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 "base/run_loop.h"
  14 #include "printing/backend/printing_info_win.h"
  15 #include "printing/printing_test.h"
  16 #include "printing/printing_context.h"
  17 #include "printing/printing_context_win.h"
  18 #include "printing/print_settings.h"
  19 #include "testing/gtest/include/gtest/gtest.h"
  20
  21 // This test is automatically disabled if no printer is available.
  22 class PrintingContextTest : public PrintingTest<testing::Test> {
  23  public:
  24   void PrintSettingsCallback(printing::PrintingContext::Result result) {
  25     result_ = result;
  26     base::MessageLoop::current()->QuitWhenIdle();
  27   }
  28
  29  protected:
  30   printing::PrintingContext::Result result() const { return result_; }
  31
  32  private:
  33   printing::PrintingContext::Result result_;
  34 };
  35
  36 // This is a fake PrintDlgEx implementation that sets the right fields in
  37 // |lppd| to trigger a bug in older revisions of PrintingContext.
  38 HRESULT WINAPI PrintDlgExMock(LPPRINTDLGEX lppd) {
  39   // The interesting bits:
  40   // Pretend the user hit print
  41   lppd->dwResultAction = PD_RESULT_PRINT;
  42
  43   // Pretend the page range is 1-5, but since lppd->Flags does not have
  44   // PD_SELECTION set, this really shouldn't matter.
  45   lppd->nPageRanges = 1;
  46   lppd->lpPageRanges[0].nFromPage = 1;
  47   lppd->lpPageRanges[0].nToPage = 5;
  48
  49   // Painful paperwork.
  50   std::wstring printer_name = PrintingContextTest::GetDefaultPrinter();
  51   HANDLE printer;
  52   if (!OpenPrinter(const_cast<wchar_t*>(printer_name.c_str()), &printer, NULL))
  53     return E_FAIL;
  54
  55   scoped_ptr<uint8[]> buffer;
  56   const DEVMODE* dev_mode = NULL;
  57   HRESULT result = S_OK;
  58   lppd->hDC = NULL;
  59   lppd->hDevMode = NULL;
  60   lppd->hDevNames = NULL;
  61
  62   printing::PrinterInfo2 info_2;
  63   if (info_2.Init(printer)) {
  64     dev_mode = info_2.get()->pDevMode;
  65   }
  66   if (!dev_mode) {
  67     result = E_FAIL;
  68     goto Cleanup;
  69   }
  70
  71   if (!printing::PrintingContextWin::AllocateContext(printer_name, dev_mode,
  72       &lppd->hDC)) {
  73     result = E_FAIL;
  74     goto Cleanup;
  75   }
  76
  77   size_t dev_mode_size = dev_mode->dmSize + dev_mode->dmDriverExtra;
  78   lppd->hDevMode = GlobalAlloc(GMEM_MOVEABLE, dev_mode_size);
  79   if (!lppd->hDevMode) {
  80     result = E_FAIL;
  81     goto Cleanup;
  82   }
  83   void* dev_mode_ptr = GlobalLock(lppd->hDevMode);
  84   if (!dev_mode_ptr) {
  85     result = E_FAIL;
  86     goto Cleanup;
  87   }
  88   memcpy(dev_mode_ptr, dev_mode, dev_mode_size);
  89   GlobalUnlock(lppd->hDevMode);
  90   dev_mode_ptr = NULL;
  91
  92   size_t driver_size = 2 + sizeof(wchar_t) * lstrlen(info_2.get()->pDriverName);
  93   size_t printer_size = 2 + sizeof(wchar_t) *
  94                             lstrlen(info_2.get()->pPrinterName);
  95   size_t port_size = 2 + sizeof(wchar_t) * lstrlen(info_2.get()->pPortName);
  96   size_t dev_names_size = sizeof(DEVNAMES) + driver_size + printer_size +
  97                           port_size;
  98   lppd->hDevNames = GlobalAlloc(GHND, dev_names_size);
  99   if (!lppd->hDevNames) {
