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-rw-r--r--base/gfx/uniscribe_unittest.cc140
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diff --git a/base/gfx/uniscribe_unittest.cc b/base/gfx/uniscribe_unittest.cc
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--- a/base/gfx/uniscribe_unittest.cc
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-// Copyright (c) 2006-2008 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 "base/gfx/uniscribe.h"
-#include "base/win_util.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-// This must be in the gfx namespace for the friend statements in uniscribe.h
-// to work.
-namespace gfx {
-
-namespace {
-
-class UniscribeTest : public testing::Test {
- public:
- UniscribeTest() {
- }
-
- // Returns an HFONT with the given name. The caller does not have to free
- // this, it will be automatically freed at the end of the test. Returns NULL
- // on failure. On success, the
- HFONT MakeFont(const wchar_t* font_name, SCRIPT_CACHE** cache) {
- LOGFONT lf;
- memset(&lf, 0, sizeof(LOGFONT));
- lf.lfHeight = 20;
- wcscpy_s(lf.lfFaceName, font_name);
-
- HFONT hfont = CreateFontIndirect(&lf);
- if (!hfont)
- return NULL;
-
- *cache = new SCRIPT_CACHE;
- **cache = NULL;
- created_fonts_.push_back(std::make_pair(hfont, *cache));
- return hfont;
- }
-
- protected:
- // Default font properties structure for tests to use.
- SCRIPT_FONTPROPERTIES properties_;
-
- private:
- virtual void SetUp() {
- memset(&properties_, 0, sizeof(SCRIPT_FONTPROPERTIES));
- properties_.cBytes = sizeof(SCRIPT_FONTPROPERTIES);
- properties_.wgBlank = ' ';
- properties_.wgDefault = '?'; // Used when the character is not in the font.
- properties_.wgInvalid = '#'; // Used for invalid characters.
- }
-
- virtual void TearDown() {
- // Free any allocated fonts.
- for (size_t i = 0; i < created_fonts_.size(); i++) {
- DeleteObject(created_fonts_[i].first);
- ScriptFreeCache(created_fonts_[i].second);
- delete created_fonts_[i].second;
- }
- created_fonts_.clear();
- }
-
- // Tracks allocated fonts so we can delete them at the end of the test.
- // The script cache pointer is heap allocated and must be freed.
- std::vector< std::pair<HFONT, SCRIPT_CACHE*> > created_fonts_;
-
- DISALLOW_EVIL_CONSTRUCTORS(UniscribeTest);
-};
-
-} // namespace
-
-// This test tests giving Uniscribe a very large buffer, which will cause a
-// failure.
-TEST_F(UniscribeTest, TooBig) {
- // This test will only run on Windows XP. It seems Uniscribe does not have the
- // internal limit on Windows 2000 that we rely on to cause this failure.
- if (win_util::GetWinVersion() <= win_util::WINVERSION_2000)
- return;
-
- // Make a large string with an e with a zillion combining accents.
- std::wstring input(L"e");
- for (int i = 0; i < 100000; i++)
- input.push_back(0x301); // Combining acute accent.
-
- SCRIPT_CACHE* script_cache;
- HFONT hfont = MakeFont(L"Times New Roman", &script_cache);
- ASSERT_TRUE(hfont);
-
- // Test a long string without the normal length protection we have. This will
- // cause shaping to fail.
- {
- gfx::UniscribeState uniscribe(input.data(), static_cast<int>(input.size()),
- false, hfont, script_cache, &properties_);
- uniscribe.InitWithOptionalLengthProtection(false);
-
- // There should be one shaping entry, with nothing in it.
- ASSERT_EQ(1, uniscribe.shapes_->size());
- EXPECT_EQ(0, uniscribe.shapes_[0].glyphs->size());
- EXPECT_EQ(0, uniscribe.shapes_[0].logs->size());
- EXPECT_EQ(0, uniscribe.shapes_[0].visattr->size());
- EXPECT_EQ(0, uniscribe.shapes_[0].advance->size());
- EXPECT_EQ(0, uniscribe.shapes_[0].offsets->size());
- EXPECT_EQ(0, uniscribe.shapes_[0].justify->size());
- EXPECT_EQ(0, uniscribe.shapes_[0].abc.abcA);
- EXPECT_EQ(0, uniscribe.shapes_[0].abc.abcB);
- EXPECT_EQ(0, uniscribe.shapes_[0].abc.abcC);
-
- // The sizes of the other stuff should match the shaping entry.
- EXPECT_EQ(1, uniscribe.runs_->size());
- EXPECT_EQ(1, uniscribe.screen_order_->size());
-
- // Check that the various querying functions handle the empty case properly.
- EXPECT_EQ(0, uniscribe.Width());
- EXPECT_EQ(0, uniscribe.FirstGlyphForCharacter(0));
- EXPECT_EQ(0, uniscribe.FirstGlyphForCharacter(1000));
- EXPECT_EQ(0, uniscribe.XToCharacter(0));
- EXPECT_EQ(0, uniscribe.XToCharacter(1000));
- }
-
- // Now test the very large string and make sure it is handled properly by the
- // length protection.
- {
- gfx::UniscribeState uniscribe(input.data(), static_cast<int>(input.size()),
- false, hfont, script_cache, &properties_);
- uniscribe.InitWithOptionalLengthProtection(true);
-
- // There should be 0 runs and shapes.
- EXPECT_EQ(0, uniscribe.runs_->size());
- EXPECT_EQ(0, uniscribe.shapes_->size());
- EXPECT_EQ(0, uniscribe.screen_order_->size());
-
- EXPECT_EQ(0, uniscribe.Width());
- EXPECT_EQ(0, uniscribe.FirstGlyphForCharacter(0));
- EXPECT_EQ(0, uniscribe.FirstGlyphForCharacter(1000));
- EXPECT_EQ(0, uniscribe.XToCharacter(0));
- EXPECT_EQ(0, uniscribe.XToCharacter(1000));
- }
-}
-
-} // namespace gfx
-