third_party/WebKit/Source/platform/fonts/UnicodeRangeSetTest.cpp

// Copyright 2014 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/fonts/UnicodeRangeSet.h"

#include "testing/gtest/include/gtest/gtest.h"

namespace blink {

static const UChar hiraganaA[2] = {0x3042, 0};

TEST(UnicodeRangeSet, Empty) {
  Vector<UnicodeRange> ranges;
  RefPtr<UnicodeRangeSet> set = adoptRef(new UnicodeRangeSet(ranges));
  EXPECT_TRUE(set->isEntireRange());
  EXPECT_EQ(0u, set->size());
  EXPECT_FALSE(set->intersectsWith(String()));
  EXPECT_TRUE(set->intersectsWith(String("a")));
  EXPECT_TRUE(set->intersectsWith(String(hiraganaA)));
}

TEST(UnicodeRangeSet, SingleCharacter) {
  Vector<UnicodeRange> ranges;
  ranges.push_back(UnicodeRange('b', 'b'));
  RefPtr<UnicodeRangeSet> set = adoptRef(new UnicodeRangeSet(ranges));
  EXPECT_FALSE(set->isEntireRange());
  EXPECT_FALSE(set->intersectsWith(String()));
  EXPECT_FALSE(set->intersectsWith(String("a")));
  EXPECT_TRUE(set->intersectsWith(String("b")));
  EXPECT_FALSE(set->intersectsWith(String("c")));
  EXPECT_TRUE(set->intersectsWith(String("abc")));
  EXPECT_FALSE(set->intersectsWith(String(hiraganaA)));
  ASSERT_EQ(1u, set->size());
  EXPECT_EQ('b', set->rangeAt(0).from());
  EXPECT_EQ('b', set->rangeAt(0).to());
}

TEST(UnicodeRangeSet, TwoRanges) {
  Vector<UnicodeRange> ranges;
  ranges.push_back(UnicodeRange('6', '7'));
  ranges.push_back(UnicodeRange('2', '4'));
  RefPtr<UnicodeRangeSet> set = adoptRef(new UnicodeRangeSet(ranges));
  EXPECT_FALSE(set->isEntireRange());
  EXPECT_FALSE(set->intersectsWith(String()));
  EXPECT_FALSE(set->intersectsWith(String("1")));
  EXPECT_TRUE(set->intersectsWith(String("2")));
  EXPECT_TRUE(set->intersectsWith(String("3")));
  EXPECT_TRUE(set->intersectsWith(String("4")));
  EXPECT_FALSE(set->intersectsWith(String("5")));
  EXPECT_TRUE(set->intersectsWith(String("6")));
  EXPECT_TRUE(set->intersectsWith(String("7")));
  EXPECT_FALSE(set->intersectsWith(String("8")));
  ASSERT_EQ(2u, set->size());
  EXPECT_EQ('2', set->rangeAt(0).from());
  EXPECT_EQ('4', set->rangeAt(0).to());
  EXPECT_EQ('6', set->rangeAt(1).from());
  EXPECT_EQ('7', set->rangeAt(1).to());
}

TEST(UnicodeRangeSet, Overlap) {
  Vector<UnicodeRange> ranges;
  ranges.push_back(UnicodeRange('0', '2'));
  ranges.push_back(UnicodeRange('1', '1'));
  ranges.push_back(UnicodeRange('3', '5'));
  ranges.push_back(UnicodeRange('4', '6'));
  RefPtr<UnicodeRangeSet> set = adoptRef(new UnicodeRangeSet(ranges));
  ASSERT_EQ(1u, set->size());
  EXPECT_EQ('0', set->rangeAt(0).from());
  EXPECT_EQ('6', set->rangeAt(0).to());
}

TEST(UnicodeRangeSet, Non8Bit) {
  Vector<UnicodeRange> ranges;
  ranges.push_back(UnicodeRange(0x3042, 0x3042));
  RefPtr<UnicodeRangeSet> set = adoptRef(new UnicodeRangeSet(ranges));
  ASSERT_EQ(1u, set->size());
  EXPECT_EQ(0x3042, set->rangeAt(0).from());
  EXPECT_EQ(0x3042, set->rangeAt(0).to());
  EXPECT_FALSE(set->intersectsWith(String("a")));
  EXPECT_TRUE(set->intersectsWith(String(hiraganaA)));
}

}  // namespace blink