dlls/gdi32/tests/path.c

   1 /*
   2  * Unit test suite for paths
   3  *
   4  * Copyright 2007 Laurent Vromman
   5  * Copyright 2007 Misha Koshelev
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include <assert.h>
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28
  29 #include "wine/test.h"
  30
  31 #include "winuser.h"
  32 #include "winerror.h"
  33
  34 #define expect(expected, got) ok(got == expected, "Expected %.8x, got %.8x\n", expected, got)
  35
  36 static void test_widenpath(void)
  37 {
  38     HDC hdc = GetDC(0);
  39     HPEN greenPen, narrowPen;
  40     HPEN oldPen;
  41     POINT pnt[6];
  42     INT nSize, ret;
  43
  44     /* Create a pen to be used in WidenPath */
  45     greenPen = CreatePen(PS_SOLID, 10, RGB(0,0,0));
  46     oldPen = SelectObject(hdc, greenPen);
  47
  48     /* Prepare a path */
  49     pnt[0].x = 100;
  50     pnt[0].y = 0;
  51     pnt[1].x = 200;
  52     pnt[1].y = 0;
  53     pnt[2].x = 300;
  54     pnt[2].y = 100;
  55     pnt[3].x = 300;
  56     pnt[3].y = 200;
  57     pnt[4].x = 200;
  58     pnt[4].y = 300;
  59     pnt[5].x = 100;
  60     pnt[5].y = 300;
  61
  62     /* Set a polyline path */
  63     BeginPath(hdc);
  64     Polyline(hdc, pnt, 6);
  65     EndPath(hdc);
  66
  67     /* Widen the polyline path */
  68     ok(WidenPath(hdc), "WidenPath fails while widening a poyline path.\n");
  69
  70     /* Test if WidenPath seems to have done his job */
  71     nSize = GetPath(hdc, NULL, NULL, 0);
  72     ok(nSize != -1, "GetPath fails after calling WidenPath.\n");
  73     ok(nSize > 6, "Path number of points is too low. Should be more than 6 but is %d\n", nSize);
  74
  75     AbortPath(hdc);
  76
  77     /* Test WidenPath with an open path (last error only set on Win2k and later) */
  78     SetLastError(0xdeadbeef);
  79     BeginPath(hdc);
  80     ret = WidenPath(hdc);
  81     ok(ret == FALSE && (GetLastError() == ERROR_CAN_NOT_COMPLETE || GetLastError() == 0xdeadbeef),
  82        "WidenPath fails while widening an open path. Return value is %d, should be %d. Error is %u\n", ret, FALSE, GetLastError());
  83
  84     AbortPath(hdc);
  85
  86     /* Test when the pen width is equal to 1. The path should change too */
  87     narrowPen = CreatePen(PS_SOLID, 1, RGB(0,0,0));
  88     oldPen = SelectObject(hdc, narrowPen);
  89     BeginPath(hdc);
  90     Polyline(hdc, pnt, 6);
  91     EndPath(hdc);
  92     ret = WidenPath(hdc);
  93     nSize = GetPath(hdc, NULL, NULL, 0);
  94     ok(nSize > 6, "WidenPath should compute a widdened path with a 1px wide pen. Path length is %d, should be more than 6\n", nSize);
  95
  96     ReleaseDC(0, hdc);
  97     return;
  98 }
  99
 100 /*
 101  * Tests for GDI drawing functions in paths
 102  */
 103
 104 typedef struct
 105 {
 106     int x, y;
 107     BYTE type;
 108
 109     /* How many extra entries before this one only on wine
 110      * but not on native? */
 111     int wine_only_entries_preceding;
 112
 113     /* 0 - This entry matches on wine.
 114      * 1 - This entry corresponds to a single entry on wine that does not match the native entry.
 115      * 2 - This entry is currently skipped on wine but present on native. */
 116     int todo;
 117 } path_test_t;
 118
 119 /* Helper function to verify that the current path in the given DC matches the expected path.
 120  *
 121  * We use a "smart" matching algorithm that allows us to detect partial improvements
 122  * in conformance. Specifically, two running indices are kept, one through the actual
 123  * path and one through the expected path. The actual path index increases unless there is
 124  * no match and the todo field of the appropriate path_test_t element is 2. Similarly,
 125  * if the wine_entries_preceding field of the appropriate path_test_t element is non-zero,
 126  * the expected path index does not increase for that many elements as long as there
 127  * is no match. This allows us to todo_wine extra path elements that are present only
 128  * on wine but not on native and vice versa.
