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1556     ok(hComPortEvent != 0, "CreateEvent failed\n");
1557     alarmThread = CreateThread(NULL, 0, reset_CommMask, args, 0, &alarmThreadId);
1558     /* Wait a minimum to let the thread start up */
1559     Sleep(10);
1560     trace("Thread created\n");
1561     ok(alarmThread !=0 , "CreateThread Failed\n");
1562
1563     ZeroMemory( &overlapped, sizeof(overlapped));
1564     overlapped.hEvent = hComPortEvent;
1565     before = GetTickCount();
1566     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1567     err = GetLastError();
1568     after = GetTickCount();
1569
1570     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1571     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1572     trace("overlapped WaitCommEvent returned.\n");
1573     if (!success && (err == ERROR_IO_PENDING))
1574         ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1575                      "AbortWaitCts hComPortEvent failed\n");
1576     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1577     err = GetLastError();
1578     after1 = GetTickCount();
1579     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1580           success, err, evtmask, after-before, after1-before);
1581
1582     ok(evtmask == 0, "Incorrect EventMask 0x%08x returned on Wait aborted bu SetCommMask, expected 0x%08x\n",
1583                  evtmask, 0);
1584     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1585     diff = after1 - before;
1586     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1587                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1588
1589     CloseHandle(hcom);
1590 }
1591
1592 /*
1593  * Wait for a change in DSR
1594  * Needs Loopback from DTR to DSR
1595  */
1596 static void test_WaitDsr(void)
1597 {
1598     DCB dcb;
1599     OVERLAPPED overlapped;
1600     HANDLE hcom, hComPortEvent, alarmThread;
1601     DWORD_PTR args[3];
1602     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat = 0;
1603
1604     if (!loopback_dtr_dsr) return;
1605
1606     hcom = test_OpenComm(TRUE);
1607     if (hcom == INVALID_HANDLE_VALUE) return;
1608
1609     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1610     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1611     {
1612         trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1613         CloseHandle(hcom);
1614         return;
1615     }
1616     args[0]= TIMEOUT >>1;
1617     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1618     if(defaultStat & MS_DSR_ON)
1619         args[1] = CLRDTR;
1620     else
1621         args[1] = SETDTR;
1622     args[2]= (DWORD_PTR)hcom;
1623
1624     trace("test_WaitDsr timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1625
1626     ok(SetCommMask(hcom, EV_DSR), "SetCommMask failed\n");
1627     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1628     ok(hComPortEvent != 0, "CreateEvent failed\n");
1629     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1630     ok(alarmThread !=0 , "CreateThread Failed\n");
1631
1632     ZeroMemory( &overlapped, sizeof(overlapped));
1633     overlapped.hEvent = hComPortEvent;
1634     before = GetTickCount();
1635     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1636     err = GetLastError();
1637     after = GetTickCount();
1638
1639     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1640     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1641     trace("overlapped WaitCommEvent returned.\n");
1642     if (!success && (err == ERROR_IO_PENDING))
1643         ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1644                      "wait hComPortEvent failed\n");
1645     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1646     err = GetLastError();
1647     after1 = GetTickCount();
1648     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1649           success, err, evtmask, after-before, after1-before);
1650
1651     ok(evtmask & EV_DSR, "Failed to detect  EV_DSR: 0x%08x, expected 0x%08x\n",
1652                  evtmask, EV_DSR);
1653     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1654     if(defaultStat & MS_DSR_ON)
1655         ok((evtmask & MS_DSR_ON) == 0,"DTR didn't change state!\n");
1656     else
1657         ok((evtmask & MS_DSR_ON), "DTR didn't change state!\n");
1658
1659     diff = after1 - before;
1660     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1661                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1662
