third_party/WebKit/LayoutTests/fast/multicol/dynamic/invalid-spanner-container-becomes-valid.html - Issue 2479873002: Descendants may become or cease to be spanners when an ancestor changes style.

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Unified Diff: third_party/WebKit/LayoutTests/fast/multicol/dynamic/invalid-spanner-container-becomes-valid.html

Issue 2479873002: Descendants may become or cease to be spanners when an ancestor changes style. (Closed)

Patch Set: Created 4 years, 1 month ago

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Index: third_party/WebKit/LayoutTests/fast/multicol/dynamic/invalid-spanner-container-becomes-valid.html

diff --git a/third_party/WebKit/LayoutTests/fast/multicol/dynamic/invalid-spanner-container-becomes-valid.html b/third_party/WebKit/LayoutTests/fast/multicol/dynamic/invalid-spanner-container-becomes-valid.html

new file mode 100644

index 0000000000000000000000000000000000000000..065e21a3729b56ca4cdcf81efb6fd58cfdfaaec5

--- /dev/null

+++ b/third_party/WebKit/LayoutTests/fast/multicol/dynamic/invalid-spanner-container-becomes-valid.html

@@ -0,0 +1,21 @@

+<!DOCTYPE html>

+<p>There should be a blue square below, and no red.</p>

+<div id="multicol" style="columns:2; column-gap:80px; width:100px; background:red;">

+ <div id="changeMe" style="float:left;">

+ <div id="spanner" style="column-span:all; height:100px; background:blue;"></div>

+ </div>

+</div>

+<script src="../../../resources/testharness.js"></script>

+<script src="../../../resources/testharnessreport.js"></script>

+<script>

+test(() => {

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

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

+ var changeMe = document.getElementById('changeMe');

+ document.documentElement.offsetTop;

+ changeMe.style.cssFloat = 'none';

+ assert_equals(multicol.offsetHeight, 100);

+ assert_equals(spanner.offsetWidth, 100);

+}, "Turn a spanner candidate's parent from float into regular block");

+</script>