 129  *
 130  * Note that if expected_size is zero and the WINETEST_DEBUG environment variable is
 131  * greater than 2, the trace() output is a C path_test_t array structure, useful for making
 132  * new tests that use this function.
 133  */
 134 static void ok_path(HDC hdc, const char *path_name, const path_test_t *expected, int expected_size, BOOL todo_size)
 135 {
 136     static const char *type_string[8] = { "Unknown (0)", "PT_CLOSEFIGURE", "PT_LINETO",
 137                                           "PT_LINETO | PT_CLOSEFIGURE", "PT_BEZIERTO",
 138                                           "PT_BEZIERTO | PT_CLOSEFIGURE", "PT_MOVETO", "PT_MOVETO | PT_CLOSEFIGURE"};
 139     POINT *pnt = NULL;
 140     BYTE *types = NULL;
 141     int size, numskip,
 142         idx = 0, eidx = 0;
 143
 144     /* Get the path */
 145     assert(hdc != 0);
 146     size = GetPath(hdc, NULL, NULL, 0);
 147     ok(size > 0, "GetPath returned size %d, last error %d\n", size, GetLastError());
 148     if (size <= 0)
 149     {
 150         skip("Cannot perform path comparisons due to failure to retrieve path.\n");
 151         return;
 152     }
 153     pnt = HeapAlloc(GetProcessHeap(), 0, size*sizeof(POINT));
 154     assert(pnt != 0);
 155     types = HeapAlloc(GetProcessHeap(), 0, size*sizeof(BYTE));
 156     assert(types != 0);
 157     size = GetPath(hdc, pnt, types, size);
 158     assert(size > 0);
 159
 160     if (todo_size) todo_wine
 161         ok(size == expected_size, "Path size %d does not match expected size %d\n", size, expected_size);
 162     else
 163         ok(size == expected_size, "Path size %d does not match expected size %d\n", size, expected_size);
 164
 165     if (winetest_debug > 2)
 166         trace("static const path_test_t %s[] = {\n", path_name);
 167
 168     numskip = expected_size ? expected[eidx].wine_only_entries_preceding : 0;
 169     while (idx < size && eidx < expected_size)
 170     {
 171         /* We allow a few pixels fudge in matching X and Y coordinates to account for imprecision in
 172          * floating point to integer conversion */
 173         BOOL match = (types[idx] == expected[eidx].type) &&
 174             (pnt[idx].x >= expected[eidx].x-2 && pnt[idx].x <= expected[eidx].x+2) &&
 175             (pnt[idx].y >= expected[eidx].y-2 && pnt[idx].y <= expected[eidx].y+2);
 176
 177         if (expected[eidx].todo || numskip) todo_wine
 178             ok(match, "Expected #%d: %s (%d,%d) but got %s (%d,%d)\n", eidx,
 179                type_string[expected[eidx].type], expected[eidx].x, expected[eidx].y,
 180                type_string[types[idx]], pnt[idx].x, pnt[idx].y);
 181         else
 182             ok(match, "Expected #%d: %s (%d,%d) but got %s (%d,%d)\n", eidx,
 183                type_string[expected[eidx].type], expected[eidx].x, expected[eidx].y,
 184                type_string[types[idx]], pnt[idx].x, pnt[idx].y);
 185
 186         if (match || expected[eidx].todo != 2)
 187         {
 188             if (winetest_debug > 2)
 189                 trace("    {%d, %d, %s, 0, 0}%s /* %d */\n", pnt[idx].x, pnt[idx].y,
 190                       type_string[types[idx]], idx < size-1 ? "," : "};", idx);
 191             idx++;
 192         }
 193         if (match || !numskip--)
 194             numskip = expected[++eidx].wine_only_entries_preceding;
 195     }
 196