1663     /*restore RTS Settings*/
1664     if(defaultStat & MS_DSR_ON)
1665         args[1] = SETDTR;
1666     else
1667         args[1] = CLRDTR;
1668
1669     CloseHandle(hcom);
1670 }
1671
1672 /*
1673  * Wait for a Ring
1674  * Needs Loopback from DTR to RING
1675  */
1676 static void test_WaitRing(void)
1677 {
1678     DCB dcb;
1679     OVERLAPPED overlapped;
1680     HANDLE hcom, hComPortEvent, alarmThread;
1681     DWORD_PTR args[3];
1682     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat;
1683     BOOL ret;
1684
1685     if (!loopback_dtr_ring) return;
1686
1687     hcom = test_OpenComm(TRUE);
1688     if (hcom == INVALID_HANDLE_VALUE) return;
1689
1690     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1691     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1692     {
1693         trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1694         CloseHandle(hcom);
1695         return;
1696     }
1697     args[0]= TIMEOUT >>1;
1698     ok((ret = GetCommModemStatus(hcom, &defaultStat)), "GetCommModemStatus failed\n");
1699     if (!ret) {
1700         skip("modem status failed -> skip.\n");
1701         CloseHandle(hcom);
1702         return;
1703     }
1704     if(defaultStat & MS_RING_ON)
1705         args[1] = CLRDTR;
1706     else
1707         args[1] = SETDTR;
1708     args[2]=(DWORD_PTR) hcom;
1709
1710     trace("test_WaitRing timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1711
1712     ok(SetCommMask(hcom, EV_RING), "SetCommMask failed\n");
1713     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1714     ok(hComPortEvent != 0, "CreateEvent failed\n");
1715     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1716     ok(alarmThread !=0 , "CreateThread Failed\n");
1717
1718     ZeroMemory( &overlapped, sizeof(overlapped));
1719     overlapped.hEvent = hComPortEvent;
1720     before = GetTickCount();
1721     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1722     err = GetLastError();
1723     after = GetTickCount();
1724
1725     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1726     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1727     trace("overlapped WaitCommEvent returned.\n");
1728     if (!success && (err == ERROR_IO_PENDING))
1729         ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1730                      "wait hComPortEvent failed\n");
1731     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1732     err = GetLastError();
1733     after1 = GetTickCount();
1734     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1735           success, err, evtmask, after-before, after1-before);
1736
1737     ok(evtmask & EV_RING, "Failed to detect  EV_RING: 0x%08x, expected 0x%08x\n",
1738        evtmask, EV_RING);
1739     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1740     if(defaultStat & MS_RING_ON)
1741         ok((evtmask & MS_RING_ON) == 0,"DTR didn't change state!\n");
1742     else
1743         ok((evtmask & MS_RING_ON), "DTR didn't change state!\n");
1744
1745     diff = after1 - before;
1746     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1747                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1748
1749     /*restore RTS Settings*/
1750     if(defaultStat & MS_RING_ON)
1751         args[1] = SETDTR;
1752     else
1753         args[1] = CLRDTR;
1754
1755     CloseHandle(hcom);
1756 }
1757 /*
1758  * Wait for a change in DCD
1759  * Needs Loopback from DTR to DCD
1760  */
1761 static void test_WaitDcd(void)
1762 {
1763     DCB dcb;
1764     OVERLAPPED overlapped;
1765     HANDLE hcom, hComPortEvent, alarmThread;
1766     DWORD_PTR args[3];
1767     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat = 0;
1768
1769     if (!loopback_dtr_dcd) return;
1770
1771     hcom = test_OpenComm(TRUE);
1772     if (hcom == INVALID_HANDLE_VALUE) return;
1773
1774     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1775     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1776     {
1777         trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1778         CloseHandle(hcom);
1779         return;
1780     }
1781     args[0]= TIMEOUT >>1;
1782     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1783     if(defaultStat & MS_RLSD_ON)
1784         args[1] = CLRDTR;
1785     else
1786         args[1] = SETDTR;
1787     args[2]= (DWORD_PTR)hcom;
1788
1789     trace("test_WaitDcd timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1790
