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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/text/writing_direction_mode.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace blink {
namespace {
PhysicalDirection LineOver(WritingMode mode) {
return WritingDirectionMode(mode, TextDirection::kLtr).LineOver();
}
PhysicalDirection LineUnder(WritingMode mode) {
return WritingDirectionMode(mode, TextDirection::kLtr).LineUnder();
}
} // namespace
TEST(WritingDirectionModeTest, LineOver) {
EXPECT_EQ(PhysicalDirection::kUp, LineOver(WritingMode::kHorizontalTb));
EXPECT_EQ(PhysicalDirection::kRight, LineOver(WritingMode::kVerticalRl));
EXPECT_EQ(PhysicalDirection::kRight, LineOver(WritingMode::kVerticalLr));
EXPECT_EQ(PhysicalDirection::kRight, LineOver(WritingMode::kSidewaysRl));
EXPECT_EQ(PhysicalDirection::kLeft, LineOver(WritingMode::kSidewaysLr));
}
TEST(WritingDirectionModeTest, LineUnder) {
EXPECT_EQ(PhysicalDirection::kDown, LineUnder(WritingMode::kHorizontalTb));
EXPECT_EQ(PhysicalDirection::kLeft, LineUnder(WritingMode::kVerticalRl));
EXPECT_EQ(PhysicalDirection::kLeft, LineUnder(WritingMode::kVerticalLr));
EXPECT_EQ(PhysicalDirection::kLeft, LineUnder(WritingMode::kSidewaysRl));
EXPECT_EQ(PhysicalDirection::kRight, LineUnder(WritingMode::kSidewaysLr));
}
TEST(WritingDirectionModeTest, IsFlippedXY) {
struct TestData {
WritingDirectionMode writing_direction;
bool is_flipped_x;
bool is_flipped_y;
} test_data_list[] = {
{{WritingMode::kHorizontalTb, TextDirection::kLtr}, false, false},
{{WritingMode::kHorizontalTb, TextDirection::kRtl}, true, false},
{{WritingMode::kVerticalRl, TextDirection::kLtr}, true, false},
{{WritingMode::kVerticalRl, TextDirection::kRtl}, true, true},
{{WritingMode::kVerticalLr, TextDirection::kLtr}, false, false},
{{WritingMode::kVerticalLr, TextDirection::kRtl}, false, true},
{{WritingMode::kSidewaysRl, TextDirection::kLtr}, true, false},
{{WritingMode::kSidewaysRl, TextDirection::kRtl}, true, true},
{{WritingMode::kSidewaysLr, TextDirection::kLtr}, false, true},
{{WritingMode::kSidewaysLr, TextDirection::kRtl}, false, false},
};
for (const TestData& data : test_data_list) {
SCOPED_TRACE(data.writing_direction);
EXPECT_EQ(data.writing_direction.IsFlippedX(), data.is_flipped_x);
EXPECT_EQ(data.writing_direction.IsFlippedY(), data.is_flipped_y);
}
}
} // namespace blink
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