forked from mirrors/gecko-dev
69dfb519c2
Use 'globalThis' instead of 'this' when trying to attach a debugger to the current global to avoid subtle footguns with the varied definitions of 'this'. The debugger interface needs a true GlobalObject so this is much clearer. In particular, this is a problem in test_nativewrappers.js when the test runs in strict mode since the 'this' in the test function is no long implicitly the global. Differential Revision: https://phabricator.services.mozilla.com/D157544
48 lines
1.4 KiB
HTML
48 lines
1.4 KiB
HTML
<!doctype html>
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<html>
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<head>
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<title>Bug 1150253 - Sanity test for the SpiderMonkey Debugger API's onGarbageCollection hook</title>
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<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js">
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</script>
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</head>
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<body xmlns="http://www.w3.org/1999/xhtml">
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<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1150253"
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target="_blank">Mozilla Bug 1150253</a>
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<script type="application/javascript">
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SimpleTest.waitForExplicitFinish();
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const { gc } = Cu.getJSTestingFunctions();
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// Instantiate `Debugger` in a sandbox as Debugger requires to be created
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// in a compartment different than the debuggee.
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let sandbox = Cu.Sandbox(
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Components.Constructor("@mozilla.org/systemprincipal;1", "nsIPrincipal")(),
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{
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freshCompartment: true,
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wantGlobalProperties: ["ChromeUtils"],
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}
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);
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Cu.evalInSandbox(`
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const { addDebuggerToGlobal } = ChromeUtils.import(
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'resource://gre/modules/jsdebugger.jsm'
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);
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addDebuggerToGlobal(globalThis);
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`, sandbox
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);
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const dbg = new sandbox.Debugger(this);
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dbg.memory.onGarbageCollection = function (data) {
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// Don't keep calling this hook after we finish.
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dbg.memory.onGarbageCollection = undefined;
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dbg.removeAllDebuggees();
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ok(data, "The onGarbageCollection hook was fired.");
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SimpleTest.finish();
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};
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gc();
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</script>
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</body>
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</html>
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