31 lines
970 B
JavaScript
31 lines
970 B
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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// HeapSnapshot.prototype.creationTime returns the expected time.
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function waitForThirtyMilliseconds() {
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const start = Date.now();
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while (Date.now() - start < 30) ;
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}
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function run_test() {
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const start = Date.now() * 1000;
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do_print("start = " + start);
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// Because Date.now() is less precise than the snapshot's time stamp, give it
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// a little bit of head room. Additionally, WinXP's timer only has granularity
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// of +/- 15ms.
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waitForThirtyMilliseconds();
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const path = ChromeUtils.saveHeapSnapshot({ runtime: true });
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waitForThirtyMilliseconds();
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const end = Date.now() * 1000;
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do_print("end = " + end);
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const snapshot = ChromeUtils.readHeapSnapshot(path);
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do_print("snapshot.creationTime = " + snapshot.creationTime);
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ok(snapshot.creationTime >= start);
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ok(snapshot.creationTime <= end);
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}
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