ui/gfx/font_unittest.cc

   1 // Copyright (c) 2012 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 "ui/gfx/font.h"
   6
   7 #include "base/strings/string16.h"
   8 #include "base/strings/string_util.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 #if defined(OS_WIN)
  13 #include "ui/gfx/platform_font_win.h"
  14 #endif
  15
  16 namespace gfx {
  17 namespace {
  18
  19 using FontTest = testing::Test;
  20
  21 #if defined(OS_WIN)
  22 class ScopedMinimumFontSizeCallback {
  23  public:
  24   explicit ScopedMinimumFontSizeCallback(int minimum_size) {
  25     minimum_size_ = minimum_size;
  26     old_callback_ = PlatformFontWin::get_minimum_font_size_callback;
  27     PlatformFontWin::get_minimum_font_size_callback = &GetMinimumFontSize;
  28   }
  29
  30   ~ScopedMinimumFontSizeCallback() {
  31     PlatformFontWin::get_minimum_font_size_callback = old_callback_;
  32   }
  33
  34  private:
  35   static int GetMinimumFontSize() {
  36     return minimum_size_;
  37   }
  38
  39   PlatformFontWin::GetMinimumFontSizeCallback old_callback_;
  40   static int minimum_size_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(ScopedMinimumFontSizeCallback);
  43 };
  44
  45 int ScopedMinimumFontSizeCallback::minimum_size_ = 0;
  46 #endif  // defined(OS_WIN)
  47
  48 #if defined(OS_ANDROID)
  49 #define MAYBE_LoadArial DISABLED_LoadArial
  50 #else
  51 #define MAYBE_LoadArial LoadArial
  52 #endif
  53 TEST_F(FontTest, MAYBE_LoadArial) {
  54   Font cf("Arial", 16);
  55 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_IOS)
  56   EXPECT_TRUE(cf.GetNativeFont());
  57 #endif
  58   EXPECT_EQ(cf.GetStyle(), Font::NORMAL);
  59   EXPECT_EQ(cf.GetFontSize(), 16);
  60   EXPECT_EQ(cf.GetFontName(), "Arial");
  61   EXPECT_EQ("arial",
  62             base::StringToLowerASCII(cf.GetActualFontNameForTesting()));
  63 }
  64
  65 #if defined(OS_ANDROID)
  66 #define MAYBE_LoadArialBold DISABLED_LoadArialBold
  67 #else
  68 #define MAYBE_LoadArialBold LoadArialBold
  69 #endif
  70 TEST_F(FontTest, MAYBE_LoadArialBold) {
  71   Font cf("Arial", 16);
  72   Font bold(cf.Derive(0, Font::BOLD));
  73 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_IOS)
  74   EXPECT_TRUE(bold.GetNativeFont());
  75 #endif
  76   EXPECT_EQ(bold.GetStyle(), Font::BOLD);
  77   EXPECT_EQ("arial",
  78             base::StringToLowerASCII(cf.GetActualFontNameForTesting()));
  79 }
  80
  81 #if defined(OS_ANDROID)
  82 #define MAYBE_Ascent DISABLED_Ascent
  83 #else
  84 #define MAYBE_Ascent Ascent
  85 #endif
  86 TEST_F(FontTest, MAYBE_Ascent) {
  87   Font cf("Arial", 16);
  88   EXPECT_GT(cf.GetBaseline(), 2);
  89   EXPECT_LE(cf.GetBaseline(), 22);
  90 }
  91
  92 #if defined(OS_ANDROID)
  93 #define MAYBE_Height DISABLED_Height
  94 #else
  95 #define MAYBE_Height Height
  96 #endif
  97 TEST_F(FontTest, MAYBE_Height) {
  98   Font cf("Arial", 16);
  99   EXPECT_GE(cf.GetHeight(), 16);
 100   // TODO(akalin): Figure out why height is so large on Linux.