 197     /* If we are debugging and the actual path is longer than the expected path, make
 198      * sure to display the entire path */
 199     if (winetest_debug > 2 && idx < size)
 200         for (; idx < size; idx++)
 201             trace("    {%d, %d, %s, 0, 0}%s /* %d */\n", pnt[idx].x, pnt[idx].y,
 202                   type_string[types[idx]], idx < size-1 ? "," : "};", idx);
 203
 204     HeapFree(GetProcessHeap(), 0, types);
 205     HeapFree(GetProcessHeap(), 0, pnt);
 206 }
 207
 208 static const path_test_t arcto_path[] = {
 209     {0, 0, PT_MOVETO, 0, 0}, /* 0 */
 210     {229, 215, PT_LINETO, 0, 0}, /* 1 */
 211     {248, 205, PT_BEZIERTO, 0, 0}, /* 2 */
 212     {273, 200, PT_BEZIERTO, 0, 0}, /* 3 */
 213     {300, 200, PT_BEZIERTO, 0, 0}, /* 4 */
 214     {355, 200, PT_BEZIERTO, 0, 0}, /* 5 */
 215     {399, 222, PT_BEZIERTO, 0, 0}, /* 6 */
 216     {399, 250, PT_BEZIERTO, 0, 0}, /* 7 */
 217     {399, 263, PT_BEZIERTO, 0, 0}, /* 8 */
 218     {389, 275, PT_BEZIERTO, 0, 0}, /* 9 */
 219     {370, 285, PT_BEZIERTO, 0, 0}, /* 10 */
 220     {363, 277, PT_LINETO, 0, 0}, /* 11 */
 221     {380, 270, PT_BEZIERTO, 0, 0}, /* 12 */
 222     {389, 260, PT_BEZIERTO, 0, 0}, /* 13 */
 223     {389, 250, PT_BEZIERTO, 0, 0}, /* 14 */
 224     {389, 228, PT_BEZIERTO, 0, 0}, /* 15 */
 225     {349, 210, PT_BEZIERTO, 0, 0}, /* 16 */
 226     {300, 210, PT_BEZIERTO, 0, 0}, /* 17 */
 227     {276, 210, PT_BEZIERTO, 0, 0}, /* 18 */
 228     {253, 214, PT_BEZIERTO, 0, 0}, /* 19 */
 229     {236, 222, PT_BEZIERTO | PT_CLOSEFIGURE, 0, 0}}; /* 20 */
 230
 231 static void test_arcto(void)
 232 {
 233     HDC hdc = GetDC(0);
 234
 235     BeginPath(hdc);
 236     SetArcDirection(hdc, AD_CLOCKWISE);
 237     if (!ArcTo(hdc, 200, 200, 400, 300, 200, 200, 400, 300) &&
 238         GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
 239     {
 240         /* ArcTo is only available on Win2k and later */
 241         win_skip("ArcTo is not available\n");
 242         goto done;
 243     }
 244     SetArcDirection(hdc, AD_COUNTERCLOCKWISE);
 245     ArcTo(hdc, 210, 210, 390, 290, 390, 290, 210, 210);
 246     CloseFigure(hdc);
 247     EndPath(hdc);
 248
 249     ok_path(hdc, "arcto_path", arcto_path, sizeof(arcto_path)/sizeof(path_test_t), 0);
 250 done:
 251     ReleaseDC(0, hdc);
 252 }
 253
 254 static const path_test_t anglearc_path[] = {
 255     {0, 0, PT_MOVETO, 0, 0}, /* 0 */
 256     {371, 229, PT_LINETO, 0, 0}, /* 1 */
 257     {352, 211, PT_BEZIERTO, 0, 0}, /* 2 */
 258     {327, 200, PT_BEZIERTO, 0, 0}, /* 3 */
 259     {300, 200, PT_BEZIERTO, 0, 0}, /* 4 */
 260     {245, 200, PT_BEZIERTO, 0, 0}, /* 5 */
 261     {200, 245, PT_BEZIERTO, 0, 0}, /* 6 */
 262     {200, 300, PT_BEZIERTO, 0, 0}, /* 7 */
 263     {200, 300, PT_BEZIERTO, 0, 2}, /* 8 */
 264     {200, 300, PT_BEZIERTO, 0, 2}, /* 9 */
 265     {200, 300, PT_BEZIERTO, 0, 2}, /* 10 */
 266     {231, 260, PT_LINETO, 0, 0}, /* 11 */
 267     {245, 235, PT_BEZIERTO, 0, 0}, /* 12 */
 268     {271, 220, PT_BEZIERTO, 0, 0}, /* 13 */
 269     {300, 220, PT_BEZIERTO, 0, 0}, /* 14 */
 270     {344, 220, PT_BEZIERTO, 0, 0}, /* 15 */
 271     {380, 256, PT_BEZIERTO, 0, 0}, /* 16 */
 272     {380, 300, PT_BEZIERTO, 0, 0}, /* 17 */
 273     {380, 314, PT_BEZIERTO, 0, 0}, /* 18 */
 274     {376, 328, PT_BEZIERTO, 0, 0}, /* 19 */
 275     {369, 340, PT_BEZIERTO | PT_CLOSEFIGURE, 0, 0}}; /* 20 */
