REGRESSION(r277437):[ macOS ] inspector/unit-tests/heap-snapshot-collection-event.html is a constant text failure

• Component: Web Inspector
• Status: RESOLVED FIXED

[Robert Jenner]

inspector/unit-tests/heap-snapshot-collection-event.html

is a constant text failure on macOS. 

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=media%2Fmodern-media-controls%2Fpip-support%2Fpip-support-enabled.html

TEXT DIFF:
 == Running test suite: HeapSnapshot.CollectionEvent
 -- Running test case: HeapSnapshot
 PASS: Should not have an error creating a snapshot.
-PASS: Should create HeapSnapshotProxy snapshot.
+Uncaught exception in Inspector page: SyntaxError: JSON Parse error: Single quotes (') are not allowed in JSON [HeapSnapshot.js:92:30]
 
--- Running test case: HeapSnapshotCollectionEvent
-PASS: Should not have an error creating a snapshot.
-PASS: Received HeapSnapshot.CollectionEvent.
-PASS: Collection should include at least 200 nodes (100 objects and 100 strings).
-PASS: Collection should affect the first snapshot.
 
--- Running test case: HeapSnapshot.prototype.update
-PASS: 0 Objects were dead before.
-PASS: At least 100 Objects are dead after.
-PASS: 0 strings were dead before.
-PASS: At least 100 strings are dead after.
-

[Radar WebKit Bug Importer]

<rdar://problem/78000283>

[Robert Jenner]

Ignore the history link above. I accidentally pasted the wrong on in. Here is the correct history link:
https://results.webkit.org/?suite=layout-tests&test=inspector%2Funit-tests%2Fheap-snapshot-collection-event.html

[Robert Jenner]

I have reproduced the failure at BigSur Production ToT using the following test:

run-webkit-tests inspector/unit-tests/heap-snapshot-collection-event.html --iterations 100 -f

It failed all 100 times when running that test. The history shows a clear regression point of r277437, and I was able to confirm it. The above test passes at r277436, but fails at r277437.

[Alexey Proskuryakov]

Looks like this got fixed in https://trac.webkit.org/changeset/277480