LayoutTests/compositing/sticky-compositing.html - Issue 24210010: Add layout test to verify that compositing is sticky.

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Unified Diff: LayoutTests/compositing/sticky-compositing.html

Issue 24210010: Add layout test to verify that compositing is sticky. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Created 7 years, 3 months ago

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Index: LayoutTests/compositing/sticky-compositing.html

diff --git a/LayoutTests/compositing/sticky-compositing.html b/LayoutTests/compositing/sticky-compositing.html

new file mode 100644

index 0000000000000000000000000000000000000000..9b5d2679fff5b7887d8781b3a2ae86cc7e1ac858

--- /dev/null

+++ b/LayoutTests/compositing/sticky-compositing.html

@@ -0,0 +1,36 @@

+<body>

+ First layer tree:

+

+ Second layer tree:

+

+ Third layer tree:

+

+ <script>

+ testRunner.dumpAsText();

+ // Dump the tree (should be empty because compositing hasn't been triggered)

+ if (window.testRunner)

+ document.getElementById('tree1').innerHTML = window.internals.layerTreeAsText(document);

+ // Trigger compositing by adding a div with translateZ(0)

+ var compositing_div = document.createElement("div");

+ compositing_div.id = "compositing_div";

+ compositing_div.style.webkitTransform = "translateZ(0)";

+ compositing_div.innerText = "compositing trigger";

+ document.body.appendChild(compositing_div);

+ // Dump the tree (should be filled because compositing is triggered)

+ if (window.testRunner)

+ document.getElementById('tree2').innerHTML = window.internals.layerTreeAsText(document);

+ // Remove the compositing trigger.

+ document.body.removeChild(compositing_div);

+ delete compositing_div;

+ // Dump the tree (should stay filled because compositing is sticky, even though the trigger is gone.)

+ if (window.testRunner) {

+ document.getElementById('tree3').innerHTML = window.internals.layerTreeAsText(document);

+ testRunner.notifyDone();

+ }

+ </script>

+</body>

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