 100     result = E_FAIL;
 101     goto Cleanup;
 102   }
 103   void* dev_names_ptr = GlobalLock(lppd->hDevNames);
 104   if (!dev_names_ptr) {
 105     result = E_FAIL;
 106     goto Cleanup;
 107   }
 108   DEVNAMES* dev_names = reinterpret_cast<DEVNAMES*>(dev_names_ptr);
 109   dev_names->wDefault = 1;
 110   dev_names->wDriverOffset = sizeof(DEVNAMES) / sizeof(wchar_t);
 111   memcpy(reinterpret_cast<uint8*>(dev_names_ptr) + dev_names->wDriverOffset,
 112          info_2.get()->pDriverName, driver_size);
 113   dev_names->wDeviceOffset = dev_names->wDriverOffset +
 114                              driver_size / sizeof(wchar_t);
 115   memcpy(reinterpret_cast<uint8*>(dev_names_ptr) + dev_names->wDeviceOffset,
 116          info_2.get()->pPrinterName, printer_size);
 117   dev_names->wOutputOffset = dev_names->wDeviceOffset +
 118                              printer_size / sizeof(wchar_t);
 119   memcpy(reinterpret_cast<uint8*>(dev_names_ptr) + dev_names->wOutputOffset,
 120          info_2.get()->pPortName, port_size);
 121   GlobalUnlock(lppd->hDevNames);
 122   dev_names_ptr = NULL;
 123
 124 Cleanup:
 125   // Note: This section does proper deallocation/free of DC/global handles.  We
 126   //       did not use ScopedHGlobal or ScopedHandle because they did not
 127   //       perform what we need.  Goto's are used based on Windows programming
 128   //       idiom, to avoid deeply nested if's, and try-catch-finally is not
 129   //       allowed in Chromium.
 130   if (FAILED(result)) {
 131     if (lppd->hDC) {
 132       DeleteDC(lppd->hDC);
 133     }
 134     if (lppd->hDevMode) {
 135       GlobalFree(lppd->hDevMode);
 136     }
 137     if (lppd->hDevNames) {
 138       GlobalFree(lppd->hDevNames);
 139     }
 140   }
 141   ClosePrinter(printer);
 142   return result;
 143 }
 144
 145 TEST_F(PrintingContextTest, Base) {
 146   if (IsTestCaseDisabled())
 147     return;
 148
 149   printing::PrintSettings settings;
 150   settings.set_device_name(GetDefaultPrinter());
 151   // Initialize it.
 152   scoped_ptr<printing::PrintingContext> context(
 153       printing::PrintingContext::Create(std::string()));
 154   EXPECT_EQ(printing::PrintingContext::OK, context->InitWithSettings(settings));
 155
 156   // The print may lie to use and may not support world transformation.
 157   // Verify right now.
 158   XFORM random_matrix = { 1, 0.1f, 0, 1.5f, 0, 1 };
 159   EXPECT_TRUE(SetWorldTransform(context->context(), &random_matrix));
 160   EXPECT_TRUE(ModifyWorldTransform(context->context(), NULL, MWT_IDENTITY));
 161 }
 162
 163 TEST_F(PrintingContextTest, PrintAll) {
 164   base::MessageLoopForUI loop;
 165   if (IsTestCaseDisabled())
 166     return;
 167
 168   std::string dummy_locale;
 169   printing::PrintingContextWin context(dummy_locale);
 170   context.SetPrintDialog(&PrintDlgExMock);
 171   context.AskUserForSettings(
 172       NULL, 123, false, base::Bind(&PrintingContextTest::PrintSettingsCallback,
 173                                    base::Unretained(this)));
 174   base::RunLoop().Run();
 175   EXPECT_EQ(printing::PrintingContext::OK, result());
 176
 177   printing::PrintSettings settings = context.settings();
 178   EXPECT_EQ(settings.ranges().size(), 0);
 179 }