test_memoryPressure.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test for ReportingObserver + memory-pressure</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

</head>

<body>

<script type="application/javascript">

info("Testing TakeRecords() without memory-pressure");

let o = new ReportingObserver(() => {});

o.observe();

new TestingDeprecatedInterface();

let r = o.takeRecords();

is(r.length, 1, "We have 1 report");

r = o.takeRecords();

is(r.length, 0, "We have 0 reports after a takeRecords()");

info("Testing DeprecatedTestingMethod report");

new TestingDeprecatedInterface();

SpecialPowers.Services.obs.notifyObservers(null, "memory-pressure", "heap-minimize");

r = o.takeRecords();

is(r.length, 0, "We have 0 reports after a memory-pressure");

</script>

</body>

</html>