forked from mirrors/gecko-dev
f1eb5aaa84
MozReview-Commit-ID: JOC1330iFnh --HG-- extra : rebase_source : 2afcb219d4a0d78f996bdc2c841456d2dccff605
35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
var tab;
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function test() {
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waitForExplicitFinish();
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tab = BrowserTestUtils.addTab(gBrowser);
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isnot(tab.getAttribute("fadein"), "true", "newly opened tab is yet to fade in");
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// Try to remove the tab right before the opening animation's first frame
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window.requestAnimationFrame(checkAnimationState);
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}
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function checkAnimationState() {
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is(tab.getAttribute("fadein"), "true", "tab opening animation initiated");
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info(window.getComputedStyle(tab).maxWidth);
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gBrowser.removeTab(tab, { animate: true });
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if (!tab.parentNode) {
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ok(true, "tab removed synchronously since the opening animation hasn't moved yet");
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finish();
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return;
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}
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info("tab didn't close immediately, so the tab opening animation must have started moving");
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info("waiting for the tab to close asynchronously");
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tab.addEventListener("transitionend", function listener(event) {
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if (event.propertyName == "max-width") {
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tab.removeEventListener("transitionend", listener);
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executeSoon(function() {
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ok(!tab.parentNode, "tab removed asynchronously");
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finish();
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});
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}
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});
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}
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