third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm_test.cc - Issue 2816933003: Use Layout Opportunity Iterator to position new FC blocks.

Unified Diff: third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm_test.cc

Issue 2816933003: Use Layout Opportunity Iterator to position new FC blocks. (Closed)

Patch Set: fix block-formatting-contexts-{005|007} Created 3 years, 8 months ago

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Index: third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm_test.cc

diff --git a/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm_test.cc b/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm_test.cc

index 6f72f770761f110479321be98d42a303ba28c64b..73f8eabff837c870d3324643ea144975bbfc9b4b 100644

--- a/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm_test.cc

+++ b/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm_test.cc

@@ -1906,8 +1906,8 @@ TEST_F(NGBlockLayoutAlgorithmTest, PositionEmptyBlocksInNewBfc) {

ASSERT_EQ(1UL, floating_objects.size());

auto floating_object = floating_objects.TakeFirst();

// left-float's margin = 15.

- EXPECT_THAT(LayoutUnit(15), floating_object->X());

- EXPECT_THAT(LayoutUnit(15), floating_object->Y());

+ EXPECT_THAT(floating_object->X(), LayoutUnit(15));

+ EXPECT_THAT(floating_object->Y(), LayoutUnit(15));

RefPtr<const NGPhysicalBoxFragment> html_fragment;

std::tie(html_fragment, std::ignore) = RunBlockLayoutAlgorithmForElement(

@@ -1919,14 +1919,14 @@ TEST_F(NGBlockLayoutAlgorithmTest, PositionEmptyBlocksInNewBfc) {

auto* empty_block1 =

ToNGPhysicalBoxFragment(container_fragment->Children()[0].Get());

// empty-block1's margin == 8

- EXPECT_THAT(NGPhysicalOffset(LayoutUnit(8), LayoutUnit(8)),

- empty_block1->Offset());

+ EXPECT_THAT(empty_block1->Offset(),

+ NGPhysicalOffset(LayoutUnit(8), LayoutUnit(8)));

auto* empty_block2 =

ToNGPhysicalBoxFragment(container_fragment->Children()[1].Get());

// empty-block2's margin == 50

- EXPECT_THAT(NGPhysicalOffset(LayoutUnit(0), LayoutUnit(50)),

- empty_block2->Offset());

+ EXPECT_THAT(empty_block2->Offset(),

+ NGPhysicalOffset(LayoutUnit(0), LayoutUnit(50)));

}

// Verifies that we can correctly position blocks with clearance and

@@ -2270,7 +2270,66 @@ TEST_F(NGBlockLayoutAlgorithmTest, InnerChildrenFragmentationSmallHeight) {

EXPECT_FALSE(iterator.NextChild());

}

-TEST_F(NGBlockLayoutAlgorithmTest, NewFormattingContextBlock) {}

+// Verifies that we correctly position a new FC block with the Layout

+// Opportunity iterator.

+TEST_F(NGBlockLayoutAlgorithmTest,

+ NewFcBlockWithAdjoiningFloatCollapsesMargins) {

+ SetBodyInnerHTML(R"HTML(

+ <!DOCTYPE html>

+ <style>

+ #container {

+ width: 200px; outline: solid purple 1px;

+ }

+ #float {

+ float: left; width: 100px; height: 30px; background: red;

+ }

+ #new-fc {

+ contain: paint; margin-top: 20px; background: purple;

+ height: 50px;

+ }

+ </style>

+ <div id="container">

+ <div id="float"></div>

+ <div id="new-fc"></div>

+ </div>

+ )HTML");

+ const NGPhysicalBoxFragment* body_fragment;

+ const NGPhysicalBoxFragment* container_fragment;

+ const NGPhysicalBoxFragment* new_fc_fragment;

+ RefPtr<const NGPhysicalBoxFragment> fragment;

+ auto run_test = [&](const Length& block_width) {

+ Element* new_fc_block = GetDocument().GetElementById("new-fc");

+ new_fc_block->MutableComputedStyle()->SetWidth(block_width);

+ std::tie(fragment, std::ignore) = RunBlockLayoutAlgorithmForElement(

+ GetDocument().getElementsByTagName("html")->item(0));

+ ASSERT_EQ(1UL, fragment->Children().size());

+ body_fragment = ToNGPhysicalBoxFragment(fragment->Children()[0].Get());

+ container_fragment =

+ ToNGPhysicalBoxFragment(body_fragment->Children()[0].Get());

+ ASSERT_EQ(1UL, container_fragment->Children().size());

+ new_fc_fragment =

+ ToNGPhysicalBoxFragment(container_fragment->Children()[0].Get());

+ };

+ // #new-fc is small enough to fit on the same line with #float.

+ run_test(Length(80, kFixed));

+ // 100 = float's width, 0 = no margin collapsing

+ EXPECT_THAT(new_fc_fragment->Offset(),

+ NGPhysicalOffset(LayoutUnit(100), LayoutUnit(0)));

+ // 8 = body's margins, 20 = new-fc's margin top(20) collapses with

+ // body's margin(8)

+ EXPECT_THAT(body_fragment->Offset(),

+ NGPhysicalOffset(LayoutUnit(8), LayoutUnit(20)));

+ // #new-fc is too wide to be positioned on the same line with #float

+ run_test(Length(120, kFixed));

+ // 30 = #float's height

+ EXPECT_THAT(new_fc_fragment->Offset(),

+ NGPhysicalOffset(LayoutUnit(0), LayoutUnit(30)));

+ // 8 = body's margins, no margin collapsing

+ EXPECT_THAT(body_fragment->Offset(),

+ NGPhysicalOffset(LayoutUnit(8), LayoutUnit(8)));

} // namespace

} // namespace blink