third_party/WebKit/LayoutTests/fast/css/null-ruleset-non-matching-media-crash.html - Issue 2650743002: Return ActiveSheetsChanged when rulesets change in common prefix.

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Side by Side Diff: third_party/WebKit/LayoutTests/fast/css/null-ruleset-non-matching-media-crash.html

Issue 2650743002: Return ActiveSheetsChanged when rulesets change in common prefix. (Closed)

Patch Set: Documentation and more descriptive variable name. Created 3 years, 10 months ago

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	1 <!DOCTYPE html>

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

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

	4 <style>#t1 { color: red }</style>

	5 <div id="t1">Should be green.</div>

	6 <script>

	7 test(() => {

	8 // Triggers synch active stylesheet update.

	9 var sheet = document.styleSheets[0];

	10 // Clears the previous RuleSet for rebuild.

	11 sheet.insertRule("#dummy {}", 0);

	12 // No Ruleset recreated since media does not match.

	13 sheet.media.mediaText = "nomatch";

	14 var newStyle = document.createElement("style");

	15 newStyle.appendChild(document.createTextNode("div { color: green }"));

	16 // New sheet triggers active stylesheet update and style recalc for #t1.

	17 document.head.appendChild(newStyle);

	18 }, "Check that appending a stylesheet while clearing the RuleSet of an exist ing sheet does not crash");

	19

	20 test(() => assert_equals(getComputedStyle(t1).color, "rgb(0, 128, 0)"),

	21 "Check that the #t1 rule no longer applies.");

	22 </script>

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