LayoutTests/fast/layout/display-none-no-relayout.html - Issue 188543002: Avoid reattachWhitespaceSiblings when renderer does not change.

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Unified Diff: LayoutTests/fast/layout/display-none-no-relayout.html

Issue 188543002: Avoid reattachWhitespaceSiblings when renderer does not change. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 6 years, 9 months ago

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Index: LayoutTests/fast/layout/display-none-no-relayout.html

diff --git a/LayoutTests/fast/layout/display-none-no-relayout.html b/LayoutTests/fast/layout/display-none-no-relayout.html

new file mode 100644

index 0000000000000000000000000000000000000000..b010807cade70a45081c39008d1700e0d73c17f9

--- /dev/null

+++ b/LayoutTests/fast/layout/display-none-no-relayout.html

@@ -0,0 +1,28 @@

+<!DOCTYPE html>

+<script src="../../resources/js-test.js"></script>

+<style>

+ .a span {}

+</style>

+<div id="parent">

+ <span style="display:none"></span>

+ <div style="float:left;"></div>

+ <span></span>

+</div>

+<script>

+// Force style recalc and layout.

+document.body.offsetTop;

+if (window.internals)

+ shouldBe("window.internals.needsLayoutCount()", "0", true);

+var parent = document.getElementById("parent");

+// Changing the class attribute here will cause a style recalc with a resulting

+// reattach, but it should not cause a relayout.

+parent.className = "a";

+if (window.internals) {

+ shouldBe("window.internals.updateStyleAndReturnAffectedElementCount()", "4", true);

+ shouldBe("window.internals.needsLayoutCount()", "0", true);

+</script>