// Copyright 2015 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "core/fxcrt/fx_bidi.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace {
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const FX_WCHAR kNeutralChar = 32;
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const FX_WCHAR kLeftChar = 65;
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const FX_WCHAR kRightChar = 1424;
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} // namespace
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TEST(fxcrt, BidiCharEmpty) {
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CFX_BidiChar bidi;
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CFX_BidiChar::Segment info;
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, info.direction);
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(0, info.count);
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EXPECT_FALSE(bidi.EndChar());
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}
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TEST(fxcrt, BidiCharLeft) {
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CFX_BidiChar bidi;
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CFX_BidiChar::Segment info;
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EXPECT_TRUE(bidi.AppendChar(kLeftChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(0, info.count);
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EXPECT_FALSE(bidi.AppendChar(kLeftChar));
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EXPECT_FALSE(bidi.AppendChar(kLeftChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, info.direction);
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(0, info.count);
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EXPECT_TRUE(bidi.EndChar());
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(CFX_BidiChar::LEFT, info.direction);
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(3, info.count);
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EXPECT_FALSE(bidi.EndChar());
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}
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TEST(fxcrt, BidiCharLeftNeutralRight) {
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CFX_BidiChar bidi;
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CFX_BidiChar::Segment info;
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EXPECT_TRUE(bidi.AppendChar(kLeftChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(0, info.count);
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EXPECT_FALSE(bidi.AppendChar(kLeftChar));
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EXPECT_FALSE(bidi.AppendChar(kLeftChar));
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EXPECT_TRUE(bidi.AppendChar(kNeutralChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(3, info.count);
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EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
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EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
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EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
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EXPECT_TRUE(bidi.AppendChar(kRightChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, info.direction);
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EXPECT_EQ(3, info.start);
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EXPECT_EQ(4, info.count);
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EXPECT_TRUE(bidi.EndChar());
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(CFX_BidiChar::RIGHT, info.direction);
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EXPECT_EQ(7, info.start);
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EXPECT_EQ(1, info.count);
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EXPECT_FALSE(bidi.EndChar());
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}
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TEST(fxcrt, BidiCharLeftRightLeft) {
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CFX_BidiChar bidi;
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CFX_BidiChar::Segment info;
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EXPECT_TRUE(bidi.AppendChar(kLeftChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(0, info.count);
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EXPECT_FALSE(bidi.AppendChar(kLeftChar));
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EXPECT_FALSE(bidi.AppendChar(kLeftChar));
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EXPECT_TRUE(bidi.AppendChar(kRightChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(0, info.start);
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EXPECT_EQ(3, info.count);
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EXPECT_FALSE(bidi.AppendChar(kRightChar));
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EXPECT_FALSE(bidi.AppendChar(kRightChar));
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EXPECT_FALSE(bidi.AppendChar(kRightChar));
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EXPECT_TRUE(bidi.AppendChar(kLeftChar));
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(CFX_BidiChar::RIGHT, info.direction);
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EXPECT_EQ(3, info.start);
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EXPECT_EQ(4, info.count);
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EXPECT_TRUE(bidi.EndChar());
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info = bidi.GetSegmentInfo();
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EXPECT_EQ(CFX_BidiChar::LEFT, info.direction);
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EXPECT_EQ(7, info.start);
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EXPECT_EQ(1, info.count);
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EXPECT_FALSE(bidi.EndChar());
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}
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TEST(fxcrt, BidiStringEmpty) {
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CFX_BidiString bidi(L"");
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EXPECT_EQ(CFX_BidiChar::LEFT, bidi.OverallDirection());
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EXPECT_TRUE(bidi.begin() == bidi.end());
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}
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TEST(fxcrt, BidiStringAllNeutral) {
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{
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const FX_WCHAR str[] = {kNeutralChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::LEFT, bidi.OverallDirection());
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auto it = bidi.begin();
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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{
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const FX_WCHAR str[] = {kNeutralChar, kNeutralChar, kNeutralChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::LEFT, bidi.OverallDirection());
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auto it = bidi.begin();
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(3, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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}
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TEST(fxcrt, BidiStringAllLeft) {
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{
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const FX_WCHAR str[] = {kLeftChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::LEFT, bidi.OverallDirection());
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auto it = bidi.begin();
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(0, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::LEFT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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{
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const FX_WCHAR str[] = {kLeftChar, kLeftChar, kLeftChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::LEFT, bidi.OverallDirection());
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auto it = bidi.begin();
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(0, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(3, it->count);
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EXPECT_EQ(CFX_BidiChar::LEFT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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}
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TEST(fxcrt, BidiStringAllRight) {
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{
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const FX_WCHAR str[] = {kRightChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::RIGHT, bidi.OverallDirection());
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auto it = bidi.begin();
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::RIGHT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(0, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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{
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const FX_WCHAR str[] = {kRightChar, kRightChar, kRightChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::RIGHT, bidi.OverallDirection());
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auto it = bidi.begin();
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(3, it->count);
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EXPECT_EQ(CFX_BidiChar::RIGHT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(0, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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}
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TEST(fxcrt, BidiStringLeftNeutralLeftRight) {
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const FX_WCHAR str[] = {kLeftChar, kNeutralChar, kLeftChar, kRightChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::LEFT, bidi.OverallDirection());
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auto it = bidi.begin();
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(0, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::LEFT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(1, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(2, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::LEFT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(3, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::RIGHT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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TEST(fxcrt, BidiStringRightNeutralLeftRight) {
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const FX_WCHAR str[] = {kRightChar, kNeutralChar, kLeftChar, kRightChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::RIGHT, bidi.OverallDirection());
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auto it = bidi.begin();
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EXPECT_EQ(3, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::RIGHT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(2, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::LEFT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(1, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::RIGHT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(0, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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TEST(fxcrt, BidiStringReverse) {
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const FX_WCHAR str[] = {kLeftChar, kNeutralChar, kRightChar, kLeftChar, 0};
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CFX_BidiString bidi(str);
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EXPECT_EQ(CFX_BidiChar::LEFT, bidi.OverallDirection());
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bidi.SetOverallDirectionRight();
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auto it = bidi.begin();
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(3, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::LEFT, it->direction);
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++it;
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(2, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::RIGHT, it->direction);
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ASSERT_FALSE(it == bidi.end());
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++it;
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(1, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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++it;
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(1, it->count);
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EXPECT_EQ(CFX_BidiChar::LEFT, it->direction);
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++it;
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ASSERT_FALSE(it == bidi.end());
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EXPECT_EQ(0, it->start);
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EXPECT_EQ(0, it->count);
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EXPECT_EQ(CFX_BidiChar::NEUTRAL, it->direction);
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++it;
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EXPECT_TRUE(it == bidi.end());
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}
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