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Diffstat (limited to '')
-rw-r--r-- | devtools/shared/heapsnapshot/tests/xpcshell/test_HeapAnalyses_getCreationTime_01.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapAnalyses_getCreationTime_01.js b/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapAnalyses_getCreationTime_01.js new file mode 100644 index 0000000000..505e1a1dc6 --- /dev/null +++ b/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapAnalyses_getCreationTime_01.js @@ -0,0 +1,57 @@ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ +"use strict"; + +// Test that the HeapAnalyses{Client,Worker} can get a HeapSnapshot's +// creation time. + +function waitForThirtyMilliseconds() { + const start = Date.now(); + while (Date.now() - start < 30) { + // do nothing + } +} + +const BREAKDOWN = { + by: "internalType", + then: { by: "count", count: true, bytes: true }, +}; + +add_task(async function () { + const client = new HeapAnalysesClient(); + const start = Date.now() * 1000; + + // Because Date.now() is less precise than the snapshot's time stamp, give it + // a little bit of head room. Additionally, WinXP's timers have a granularity + // of only +/-15 ms. + waitForThirtyMilliseconds(); + const snapshotFilePath = saveNewHeapSnapshot(); + waitForThirtyMilliseconds(); + const end = Date.now() * 1000; + + await client.readHeapSnapshot(snapshotFilePath); + ok(true, "Should have read the heap snapshot"); + + let threw = false; + try { + await client.getCreationTime("/not/a/real/path", { + breakdown: BREAKDOWN, + }); + } catch (_) { + threw = true; + } + ok(threw, "getCreationTime should throw when snapshot does not exist"); + + const time = await client.getCreationTime(snapshotFilePath, { + breakdown: BREAKDOWN, + }); + + dumpn("Start = " + start); + dumpn("End = " + end); + dumpn("Time = " + time); + + ok(time >= start, "creation time occurred after start"); + ok(time <= end, "creation time occurred before end"); + + client.destroy(); +}); |