forked from mirrors/gecko-dev
48 lines
1.1 KiB
JavaScript
48 lines
1.1 KiB
JavaScript
var tab;
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function test() {
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waitForExplicitFinish();
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// Force-enable tab animations
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gReduceMotionOverride = false;
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tab = BrowserTestUtils.addTab(gBrowser);
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isnot(
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tab.getAttribute("fadein"),
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"true",
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"newly opened tab is yet to fade in"
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);
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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(
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true,
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"tab removed synchronously since the opening animation hasn't moved yet"
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);
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finish();
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return;
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}
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info(
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"tab didn't close immediately, so the tab opening animation must have started moving"
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);
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info("waiting for the tab to close asynchronously");
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tab.addEventListener(
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"TabAnimationEnd",
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function 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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{ once: true }
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);
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}
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