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author | Matt A. Tobin <email@mattatobin.com> | 2020-02-22 17:32:39 -0500 |
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committer | Matt A. Tobin <email@mattatobin.com> | 2020-02-22 17:32:39 -0500 |
commit | 4e2e9be6abed3225406b466099e397acc0f914d2 (patch) | |
tree | 023551018892b8e76ae80e63a08d9d6a27c21a77 /dom/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js | |
parent | a7888b8cf20691a4090715ab9b055ec3cb75f5e8 (diff) | |
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Reclassify heapsnapshot and nsJSInspector as not part of devtools
This resolves Issue #316
Diffstat (limited to 'dom/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js')
-rw-r--r-- | dom/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/dom/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js new file mode 100644 index 000000000..0d08fea16 --- /dev/null +++ b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js @@ -0,0 +1,30 @@ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ + +// HeapSnapshot.prototype.creationTime returns the expected time. + +function waitForThirtyMilliseconds() { + const start = Date.now(); + while (Date.now() - start < 30) ; +} + +function run_test() { + const start = Date.now() * 1000; + do_print("start = " + start); + + // Because Date.now() is less precise than the snapshot's time stamp, give it + // a little bit of head room. Additionally, WinXP's timer only has granularity + // of +/- 15ms. + waitForThirtyMilliseconds(); + const path = ChromeUtils.saveHeapSnapshot({ runtime: true }); + waitForThirtyMilliseconds(); + + const end = Date.now() * 1000; + do_print("end = " + end); + + const snapshot = ChromeUtils.readHeapSnapshot(path); + do_print("snapshot.creationTime = " + snapshot.creationTime); + + ok(snapshot.creationTime >= start); + ok(snapshot.creationTime <= end); +} |