1791     ok(SetCommMask(hcom, EV_RLSD), "SetCommMask failed\n");
1792     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1793     ok(hComPortEvent != 0, "CreateEvent failed\n");
1794     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1795     ok(alarmThread !=0 , "CreateThread Failed\n");
1796
1797     ZeroMemory( &overlapped, sizeof(overlapped));
1798     overlapped.hEvent = hComPortEvent;
1799     before = GetTickCount();
1800     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1801     err = GetLastError();
1802     after = GetTickCount();
1803
1804     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1805     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1806     trace("overlapped WaitCommEvent returned.\n");
1807     if (!success && (err == ERROR_IO_PENDING))
1808         ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1809                      "wait hComPortEvent failed\n");
1810     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1811     err = GetLastError();
1812     after1 = GetTickCount();
1813     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1814           success, err, evtmask, after-before, after1-before);
1815
1816     ok(evtmask & EV_RLSD, "Failed to detect  EV_RLSD: 0x%08x, expected 0x%08x\n",
1817                  evtmask, EV_RLSD);
1818     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1819     if(defaultStat & MS_RLSD_ON)
1820         ok((evtmask & MS_RLSD_ON) == 0,"DTR didn't change state!\n");
1821     else
1822         ok((evtmask & MS_RLSD_ON), "DTR didn't change state!\n");
1823
1824     diff = after1 - before;
1825     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1826                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1827
1828     /*restore RTS Settings*/
1829     if(defaultStat & MS_RLSD_ON)
1830         args[1] = SETDTR;
1831     else
1832         args[1] = CLRDTR;
1833
1834     CloseHandle(hcom);
1835 }
1836
1837 /*
1838    Set Break after timeout
1839 */
1840 static DWORD CALLBACK set_CommBreak(LPVOID arg)
1841 {
1842     DWORD_PTR *args = arg;
1843     DWORD timeout = args[0];
1844     HANDLE hcom   = (HANDLE) args[1];
1845
1846     trace("SetCommBreak for handle %p after timeout %d\n",
1847           hcom, timeout);
1848     Sleep(timeout);
1849     ok(SetCommBreak(hcom),"SetCommBreak %p failed\n", hcom);
1850     trace("SetCommBreak done\n");
1851     return 0;
1852 }
1853
1854 /*
1855    Wait for the Break condition (TX resp. RX active)
1856    Needs Loopback TX-RX
1857 */
1858 static void test_WaitBreak(void)
1859 {
1860     OVERLAPPED overlapped;
1861     HANDLE hcom, hComPortEvent, alarmThread;
1862     DWORD_PTR args[2];
1863     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0;
1864
1865     if (!loopback_txd_rxd) return;
1866
1867     hcom = test_OpenComm(TRUE);
1868     if (hcom == INVALID_HANDLE_VALUE) return;
1869
1870     ok(SetCommMask(hcom, EV_BREAK), "SetCommMask failed\n");
1871     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1872     ok(hComPortEvent != 0, "CreateEvent failed\n");
1873
1874     trace("test_WaitBreak\n");
1875     args[0]= TIMEOUT >>1;
1876     args[1]= (DWORD_PTR)hcom;
1877     alarmThread = CreateThread(NULL, 0, set_CommBreak, args, 0, &alarmThreadId);
1878     /* Wait a minimum to let the thread start up */
1879     Sleep(10);
1880     trace("Thread created\n");
1881     ok(alarmThread !=0 , "CreateThread Failed\n");
1882
1883     ZeroMemory( &overlapped, sizeof(overlapped));
1884     overlapped.hEvent = hComPortEvent;
1885     before = GetTickCount();
1886     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1887     err = GetLastError();
1888     after = GetTickCount();
1889
1890     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1891     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1892     trace("overlapped WaitCommEvent returned.\n");
1893
1894     if (!success && (err == ERROR_IO_PENDING))
1895     {
1896         success = WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE);
1897         ok(!success, "wait hComPortEvent res %d\n", GetLastError());
1898     }
1899     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1900     err = GetLastError();
1901     after1 = GetTickCount();
1902     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1903           success, err, evtmask, after-before, after1-before);
1904
1905     ok(evtmask & EV_BREAK, "Failed to detect  EV_BREAK: 0x%08x, expected 0x%08x\n",
