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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/font.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(OS_WIN)
#include "ui/gfx/platform_font_win.h"
#endif
namespace gfx {
namespace {
using FontTest = testing::Test;
#if defined(OS_WIN)
class ScopedMinimumFontSizeCallback {
public:
explicit ScopedMinimumFontSizeCallback(int minimum_size) {
minimum_size_ = minimum_size;
old_callback_ = PlatformFontWin::get_minimum_font_size_callback;
PlatformFontWin::get_minimum_font_size_callback = &GetMinimumFontSize;
}
~ScopedMinimumFontSizeCallback() {
PlatformFontWin::get_minimum_font_size_callback = old_callback_;
}
private:
static int GetMinimumFontSize() {
return minimum_size_;
}
PlatformFontWin::GetMinimumFontSizeCallback old_callback_;
static int minimum_size_;
DISALLOW_COPY_AND_ASSIGN(ScopedMinimumFontSizeCallback);
};
int ScopedMinimumFontSizeCallback::minimum_size_ = 0;
#endif // defined(OS_WIN)
TEST_F(FontTest, LoadArial) {
Font cf("Arial", 16);
#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_IOS)
EXPECT_TRUE(cf.GetNativeFont());
#endif
EXPECT_EQ(cf.GetStyle(), Font::NORMAL);
EXPECT_EQ(cf.GetFontSize(), 16);
EXPECT_EQ(cf.GetFontName(), "Arial");
EXPECT_EQ("arial",
base::StringToLowerASCII(cf.GetActualFontNameForTesting()));
}
TEST_F(FontTest, LoadArialBold) {
Font cf("Arial", 16);
Font bold(cf.Derive(0, Font::BOLD));
#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_IOS)
EXPECT_TRUE(bold.GetNativeFont());
#endif
EXPECT_EQ(bold.GetStyle(), Font::BOLD);
EXPECT_EQ("arial",
base::StringToLowerASCII(cf.GetActualFontNameForTesting()));
}
TEST_F(FontTest, Ascent) {
Font cf("Arial", 16);
EXPECT_GT(cf.GetBaseline(), 2);
EXPECT_LE(cf.GetBaseline(), 22);
}
TEST_F(FontTest, Height) {
Font cf("Arial", 16);
EXPECT_GE(cf.GetHeight(), 16);
// TODO(akalin): Figure out why height is so large on Linux.
EXPECT_LE(cf.GetHeight(), 26);
}
TEST_F(FontTest, CapHeight) {
Font cf("Arial", 16);
EXPECT_GT(cf.GetCapHeight(), 0);
EXPECT_GT(cf.GetCapHeight(), cf.GetHeight() / 2);
EXPECT_LT(cf.GetCapHeight(), cf.GetBaseline());
}
TEST_F(FontTest, AvgWidths) {
Font cf("Arial", 16);
EXPECT_EQ(cf.GetExpectedTextWidth(0), 0);
EXPECT_GT(cf.GetExpectedTextWidth(1), cf.GetExpectedTextWidth(0));
EXPECT_GT(cf.GetExpectedTextWidth(2), cf.GetExpectedTextWidth(1));
EXPECT_GT(cf.GetExpectedTextWidth(3), cf.GetExpectedTextWidth(2));
}
#if !defined(OS_WIN)
// On Windows, Font::GetActualFontNameForTesting() doesn't work well for now.
// http://crbug.com/327287
//
// Check that fonts used for testing are installed and enabled. On Mac
// fonts may be installed but still need enabling in Font Book.app.
// http://crbug.com/347429
TEST_F(FontTest, GetActualFontNameForTesting) {
Font arial("Arial", 16);
EXPECT_EQ("arial",
base::StringToLowerASCII(arial.GetActualFontNameForTesting()))
<< "********\n"
<< "Your test environment seems to be missing Arial font, which is "
<< "needed for unittests. Check if Arial font is installed.\n"
<< "********";
Font symbol("Symbol", 16);
EXPECT_EQ("symbol",
base::StringToLowerASCII(symbol.GetActualFontNameForTesting()))
<< "********\n"
<< "Your test environment seems to be missing Symbol font, which is "
<< "needed for unittests. Check if Symbol font is installed.\n"
<< "********";
const char* const invalid_font_name = "no_such_font_name";
Font fallback_font(invalid_font_name, 16);
EXPECT_NE(invalid_font_name,
base::StringToLowerASCII(
fallback_font.GetActualFontNameForTesting()));
}
#endif
#if defined(OS_WIN)
TEST_F(FontTest, DeriveResizesIfSizeTooSmall) {
Font cf("Arial", 8);
// The minimum font size is set to 5 in browser_main.cc.
ScopedMinimumFontSizeCallback minimum_size(5);
Font derived_font = cf.Derive(-4, cf.GetStyle());
EXPECT_EQ(5, derived_font.GetFontSize());
}
TEST_F(FontTest, DeriveKeepsOriginalSizeIfHeightOk) {
Font cf("Arial", 8);
// The minimum font size is set to 5 in browser_main.cc.
ScopedMinimumFontSizeCallback minimum_size(5);
Font derived_font = cf.Derive(-2, cf.GetStyle());
EXPECT_EQ(6, derived_font.GetFontSize());
}
#endif // defined(OS_WIN)
} // namespace
} // namespace gfx
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