forked from LeenkxTeam/Kmake
31 lines
1.0 KiB
JavaScript
31 lines
1.0 KiB
JavaScript
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const run_test = isolated => {
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// Multiplier to convert the clamped timestamps to microseconds.
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const multiplier = 1000;
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const windowOrigin = performance.timeOrigin;
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// Clamp to at least 5 microseconds in isolated contexts and at least 100 in
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// non-isolated ones.
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const resolution = isolated ? 5 : 100;
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const create_worker = () => {
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return new Promise(resolve => {
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const workerScript = 'postMessage({timeOrigin: performance.timeOrigin})';
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const blob = new Blob([workerScript]);
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const worker = new Worker(URL.createObjectURL(blob));
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worker.addEventListener('message', event => {
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resolve(event.data.timeOrigin);
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});
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});
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};
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promise_test(async t => {
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assert_equals(self.crossOriginIsolated, isolated,
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"crossOriginIsolated is properly set");
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let prev = windowOrigin;
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let current;
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for (let i = 1; i < 100; ++i) {
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current = await create_worker();
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assert_true(current === prev || current - prev > resolution / 1000);
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prev = current;
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}
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}, 'timeOrigins are clamped.');
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};
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