Debase our Uniscribe code. This moves FontUtils and all our Uniscribe code fr...

base/gfx/uniscribe_unittest.cc

-// 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
-