LayoutTests/netinfo/gc-unused-listeners.html - Issue 291203002: Adds NetInfo v3 Web API to Blink.

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Side by Side Diff: LayoutTests/netinfo/gc-unused-listeners.html

Issue 291203002: Adds NetInfo v3 Web API to Blink. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@netinfo1

Patch Set: Comment typo Created 6 years, 6 months ago

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	1 <!DOCTYPE html>

	2 <head>

	3 <script src="../resources/js-test.js"></script>

	4 <script src="resources/netinfo_common.js"></script>

	5 </head>

	6 <body>

	7 <script>

	8

	9 description('Tests that unused listeners are collected.');

	10

	11 shouldBe('typeof window.internals.observeGC', '"function"',

	12 'this test requires window.internals');

	13

	14 var callback = function(e) {

	15 testFailed("Should not get here.");

	16 };

	17

	18 // Add a listener.

	19 var callbackObserver = internals.observeGC(callback);

	20 connection.addEventListener('typechange', callback);

	21 gc();

	22 shouldBeFalse('callbackObserver.wasCollected');

	23

	24 // Remove the listener and its callback reference.

	25 connection.removeEventListener('typechange', callback);

	26 callback = null;

	27 gc();

	28 shouldBeTrue('callbackObserver.wasCollected');

	29 finishJSTest();

	30

	31 </script>

	32 </body>

	33 </html>

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