1906        evtmask, EV_BREAK);
1907     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1908
1909     diff = after1 - before;
1910     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1911         "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1912
1913     ok(ClearCommBreak(hcom), "ClearCommBreak failed\n");
1914
1915     CloseHandle(hcom);
1916 }
1917
1918 static void test_stdio(void)
1919 {
1920     DCB dcb;
1921
1922     /* cygwin tries this to determine the stdin handle type */
1923     ok( !GetCommState( GetStdHandle(STD_INPUT_HANDLE), &dcb ), "GetCommState succeeded on stdin\n" );
1924     ok( GetLastError() == ERROR_INVALID_HANDLE || GetLastError() == ERROR_INVALID_FUNCTION,
1925         "got error %u\n", GetLastError() );
1926 }
1927
1928 static void test_WaitCommEvent(void)
1929 {
1930     HANDLE hcom;
1931     DWORD evtmask, ret, bytes, before, after, last_event_time;
1932     OVERLAPPED ovl_wait;
1933
1934     hcom = test_OpenComm(TRUE);
1935     if (hcom == INVALID_HANDLE_VALUE) return;
1936
1937     test_GetModemStatus(hcom);
1938
1939     ret = SetCommMask(hcom, 0x1fff);
1940     ok(ret, "SetCommMask error %d\n", GetLastError());
1941
1942     S(U(ovl_wait)).Offset = 0;
1943     S(U(ovl_wait)).OffsetHigh = 0;
1944     ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
1945
1946     trace("waiting 10 secs for com port events (turn on/off the device)...\n");
1947     last_event_time = 0;
1948     before = GetTickCount();
1949     do
1950     {
1951         evtmask = 0;
1952         SetLastError(0xdeadbeef);
1953         ret = WaitCommEvent(hcom, &evtmask, &ovl_wait);
1954         ok(!ret && GetLastError() == ERROR_IO_PENDING, "WaitCommEvent returned %d, error %d\n", ret, GetLastError());
1955         if (GetLastError() != ERROR_IO_PENDING) goto done; /* no point in further testing */
1956         for (;;)
1957         {
1958             ret = WaitForSingleObject(ovl_wait.hEvent, 500);
1959             after = GetTickCount();
1960             if (ret == WAIT_OBJECT_0)
1961             {
1962                 last_event_time = after;
1963                 ret = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
1964                 ok(ret, "GetOverlappedResult reported error %d\n", GetLastError());
1965                 ok(bytes == sizeof(evtmask), "expected %u, written %u\n", (UINT)sizeof(evtmask), bytes);
1966                 trace("WaitCommEvent: got events %#x\n", evtmask);
1967                 test_GetModemStatus(hcom);
1968                 break;
1969             }
1970             else
1971             {
1972                 if (last_event_time || after - before >= 10000) goto done;
1973             }
1974         }
1975     } while (after - before < 10000);
1976
1977 done:
1978     CloseHandle(ovl_wait.hEvent);
1979     CloseHandle(hcom);
1980 }
1981
1982 static void test_FlushFileBuffers(void)
1983 {
1984     HANDLE hcom;
1985     DWORD  ret, bytes, errors;
1986     COMSTAT stat;
1987
1988     hcom = test_OpenComm(FALSE);
1989     if (hcom == INVALID_HANDLE_VALUE) return;
1990
1991     ret = WriteFile(hcom, "\0\0\0\0\0\0\0", 7, &bytes, NULL);
1992     ok(ret, "WriteFile error %d\n", GetLastError());
1993     ok(bytes == 7, "expected 7, got %u\n", bytes);
1994
1995     ret = FlushFileBuffers(hcom);
1996     ok(ret, "FlushFileBuffers error %d\n", GetLastError());
1997
1998     ret = ClearCommError(hcom, &errors, &stat);
1999     ok(ret, "ClearCommError error %d\n", GetLastError());
2000     ok(stat.cbInQue == 0, "expected 0, got %d bytes in InQueue\n", stat.cbInQue);
2001     ok(stat.cbOutQue == 0, "expected 0, got %d bytes in OutQueue\n", stat.cbOutQue);
2002     ok(errors == 0, "expected errors 0, got %#x\n", errors);
2003
2004     CloseHandle(hcom);
2005 }
2006
2007 static void test_read_write(void)
2008 {
2009     static const char atz[]="ATZ\r\n";
2010     char buf[256];
2011     HANDLE hcom;
2012     DCB dcb;
2013     COMMTIMEOUTS timeouts;
2014     DWORD ret, bytes, status, evtmask, before, after, last_event_time;
2015     OVERLAPPED ovl_wait;
2016     IO_STATUS_BLOCK iob;
2017     LARGE_INTEGER offset;
2018     LONG i;
2019
2020     if (!pNtReadFile || !pNtWriteFile)
2021     {
2022         win_skip("not running on NT, skipping test\n");
2023         return;
2024     }
2025
2026     hcom = test_OpenComm(TRUE);
2027     if (hcom == INVALID_HANDLE_VALUE) return;
2028
2029     ret = GetCommState(hcom, &dcb);
