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
123 lines
3.4 KiB
JavaScript
123 lines
3.4 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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// Test the ChromeUtils interface.
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// eslint-disable-next-line
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if (typeof Debugger != "function") {
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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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}
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function run_test() {
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ok(ChromeUtils, "Should be able to get the ChromeUtils interface");
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testBadParameters();
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testGoodParameters();
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do_test_finished();
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}
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function testBadParameters() {
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot(),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if arguments aren't passed in."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot(null),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if boundaries isn't an object."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({}),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if the boundaries object doesn't have any properties."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({ runtime: true, globals: [this] }),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if the boundaries object has more than one property."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({ debugger: {} }),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if the debuggees object is not a Debugger object"
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({ globals: [{}] }),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if the globals array contains non-global objects."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({ runtime: false }),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if runtime is supplied and is not true."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({ globals: null }),
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/TypeError:.*can't be converted to a sequence/,
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"Should throw if globals is not an object."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({ globals: {} }),
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/TypeError:.*can't be converted to a sequence/,
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"Should throw if globals is not an array."
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);
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Assert.throws(
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() => ChromeUtils.saveHeapSnapshot({ debugger: Debugger.prototype }),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if debugger is the Debugger.prototype object."
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);
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Assert.throws(
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() =>
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ChromeUtils.saveHeapSnapshot({
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get globals() {
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return [this];
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},
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}),
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/NS_ERROR_ILLEGAL_VALUE/,
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"Should throw if boundaries property is a getter."
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);
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}
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const makeNewSandbox = () =>
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Cu.Sandbox(CC("@mozilla.org/systemprincipal;1", "nsIPrincipal")());
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function testGoodParameters() {
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const sandbox = makeNewSandbox();
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let dbg = new Debugger(sandbox);
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ChromeUtils.saveHeapSnapshot({ debugger: dbg });
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ok(true, "Should be able to save a snapshot for a debuggee global.");
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dbg = new Debugger();
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const sandboxes = Array(10)
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.fill(null)
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.map(makeNewSandbox);
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sandboxes.forEach(sb => dbg.addDebuggee(sb));
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ChromeUtils.saveHeapSnapshot({ debugger: dbg });
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ok(true, "Should be able to save a snapshot for many debuggee globals.");
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dbg = new Debugger();
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ChromeUtils.saveHeapSnapshot({ debugger: dbg });
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ok(true, "Should be able to save a snapshot with no debuggee globals.");
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ChromeUtils.saveHeapSnapshot({ globals: [this] });
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ok(true, "Should be able to save a snapshot for a specific global.");
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ChromeUtils.saveHeapSnapshot({ runtime: true });
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ok(true, "Should be able to save a snapshot of the full runtime.");
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}
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