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// Copyright 2017 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 "third_party/blink/renderer/core/paint/ng/ng_text_fragment_painter.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/layout/ng/inline/ng_inline_cursor.h"
#include "third_party/blink/renderer/core/layout/ng/layout_ng_block_flow.h"
#include "third_party/blink/renderer/core/layout/ng/ng_block_node.h"
#include "third_party/blink/renderer/core/paint/ng/ng_paint_fragment.h"
#include "third_party/blink/renderer/core/paint/paint_controller_paint_test.h"
#include "third_party/blink/renderer/platform/testing/runtime_enabled_features_test_helpers.h"
using testing::ElementsAre;
namespace blink {
class NGTextFragmentPainterTest : public PaintControllerPaintTest,
private ScopedLayoutNGForTest {
public:
NGTextFragmentPainterTest(LocalFrameClient* local_frame_client = nullptr)
: PaintControllerPaintTest(local_frame_client),
ScopedLayoutNGForTest(true) {}
};
INSTANTIATE_PAINT_TEST_SUITE_P(NGTextFragmentPainterTest);
TEST_P(NGTextFragmentPainterTest, TestTextStyle) {
SetBodyInnerHTML(R"HTML(
<!DOCTYPE html>
<body>
<div id="container">Hello World!</div>
</body>
)HTML");
LayoutObject& container = *GetLayoutObjectByElementId("container");
const LayoutNGBlockFlow& block_flow = ToLayoutNGBlockFlow(container);
InvalidateAll(RootPaintController());
GetDocument().View()->UpdateAllLifecyclePhasesExceptPaint(
DocumentUpdateReason::kTest);
Paint(IntRect(0, 0, 640, 480));
NGInlineCursor cursor;
cursor.MoveTo(*block_flow.FirstChild());
const DisplayItemClient& text_fragment =
*cursor.Current().GetDisplayItemClient();
EXPECT_THAT(RootPaintController().GetDisplayItemList(),
ElementsAre(IsSameId(&ViewScrollingBackgroundClient(),
DisplayItem::kDocumentBackground),
IsSameId(&text_fragment, kForegroundType)));
}
TEST_P(NGTextFragmentPainterTest, LineBreak) {
SetBodyInnerHTML("<span style='font-size: 20px'>A<br>B<br>C</span>");
// 0: view background, 1: A, 2: B, 3: C
EXPECT_EQ(4u, RootPaintController().GetDisplayItemList().size());
GetDocument().GetFrame()->Selection().SelectAll();
UpdateAllLifecyclePhasesForTest();
// 0: view background, 1: A, 2: <br>, 3: B, 4: <br>, 5: C
EXPECT_EQ(6u, RootPaintController().GetDisplayItemList().size());
}
TEST_P(NGTextFragmentPainterTest, DegenerateUnderlineIntercepts) {
SetBodyInnerHTML(R"HTML(
<!DOCTYPE html>
<style>
span {
font-size: 20px;
text-decoration: underline;
}
</style>
<span style="letter-spacing: -1e9999em;">a|b|c d{e{f{</span>
<span style="letter-spacing: 1e9999em;">a|b|c d{e{f{</span>
)HTML");
UpdateAllLifecyclePhasesForTest();
// Test for https://crbug.com/1043753: the underline intercepts are infinite
// due to letter spacing and this test passes if that does not cause a crash.
}
} // namespace blink
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