printing/printing_context_win_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <ocidl.h>
   6 #include <commdlg.h>
   7
   8 #include <string>
   9
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "printing/backend/printing_info_win.h"
  14 #include "printing/printing_test.h"
  15 #include "printing/printing_context.h"
  16 #include "printing/printing_context_win.h"
  17 #include "printing/print_settings.h"
  18 #include "testing/gtest/include/gtest/gtest.h"
  19
  20 // This test is automatically disabled if no printer is available.
  21 class PrintingContextTest : public PrintingTest<testing::Test> {
  22  public:
  23   void PrintSettingsCallback(printing::PrintingContext::Result result) {
  24     result_ = result;
  25   }
  26
  27  protected:
  28   printing::PrintingContext::Result result() const { return result_; }
  29
  30  private:
  31   printing::PrintingContext::Result result_;
  32 };
  33
  34 // This is a fake PrintDlgEx implementation that sets the right fields in
  35 // |lppd| to trigger a bug in older revisions of PrintingContext.
  36 HRESULT WINAPI PrintDlgExMock(LPPRINTDLGEX lppd) {
  37   // The interesting bits:
  38   // Pretend the user hit print
  39   lppd->dwResultAction = PD_RESULT_PRINT;
  40
  41   // Pretend the page range is 1-5, but since lppd->Flags does not have
  42   // PD_SELECTION set, this really shouldn't matter.
  43   lppd->nPageRanges = 1;
  44   lppd->lpPageRanges[0].nFromPage = 1;
  45   lppd->lpPageRanges[0].nToPage = 5;
  46
  47   // Painful paperwork.
  48   std::wstring printer_name = PrintingContextTest::GetDefaultPrinter();
  49   HANDLE printer;
  50   if (!OpenPrinter(const_cast<wchar_t*>(printer_name.c_str()), &printer, NULL))
  51     return E_FAIL;
  52
  53   scoped_array<uint8> buffer;
  54   const DEVMODE* dev_mode = NULL;
  55   HRESULT result = S_OK;
  56   lppd->hDC = NULL;
  57   lppd->hDevMode = NULL;
  58   lppd->hDevNames = NULL;
  59
  60   printing::PrinterInfo2 info_2;
  61   if (info_2.Init(printer)) {
  62     dev_mode = info_2.get()->pDevMode;
  63   }
  64   if (!dev_mode) {
  65     result = E_FAIL;
  66     goto Cleanup;
  67   }
  68
  69   if (!printing::PrintingContextWin::AllocateContext(printer_name, dev_mode,
  70       &lppd->hDC)) {
  71     result = E_FAIL;
  72     goto Cleanup;
  73   }
  74
  75   size_t dev_mode_size = dev_mode->dmSize + dev_mode->dmDriverExtra;
  76   lppd->hDevMode = GlobalAlloc(GMEM_MOVEABLE, dev_mode_size);
  77   if (!lppd->hDevMode) {
  78     result = E_FAIL;
  79     goto Cleanup;
  80   }
  81   void* dev_mode_ptr = GlobalLock(lppd->hDevMode);
  82   if (!dev_mode_ptr) {
  83     result = E_FAIL;
  84     goto Cleanup;
  85   }
  86   memcpy(dev_mode_ptr, dev_mode, dev_mode_size);
  87   GlobalUnlock(lppd->hDevMode);
  88   dev_mode_ptr = NULL;
  89
  90   size_t driver_size = 2 + sizeof(wchar_t) * lstrlen(info_2.get()->pDriverName);
  91   size_t printer_size = 2 + sizeof(wchar_t) *
  92                             lstrlen(info_2.get()->pPrinterName);
  93   size_t port_size = 2 + sizeof(wchar_t) * lstrlen(info_2.get()->pPortName);
  94   size_t dev_names_size = sizeof(DEVNAMES) + driver_size + printer_size +
  95                           port_size;
