app/gfx/font_unittest.cc

   1 // Copyright (c) 2006-2008 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 "app/gfx/font.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 namespace {
  10
  11 using gfx::Font;
  12
  13 class FontTest : public testing::Test {
  14 };
  15
  16 TEST_F(FontTest, LoadArial) {
  17   Font cf(Font::CreateFont(L"Arial", 16));
  18   ASSERT_TRUE(cf.nativeFont());
  19   ASSERT_EQ(cf.style(), Font::NORMAL);
  20   ASSERT_EQ(cf.FontSize(), 16);
  21   ASSERT_EQ(cf.FontName(), L"Arial");
  22 }
  23
  24 TEST_F(FontTest, LoadArialBold) {
  25   Font cf(Font::CreateFont(L"Arial", 16));
  26   Font bold(cf.DeriveFont(0, Font::BOLD));
  27   ASSERT_TRUE(bold.nativeFont());
  28   ASSERT_EQ(bold.style(), Font::BOLD);
  29 }
  30
  31 TEST_F(FontTest, Ascent) {
  32   Font cf(Font::CreateFont(L"Arial", 16));
  33   ASSERT_GT(cf.baseline(), 2);
  34   ASSERT_LE(cf.baseline(), 22);
  35 }
  36
  37 TEST_F(FontTest, Height) {
  38   Font cf(Font::CreateFont(L"Arial", 16));
  39   ASSERT_GE(cf.height(), 16);
  40   // TODO(akalin): Figure out why height is so large on Linux.
  41   ASSERT_LE(cf.height(), 26);
  42 }
  43
  44 TEST_F(FontTest, AvgWidths) {
  45   Font cf(Font::CreateFont(L"Arial", 16));
  46   ASSERT_EQ(cf.GetExpectedTextWidth(0), 0);
  47   ASSERT_GT(cf.GetExpectedTextWidth(1), cf.GetExpectedTextWidth(0));
  48   ASSERT_GT(cf.GetExpectedTextWidth(2), cf.GetExpectedTextWidth(1));
  49   ASSERT_GT(cf.GetExpectedTextWidth(3), cf.GetExpectedTextWidth(2));
  50 }
  51
  52 TEST_F(FontTest, Widths) {
  53   Font cf(Font::CreateFont(L"Arial", 16));
  54   ASSERT_EQ(cf.GetStringWidth(L""), 0);
  55   ASSERT_GT(cf.GetStringWidth(L"a"), cf.GetStringWidth(L""));
  56   ASSERT_GT(cf.GetStringWidth(L"ab"), cf.GetStringWidth(L"a"));
  57   ASSERT_GT(cf.GetStringWidth(L"abc"), cf.GetStringWidth(L"ab"));
  58 }
  59
  60 #if defined(OS_WIN)
  61 TEST_F(FontTest, DeriveFontResizesIfSizeTooSmall) {
  62   // This creates font of height -8.
  63   Font cf(Font::CreateFont(L"Arial", 6));
  64   Font derived_font = cf.DeriveFont(-4);
  65   LOGFONT font_info;
  66   GetObject(derived_font.hfont(), sizeof(LOGFONT), &font_info);
  67   EXPECT_EQ(-5, font_info.lfHeight);
  68 }
  69
  70 TEST_F(FontTest, DeriveFontKeepsOriginalSizeIfHeightOk) {
  71   // This creates font of height -8.
  72   Font cf(Font::CreateFont(L"Arial", 6));
  73   Font derived_font = cf.DeriveFont(-2);
  74   LOGFONT font_info;
  75   GetObject(derived_font.hfont(), sizeof(LOGFONT), &font_info);
  76   EXPECT_EQ(-6, font_info.lfHeight);
  77 }
  78 #endif
  79 }  // anonymous namespace