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<!doctype html>
<html>
<head>
<title>Bug 1150253 - Sanity test for the SpiderMonkey Debugger API's onGarbageCollection hook</title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js">
</script>
</head>
<body xmlns="http://www.w3.org/1999/xhtml">
<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1150253"
target="_blank">Mozilla Bug 1150253</a>
<script type="application/javascript">
SimpleTest.waitForExplicitFinish();
const { gc } = Cu.getJSTestingFunctions();
// Instantiate `Debugger` in a sandbox as Debugger requires to be created
// in a compartment different than the debuggee.
let sandbox = Cu.Sandbox(
Components.Constructor("@mozilla.org/systemprincipal;1", "nsIPrincipal")(),
{
freshCompartment: true,
wantGlobalProperties: ["ChromeUtils"],
}
);
Cu.evalInSandbox(`
const { addDebuggerToGlobal } = ChromeUtils.importESModule(
'resource://gre/modules/jsdebugger.sys.mjs'
);
addDebuggerToGlobal(globalThis);
`, sandbox
);
const dbg = new sandbox.Debugger(this);
dbg.memory.onGarbageCollection = function (data) {
// Don't keep calling this hook after we finish.
dbg.memory.onGarbageCollection = undefined;
dbg.removeAllDebuggees();
ok(data, "The onGarbageCollection hook was fired.");
SimpleTest.finish();
};
gc();
</script>
</body>
</html>
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