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// Copyright 2016 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 "platform/text/Hyphenation.h"
#include "platform/LayoutLocale.h"
#include "testing/gtest/include/gtest/gtest.h"
#if OS(ANDROID)
#include "base/files/file_path.h"
#include "platform/text/hyphenation/HyphenationMinikin.h"
#endif
namespace blink {
class NoHyphenation : public Hyphenation {
public:
size_t lastHyphenLocation(const StringView&,
size_t beforeIndex) const override {
return 0;
}
};
TEST(HyphenationTest, Get) {
RefPtr<Hyphenation> hyphenation = adoptRef(new NoHyphenation);
LayoutLocale::setHyphenationForTesting("en-US", hyphenation);
EXPECT_EQ(hyphenation.get(), LayoutLocale::get("en-US")->getHyphenation());
LayoutLocale::setHyphenationForTesting("en-UK", nullptr);
EXPECT_EQ(nullptr, LayoutLocale::get("en-UK")->getHyphenation());
LayoutLocale::clearForTesting();
}
#if OS(ANDROID) || OS(MACOSX)
TEST(HyphenationTest, LastHyphenLocation) {
#if OS(ANDROID)
// Because the mojo service to open hyphenation dictionaries is not accessible
// from the unit test, open the dictionary file directly for testing.
base::FilePath path("/system/usr/hyphen-data/hyph-en-us.hyb");
base::File file(path, base::File::FLAG_OPEN | base::File::FLAG_READ);
if (!file.IsValid()) {
// Ignore this test on platforms without hyphenation dictionaries.
return;
}
RefPtr<Hyphenation> hyphenation =
HyphenationMinikin::fromFileForTesting(std::move(file));
#else
const LayoutLocale* locale = LayoutLocale::get("en-us");
ASSERT_TRUE(locale);
Hyphenation* hyphenation = locale->getHyphenation();
#endif
ASSERT_TRUE(hyphenation) << "Cannot find the hyphenation engine";
// Get all hyphenation points by |hyphenLocations|.
const String word("hyphenation");
Vector<size_t, 8> locations = hyphenation->hyphenLocations(word);
for (unsigned i = 1; i < locations.size(); i++) {
ASSERT_GT(locations[i - 1], locations[i])
<< "hyphenLocations must return locations in the descending order";
}
// Test |lastHyphenLocation| returns all hyphenation points.
locations.push_back(0);
size_t locationIndex = locations.size() - 1;
for (size_t beforeIndex = 0; beforeIndex < word.length(); beforeIndex++) {
size_t location = hyphenation->lastHyphenLocation(word, beforeIndex);
if (location)
EXPECT_LT(location, beforeIndex);
if (locationIndex > 0 && location == locations[locationIndex - 1])
locationIndex--;
EXPECT_EQ(locations[locationIndex], location) << String::format(
"lastHyphenLocation(%s, %zd)", word.utf8().data(), beforeIndex);
}
EXPECT_EQ(locationIndex, 0u)
<< "Not all locations are found by lastHyphenLocation";
}
#endif
} // namespace blink
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