 276
 277 static void test_anglearc(void)
 278 {
 279     HDC hdc = GetDC(0);
 280     BeginPath(hdc);
 281     if (!AngleArc(hdc, 300, 300, 100, 45.0, 135.0) &&
 282         GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
 283     {
 284         /* AngleArc is only available on Win2k and later */
 285         win_skip("AngleArc is not available\n");
 286         goto done;
 287     }
 288     AngleArc(hdc, 300, 300, 80, 150.0, -180.0);
 289     CloseFigure(hdc);
 290     EndPath(hdc);
 291
 292     ok_path(hdc, "anglearc_path", anglearc_path, sizeof(anglearc_path)/sizeof(path_test_t), 1);
 293 done:
 294     ReleaseDC(0, hdc);
 295 }
 296
 297 static const path_test_t polydraw_path[] = {
 298     {0, 0, PT_MOVETO, 0, 0}, /*0*/
 299     {10, 10, PT_LINETO, 0, 0}, /*1*/
 300     {10, 15, PT_LINETO | PT_CLOSEFIGURE, 0, 0}, /*2*/
 301     {100, 100, PT_MOVETO, 0, 0}, /*3*/
 302     {95, 95, PT_LINETO, 0, 0}, /*4*/
 303     {10, 10, PT_LINETO, 0, 0}, /*5*/
 304     {10, 15, PT_LINETO | PT_CLOSEFIGURE, 0, 0}, /*6*/
 305     {100, 100, PT_MOVETO, 0, 0}, /*7*/
 306     {15, 15, PT_LINETO, 0, 0}, /*8*/
 307     {25, 25, PT_MOVETO, 0, 0}, /*9*/
 308     {25, 30, PT_LINETO, 0, 0}, /*10*/
 309     {100, 100, PT_MOVETO, 0, 0}, /*11*/
 310     {30, 30, PT_BEZIERTO, 0, 0}, /*12*/
 311     {30, 35, PT_BEZIERTO, 0, 0}, /*13*/
 312     {35, 35, PT_BEZIERTO, 0, 0}, /*14*/
 313     {35, 40, PT_LINETO, 0, 0}, /*15*/
 314     {40, 40, PT_MOVETO, 0, 0}, /*16*/
 315     {40, 45, PT_LINETO, 0, 0}, /*17*/
 316     {35, 40, PT_MOVETO, 0, 0}, /*18*/
 317     {45, 50, PT_LINETO, 0, 0}, /*19*/
 318     {35, 40, PT_MOVETO, 0, 0}, /*20*/
 319     {50, 55, PT_LINETO, 0, 0}, /*21*/
 320     {45, 50, PT_LINETO, 0, 0}, /*22*/
 321     {35, 40, PT_MOVETO, 0, 0}, /*23*/
 322     {60, 60, PT_LINETO, 0, 0}, /*24*/
 323     {60, 65, PT_MOVETO, 0, 0}, /*25*/
 324     {65, 65, PT_LINETO, 0, 0} /*26*/
 325     };
 326
 327 static POINT polydraw_pts[] = {
 328     {10, 10}, {10, 15},
 329     {15, 15}, {15, 20}, {20, 20}, {20, 25},
 330     {25, 25}, {25, 30},
 331     {30, 30}, {30, 35}, {35, 35}, {35, 40},
 332     {40, 40}, {40, 45}, {45, 45},
 333     {45, 50}, {50, 50},
 334     {50, 55}, {45, 50}, {55, 60},
 335     {60, 60}, {60, 65}, {65, 65}};
 336
 337 static BYTE polydraw_tps[] =
 338     {PT_LINETO, PT_CLOSEFIGURE | PT_LINETO, /* 2 */
 339      PT_LINETO, PT_BEZIERTO, PT_LINETO, PT_LINETO, /* 6 */
 340      PT_MOVETO, PT_LINETO, /* 8 */
 341      PT_BEZIERTO, PT_BEZIERTO, PT_BEZIERTO, PT_LINETO, /* 12 */
 342      PT_MOVETO, PT_LINETO, PT_CLOSEFIGURE, /* 15 */
 343      PT_LINETO, PT_MOVETO | PT_CLOSEFIGURE, /* 17 */
 344      PT_LINETO, PT_LINETO, PT_MOVETO | PT_CLOSEFIGURE, /* 20 */
 345      PT_LINETO, PT_MOVETO | PT_LINETO, PT_LINETO}; /* 23 */
 346
 347 static void test_polydraw(void)
 348 {
 349     BOOL retb;
 350     HDC hdc = GetDC(0);
 351     BeginPath(hdc);
 352
 353     /* closefigure with no previous moveto */
 354     if (!(retb = PolyDraw(hdc, polydraw_pts, polydraw_tps, 2)) &&
 355         GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
 356     {
 357         /* PolyDraw is only available on Win2k and later */
 358         win_skip("PolyDraw is not available\n");
 359         goto done;
 360     }
 361     expect(TRUE, retb);
 362
 363     MoveToEx(hdc, 100, 100, NULL);
 364     LineTo(hdc, 95, 95);