  96   lppd->hDevNames = GlobalAlloc(GHND, dev_names_size);
  97   if (!lppd->hDevNames) {
  98     result = E_FAIL;
  99     goto Cleanup;
 100   }
 101   void* dev_names_ptr = GlobalLock(lppd->hDevNames);
 102   if (!dev_names_ptr) {
 103     result = E_FAIL;
 104     goto Cleanup;
 105   }
 106   DEVNAMES* dev_names = reinterpret_cast<DEVNAMES*>(dev_names_ptr);
 107   dev_names->wDefault = 1;
 108   dev_names->wDriverOffset = sizeof(DEVNAMES);
 109   memcpy(reinterpret_cast<uint8*>(dev_names_ptr) + dev_names->wDriverOffset,
 110          info_2.get()->pDriverName, driver_size);
 111   dev_names->wDeviceOffset = dev_names->wDriverOffset + driver_size;
 112   memcpy(reinterpret_cast<uint8*>(dev_names_ptr) + dev_names->wDeviceOffset,
 113          info_2.get()->pPrinterName, printer_size);
 114   dev_names->wOutputOffset = dev_names->wDeviceOffset + printer_size;
 115   memcpy(reinterpret_cast<uint8*>(dev_names_ptr) + dev_names->wOutputOffset,
 116          info_2.get()->pPortName, port_size);
 117   GlobalUnlock(lppd->hDevNames);
 118   dev_names_ptr = NULL;
 119
 120 Cleanup:
 121   // Note: This section does proper deallocation/free of DC/global handles.  We
 122   //       did not use ScopedHGlobal or ScopedHandle because they did not
 123   //       perform what we need.  Goto's are used based on Windows programming
 124   //       idiom, to avoid deeply nested if's, and try-catch-finally is not
 125   //       allowed in Chromium.
 126   if (FAILED(result)) {
 127     if (lppd->hDC) {
 128       DeleteDC(lppd->hDC);
 129     }
 130     if (lppd->hDevMode) {
 131       GlobalFree(lppd->hDevMode);
 132     }
 133     if (lppd->hDevNames) {
 134       GlobalFree(lppd->hDevNames);
 135     }
 136   }
 137   ClosePrinter(printer);
 138   return result;
 139 }
 140
 141 TEST_F(PrintingContextTest, Base) {
 142   // Sometimes ::GetDefaultPrinter() fails? bug 61509.
 143   if (IsTestCaseDisabled())
 144     return;
 145
 146   printing::PrintSettings settings;
 147   settings.set_device_name(GetDefaultPrinter());
 148   // Initialize it.
 149   scoped_ptr<printing::PrintingContext> context(
 150       printing::PrintingContext::Create(std::string()));
 151   EXPECT_EQ(printing::PrintingContext::OK, context->InitWithSettings(settings));
 152
 153   // The print may lie to use and may not support world transformation.
 154   // Verify right now.
 155   XFORM random_matrix = { 1, 0.1f, 0, 1.5f, 0, 1 };
 156   EXPECT_TRUE(SetWorldTransform(context->context(), &random_matrix));
 157   EXPECT_TRUE(ModifyWorldTransform(context->context(), NULL, MWT_IDENTITY));
 158 }
 159
 160 TEST_F(PrintingContextTest, PrintAll) {
 161   // Sometimes ::GetDefaultPrinter() fails? bug 61509.
 162   if (IsTestCaseDisabled())
 163     return;
 164
 165   std::string dummy_locale;
 166   printing::PrintingContextWin context(dummy_locale);
 167   context.SetPrintDialog(&PrintDlgExMock);
 168   context.AskUserForSettings(
 169       NULL, 123, false, base::Bind(&PrintingContextTest::PrintSettingsCallback,
 170                                    base::Unretained(this)));
 171   EXPECT_EQ(printing::PrintingContext::OK, result());
 172   printing::PrintSettings settings = context.settings();
 173   EXPECT_EQ(settings.ranges.size(), 0);
 174 }