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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /devtools/shared/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'devtools/shared/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js')
-rw-r--r-- | devtools/shared/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js b/devtools/shared/heapsnapshot/tests/unit/test_HeapSnapshot_creationTime_01.js new file mode 100644 index 000000000..0d08fea16 --- /dev/null +++ b/devtools/shared/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); +} |