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20 lines
819 B
HTML
20 lines
819 B
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>no exception is thrown when invoking cancel() twice</title>
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<link rel="help" href="https://w3c.github.io/wake-lock/#dom-wakelockrequest-cancel">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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promise_test(async t => {
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const wakeLock = await navigator.getWakeLock("screen");
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const request = wakeLock.createRequest();
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assert_true(wakeLock.active, "the activate is true when wake lock is acquired");
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request.cancel();
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assert_false(wakeLock.active, "the activate is false when wake lock is released");
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//If the cancel() method has already been invoked on this object,
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//abort these steps, no error fired
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request.cancel();
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}, "no exception is thrown when invoking cancel() twice");
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</script>
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