 365     /* closefigure with previous moveto */
 366     retb = PolyDraw(hdc, polydraw_pts, polydraw_tps, 2);
 367     expect(TRUE, retb);
 368     /* bad bezier points */
 369     retb = PolyDraw(hdc, &(polydraw_pts[2]), &(polydraw_tps[2]), 4);
 370     expect(FALSE, retb);
 371     retb = PolyDraw(hdc, &(polydraw_pts[6]), &(polydraw_tps[6]), 4);
 372     expect(FALSE, retb);
 373     /* good bezier points */
 374     retb = PolyDraw(hdc, &(polydraw_pts[8]), &(polydraw_tps[8]), 4);
 375     expect(TRUE, retb);
 376     /* does lineto or bezierto take precedence? */
 377     retb = PolyDraw(hdc, &(polydraw_pts[12]), &(polydraw_tps[12]), 4);
 378     expect(FALSE, retb);
 379     /* bad point type, has already moved cursor position */
 380     retb = PolyDraw(hdc, &(polydraw_pts[15]), &(polydraw_tps[15]), 4);
 381     expect(FALSE, retb);
 382     /* bad point type, cursor position is moved, but back to its original spot */
 383     retb = PolyDraw(hdc, &(polydraw_pts[17]), &(polydraw_tps[17]), 4);
 384     expect(FALSE, retb);
 385     /* does lineto or moveto take precedence? */
 386     retb = PolyDraw(hdc, &(polydraw_pts[20]), &(polydraw_tps[20]), 3);
 387     expect(TRUE, retb);
 388
 389     EndPath(hdc);
 390     ok_path(hdc, "polydraw_path", polydraw_path, sizeof(polydraw_path)/sizeof(path_test_t), 0);
 391 done:
 392     ReleaseDC(0, hdc);
 393 }
 394
 395 static void test_closefigure(void) {
 396     BOOL retb;
 397     int nSize, nSizeWitness;
 398     HDC hdc = GetDC(0);
 399
 400     BeginPath(hdc);
 401     MoveToEx(hdc, 95, 95, NULL);
 402     LineTo(hdc, 95,  0);
 403     LineTo(hdc,  0, 95);
 404
 405     retb = CloseFigure(hdc);
 406     EndPath(hdc);
 407     nSize = GetPath(hdc, NULL, NULL, 0);
 408
 409     AbortPath(hdc);
 410
 411     BeginPath(hdc);
 412     MoveToEx(hdc, 95, 95, NULL);
 413     LineTo(hdc, 95,  0);
 414     LineTo(hdc,  0, 95);
 415
 416     EndPath(hdc);
 417     nSizeWitness = GetPath(hdc, NULL, NULL, 0);
 418
 419     /* This test shows CloseFigure does not have to add a point at the end of the path */
 420     ok(nSize == nSizeWitness, "Wrong number of points, no point should be added by CloseFigure\n");
 421
 422     ReleaseDC(0, hdc);
 423 }
 424
 425 static void WINAPI linedda_callback(INT x, INT y, LPARAM lparam)
 426 {
 427     POINT **pt = (POINT**)lparam;
 428     ok((*pt)->x == x && (*pt)->y == y, "point mismatch expect(%d,%d) got(%d,%d)\n",
 429        (*pt)->x, (*pt)->y, x, y);
 430
 431     (*pt)++;
 432     return;
 433 }
 434
 435 static void test_linedda(void)
 436 {
 437     const POINT *pt;
 438     static const POINT array_10_20_20_40[] = {{10,20},{10,21},{11,22},{11,23},
 439                                               {12,24},{12,25},{13,26},{13,27},
 440                                               {14,28},{14,29},{15,30},{15,31},
 441                                               {16,32},{16,33},{17,34},{17,35},
 442                                               {18,36},{18,37},{19,38},{19,39},
 443                                               {-1,-1}};
 444     static const POINT array_10_20_20_43[] = {{10,20},{10,21},{11,22},{11,23},
 445                                               {12,24},{12,25},{13,26},{13,27},
 446                                               {13,28},{14,29},{14,30},{15,31},
 447                                               {15,32},{16,33},{16,34},{17,35},