2030     ok(ret, "GetCommState error %d\n", GetLastError());
2031     dcb.BaudRate = 9600;
2032     dcb.ByteSize = 8;
2033     dcb.Parity = NOPARITY;
2034     dcb.fRtsControl = RTS_CONTROL_ENABLE;
2035     dcb.fDtrControl = DTR_CONTROL_ENABLE;
2036     dcb.StopBits = ONESTOPBIT;
2037     ret = SetCommState(hcom, &dcb);
2038     ok(ret, "SetCommState error %d\n", GetLastError());
2039
2040     memset(&timeouts, 0, sizeof(timeouts));
2041     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
2042     ret = SetCommTimeouts(hcom, &timeouts);
2043     ok(ret,"SetCommTimeouts error %d\n", GetLastError());
2044
2045     ret = SetupComm(hcom, 1024, 1024);
2046     ok(ret, "SetUpComm error %d\n", GetLastError());
2047
2048     bytes = 0xdeadbeef;
2049     SetLastError(0xdeadbeef);
2050     ret = WriteFile(hcom, atz, 0, &bytes, NULL);
2051     ok(!ret, "WriteFile should fail\n");
2052     ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
2053     ok(bytes == 0, "bytes %u\n", bytes);
2054
2055     U(iob).Status = -1;
2056     iob.Information = -1;
2057     status = pNtWriteFile(hcom, 0, NULL, NULL, &iob, atz, 0, NULL, NULL);
2058     ok(status == STATUS_INVALID_PARAMETER, "expected STATUS_INVALID_PARAMETER, got %#x\n", status);
2059     ok(U(iob).Status == -1, "expected -1, got %#x\n", U(iob).Status);
2060     ok(iob.Information == -1, "expected -1, got %ld\n", iob.Information);
2061
2062     for (i = -20; i < 20; i++)
2063     {
2064         U(iob).Status = -1;
2065         iob.Information = -1;
2066         offset.QuadPart = (LONGLONG)i;
2067         status = pNtWriteFile(hcom, 0, NULL, NULL, &iob, atz, 0, &offset, NULL);
2068         if (i >= 0 || i == -1)
2069         {
2070             ok(status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, status);
2071             ok(U(iob).Status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, U(iob).Status);
2072             ok(iob.Information == 0, "%d: expected 0, got %lu\n", i, iob.Information);
2073         }
2074         else
2075         {
2076             ok(status == STATUS_INVALID_PARAMETER, "%d: expected STATUS_INVALID_PARAMETER, got %#x\n", i, status);
2077             ok(U(iob).Status == -1, "%d: expected -1, got %#x\n", i, U(iob).Status);
2078             ok(iob.Information == -1, "%d: expected -1, got %ld\n", i, iob.Information);
2079         }
2080     }
2081
2082     U(iob).Status = -1;
2083     iob.Information = -1;
2084     offset.QuadPart = 0;
2085     status = pNtWriteFile(hcom, 0, NULL, NULL, &iob, atz, sizeof(atz), &offset, NULL);
2086     ok(status == STATUS_PENDING || status == STATUS_SUCCESS, "expected STATUS_PENDING or STATUS_SUCCESS, got %#x\n", status);
2087     /* Under Windows checking IO_STATUS_BLOCK right after the call leads
2088      * to races, iob.Status is either -1 or STATUS_SUCCESS, which means
2089      * that it's set only when the operation completes.
2090      */
2091     ret = WaitForSingleObject(hcom, TIMEOUT);
2092     if (ret == WAIT_TIMEOUT)
2093     {
2094         skip("Probably modem is not connected.\n");
2095         CloseHandle(hcom);
2096         return;
2097     }
2098     ok(ret == WAIT_OBJECT_0, "WaitForSingleObject error %d\n", ret);
2099     ok(U(iob).Status == STATUS_SUCCESS, "expected STATUS_SUCCESS, got %#x\n", U(iob).Status);
2100     ok(iob.Information == sizeof(atz), "expected sizeof(atz), got %lu\n", iob.Information);
2101
2102     ret = SetCommMask(hcom, EV_RXCHAR);
2103     ok(ret, "SetCommMask error %d\n", GetLastError());
2104
2105     S(U(ovl_wait)).Offset = 0;
2106     S(U(ovl_wait)).OffsetHigh = 0;
2107     ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
2108
2109     trace("waiting 3 secs for modem response...\n");
2110     last_event_time = 0;
2111     before = GetTickCount();
2112     do
2113     {
2114         evtmask = 0;
2115         SetLastError(0xdeadbeef);
2116         ret = WaitCommEvent(hcom, &evtmask, &ovl_wait);
2117         ok(!ret && GetLastError() == ERROR_IO_PENDING, "WaitCommEvent returned %d, error %d\n", ret, GetLastError());
2118         if (GetLastError() != ERROR_IO_PENDING) goto done; /* no point in further testing */
2119         for (;;)
2120         {
2121             ret = WaitForSingleObject(ovl_wait.hEvent, 100);
2122             after = GetTickCount();
2123             if (ret == WAIT_OBJECT_0)
2124             {
2125                 trace("got modem response.\n");
2126
2127                 last_event_time = after;