 101   EXPECT_LE(cf.GetHeight(), 26);
 102 }
 103
 104 #if defined(OS_ANDROID)
 105 #define MAYBE_CapHeight DISABLED_CapHeight
 106 #else
 107 #define MAYBE_CapHeight CapHeight
 108 #endif
 109 TEST_F(FontTest, MAYBE_CapHeight) {
 110   Font cf("Arial", 16);
 111   EXPECT_GT(cf.GetCapHeight(), 0);
 112   EXPECT_GT(cf.GetCapHeight(), cf.GetHeight() / 2);
 113   EXPECT_LT(cf.GetCapHeight(), cf.GetBaseline());
 114 }
 115
 116 #if defined(OS_ANDROID)
 117 #define MAYBE_AvgWidths DISABLED_AvgWidths
 118 #else
 119 #define MAYBE_AvgWidths AvgWidths
 120 #endif
 121 TEST_F(FontTest, MAYBE_AvgWidths) {
 122   Font cf("Arial", 16);
 123   EXPECT_EQ(cf.GetExpectedTextWidth(0), 0);
 124   EXPECT_GT(cf.GetExpectedTextWidth(1), cf.GetExpectedTextWidth(0));
 125   EXPECT_GT(cf.GetExpectedTextWidth(2), cf.GetExpectedTextWidth(1));
 126   EXPECT_GT(cf.GetExpectedTextWidth(3), cf.GetExpectedTextWidth(2));
 127 }
 128
 129 #if defined(OS_WIN) || defined(OS_ANDROID)
 130 #define MAYBE_GetActualFontNameForTesting DISABLED_GetActualFontNameForTesting
 131 #else
 132 #define MAYBE_GetActualFontNameForTesting GetActualFontNameForTesting
 133 #endif
 134 // On Windows, Font::GetActualFontNameForTesting() doesn't work well for now.
 135 // http://crbug.com/327287
 136 //
 137 // Check that fonts used for testing are installed and enabled. On Mac
 138 // fonts may be installed but still need enabling in Font Book.app.
 139 // http://crbug.com/347429
 140 TEST_F(FontTest, MAYBE_GetActualFontNameForTesting) {
 141   Font arial("Arial", 16);
 142   EXPECT_EQ("arial",
 143             base::StringToLowerASCII(arial.GetActualFontNameForTesting()))
 144       << "********\n"
 145       << "Your test environment seems to be missing Arial font, which is "
 146       << "needed for unittests.  Check if Arial font is installed.\n"
 147       << "********";
 148   Font symbol("Symbol", 16);
 149   EXPECT_EQ("symbol",
 150             base::StringToLowerASCII(symbol.GetActualFontNameForTesting()))
 151       << "********\n"
 152       << "Your test environment seems to be missing Symbol font, which is "
 153       << "needed for unittests.  Check if Symbol font is installed.\n"
 154       << "********";
 155
 156   const char* const invalid_font_name = "no_such_font_name";
 157   Font fallback_font(invalid_font_name, 16);
 158   EXPECT_NE(invalid_font_name,
 159             base::StringToLowerASCII(
 160                 fallback_font.GetActualFontNameForTesting()));
 161 }
 162
 163 #if defined(OS_WIN)
 164 TEST_F(FontTest, DeriveResizesIfSizeTooSmall) {
 165   Font cf("Arial", 8);
 166   // The minimum font size is set to 5 in browser_main.cc.
 167   ScopedMinimumFontSizeCallback minimum_size(5);
 168
 169   Font derived_font = cf.Derive(-4, cf.GetStyle());
 170   EXPECT_EQ(5, derived_font.GetFontSize());
 171 }
 172
 173 TEST_F(FontTest, DeriveKeepsOriginalSizeIfHeightOk) {
 174   Font cf("Arial", 8);
 175   // The minimum font size is set to 5 in browser_main.cc.
 176   ScopedMinimumFontSizeCallback minimum_size(5);
 177
 178   Font derived_font = cf.Derive(-2, cf.GetStyle());
 179   EXPECT_EQ(6, derived_font.GetFontSize());
 180 }
 181 #endif  // defined(OS_WIN)
 182
 183 }  // namespace
 184 }  // namespace gfx