 448                                               {17,36},{17,37},{18,38},{18,39},
 449                                               {19,40},{19,41},{20,42},{-1,-1}};
 450
 451     static const POINT array_10_20_10_20[] = {{-1,-1}};
 452     static const POINT array_10_20_11_27[] = {{10,20},{10,21},{10,22},{10,23},
 453                                               {11,24},{11,25},{11,26},{-1,-1}};
 454
 455     static const POINT array_20_43_10_20[] = {{20,43},{20,42},{19,41},{19,40},
 456                                               {18,39},{18,38},{17,37},{17,36},
 457                                               {17,35},{16,34},{16,33},{15,32},
 458                                               {15,31},{14,30},{14,29},{13,28},
 459                                               {13,27},{13,26},{12,25},{12,24},
 460                                               {11,23},{11,22},{10,21},{-1,-1}};
 461
 462     static const POINT array_20_20_10_43[] = {{20,20},{20,21},{19,22},{19,23},
 463                                               {18,24},{18,25},{17,26},{17,27},
 464                                               {17,28},{16,29},{16,30},{15,31},
 465                                               {15,32},{14,33},{14,34},{13,35},
 466                                               {13,36},{13,37},{12,38},{12,39},
 467                                               {11,40},{11,41},{10,42},{-1,-1}};
 468
 469     static const POINT array_20_20_43_10[] = {{20,20},{21,20},{22,19},{23,19},
 470                                               {24,18},{25,18},{26,17},{27,17},
 471                                               {28,17},{29,16},{30,16},{31,15},
 472                                               {32,15},{33,14},{34,14},{35,13},
 473                                               {36,13},{37,13},{38,12},{39,12},
 474                                               {40,11},{41,11},{42,10},{-1,-1}};
 475
 476
 477     pt = array_10_20_20_40;
 478     LineDDA(10, 20, 20, 40, linedda_callback, (LPARAM)&pt);
 479     ok(pt->x == -1 && pt->y == -1, "didn't find terminator\n");
 480
 481     pt = array_10_20_20_43;
 482     LineDDA(10, 20, 20, 43, linedda_callback, (LPARAM)&pt);
 483     ok(pt->x == -1 && pt->y == -1, "didn't find terminator\n");
 484
 485     pt = array_10_20_10_20;
 486     LineDDA(10, 20, 10, 20, linedda_callback, (LPARAM)&pt);
 487     ok(pt->x == -1 && pt->y == -1, "didn't find terminator\n");
 488
 489     pt = array_10_20_11_27;
 490     LineDDA(10, 20, 11, 27, linedda_callback, (LPARAM)&pt);
 491     ok(pt->x == -1 && pt->y == -1, "didn't find terminator\n");
 492
 493     pt = array_20_43_10_20;
 494     LineDDA(20, 43, 10, 20, linedda_callback, (LPARAM)&pt);
 495     ok(pt->x == -1 && pt->y == -1, "didn't find terminator\n");
 496
 497     pt = array_20_20_10_43;
 498     LineDDA(20, 20, 10, 43, linedda_callback, (LPARAM)&pt);
 499     ok(pt->x == -1 && pt->y == -1, "didn't find terminator\n");
 500
 501     pt = array_20_20_43_10;
 502     LineDDA(20, 20, 43, 10, linedda_callback, (LPARAM)&pt);
 503     ok(pt->x == -1 && pt->y == -1, "didn't find terminator\n");
 504 }
 505
 506 START_TEST(path)
 507 {
 508     test_widenpath();
 509     test_arcto();
 510     test_anglearc();
 511     test_polydraw();
 512     test_closefigure();
 513     test_linedda();
 514 }