2128                 ret = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
2129                 ok(ret, "GetOverlappedResult reported error %d\n", GetLastError());
2130                 ok(bytes == sizeof(evtmask), "expected sizeof(evtmask), got %u\n", bytes);
2131                 ok(evtmask & EV_RXCHAR, "EV_RXCHAR should be set\n");
2132
2133                 bytes = 0xdeadbeef;
2134                 SetLastError(0xdeadbeef);
2135                 ret = ReadFile(hcom, buf, 0, &bytes, NULL);
2136                 ok(!ret, "ReadFile should fail\n");
2137                 ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
2138                 ok(bytes == 0, "bytes %u\n", bytes);
2139
2140                 U(iob).Status = -1;
2141                 iob.Information = -1;
2142                 status = pNtReadFile(hcom, 0, NULL, NULL, &iob, buf, 0, NULL, NULL);
2143                 ok(status == STATUS_INVALID_PARAMETER, "expected STATUS_INVALID_PARAMETER, got %#x\n", status);
2144                 ok(U(iob).Status == -1, "expected -1, got %#x\n", U(iob).Status);
2145                 ok(iob.Information == -1, "expected -1, got %ld\n", iob.Information);
2146
2147                 for (i = -20; i < 20; i++)
2148                 {
2149                     U(iob).Status = -1;
2150                     iob.Information = -1;
2151                     offset.QuadPart = (LONGLONG)i;
2152                     status = pNtReadFile(hcom, 0, NULL, NULL, &iob, buf, 0, &offset, NULL);
2153                     /* FIXME: Remove once Wine is fixed */
2154                     if (status == STATUS_PENDING) WaitForSingleObject(hcom, TIMEOUT);
2155                     if (i >= 0)
2156                     {
2157 todo_wine
2158                         ok(status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, status);
2159 todo_wine
2160                         ok(U(iob).Status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, U(iob).Status);
2161                         ok(iob.Information == 0, "%d: expected 0, got %lu\n", i, iob.Information);
2162                     }
2163                     else
2164                     {
2165                         ok(status == STATUS_INVALID_PARAMETER, "%d: expected STATUS_INVALID_PARAMETER, got %#x\n", i, status);
2166                         ok(U(iob).Status == -1, "%d: expected -1, got %#x\n", i, U(iob).Status);
2167                         ok(iob.Information == -1, "%d: expected -1, got %ld\n", i, iob.Information);
2168                     }
2169                 }
2170
2171                 U(iob).Status = -1;
2172                 iob.Information = -1;
2173                 offset.QuadPart = 0;
2174                 status = pNtReadFile(hcom, 0, NULL, NULL, &iob, buf, 1, &offset, NULL);
2175                 ok(status == STATUS_SUCCESS, "expected STATUS_SUCCESS, got %#x\n", status);
2176                 ok(U(iob).Status == STATUS_SUCCESS, "expected STATUS_SUCCESS, got %#x\n", U(iob).Status);
2177                 ok(iob.Information == 1, "expected 1, got %lu\n", iob.Information);
2178                 goto done;
2179             }
2180             else
2181             {
2182                 if (last_event_time || after - before >= 3000) goto done;
2183             }
2184         }
2185     } while (after - before < 3000);
2186
2187 done:
2188     CloseHandle(ovl_wait.hEvent);
2189     CloseHandle(hcom);
2190 }
2191
2192 START_TEST(comm)
2193 {
2194     HMODULE ntdll = GetModuleHandleA("ntdll.dll");
2195     if (ntdll)
2196     {
2197         pNtReadFile = (void *)GetProcAddress(ntdll, "NtReadFile");
2198         pNtWriteFile = (void *)GetProcAddress(ntdll, "NtWriteFile");
2199     }
2200
2201     test_ClearCommError(); /* keep it the very first test */
2202     test_FlushFileBuffers();
2203     test_BuildCommDCB();
2204     test_ReadTimeOut();
2205     test_waittxempty();
2206     test_non_pending_errors();
2207     test_LoopbackRead();
2208     test_LoopbackCtsRts();
2209     test_LoopbackDtrDsr();
2210     test_LoopbackDtrRing();
2211     test_LoopbackDtrDcd();
2212     test_WaitRx();
2213     test_WaitCts();
2214     test_AbortWaitCts();
2215     test_WaitDsr();
2216     test_WaitRing();
2217     test_WaitDcd();
2218     test_WaitBreak();
2219     test_stdio();
2220     test_read_write();
2221
2222     if (!winetest_interactive)
2223     {
2224         skip("interactive tests (set WINETEST_INTERACTIVE=1)\n");
2225         return;
2226     }
2227
2228     test_WaitCommEvent();
2229 }