76 lines
2.5 KiB
JavaScript
76 lines
2.5 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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"use strict";
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const {
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useDistinctSystemPrincipalLoader,
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releaseDistinctSystemPrincipalLoader,
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} = ChromeUtils.importESModule(
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"resource://devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs",
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{ global: "shared" }
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);
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function run_test() {
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const requester = {},
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requester2 = {};
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const loader = useDistinctSystemPrincipalLoader(requester);
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// The DevTools dedicated global forces invisibleToDebugger on its realm at
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// https://searchfox.org/mozilla-central/rev/12a18f7e112a4dcf88d8441d439b84144bfbe9a3/js/xpconnect/loader/mozJSModuleLoader.cpp#591-593
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// but this is not observable directly.
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const DevToolsSpecialGlobal = Cu.getGlobalForObject(
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ChromeUtils.importESModule(
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"resource://devtools/shared/DevToolsInfaillibleUtils.sys.mjs",
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{ global: "devtools" }
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)
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);
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const regularLoader = new DevToolsLoader();
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Assert.notStrictEqual(
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DevToolsSpecialGlobal,
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regularLoader.loader.sharedGlobal,
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"The regular loader is not using the special DevTools global"
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);
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info("Assert the key difference with the other regular loaders:");
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Assert.strictEqual(
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DevToolsSpecialGlobal,
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loader.loader.sharedGlobal,
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"The system principal loader is using the special DevTools global"
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);
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ok(loader.loader, "Loader is not destroyed before calling release");
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info("Now assert the precise behavior of release");
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releaseDistinctSystemPrincipalLoader({});
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ok(
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loader.loader,
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"Loader is still not destroyed after calling release with another requester"
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);
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releaseDistinctSystemPrincipalLoader(requester);
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ok(
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!loader.loader,
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"Loader is destroyed after calling release with the right requester"
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);
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info("Now test the behavior with two concurrent usages");
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const loader2 = useDistinctSystemPrincipalLoader(requester);
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Assert.notEqual(loader, loader2, "We get a new loader instance");
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Assert.strictEqual(
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DevToolsSpecialGlobal,
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loader2.loader.sharedGlobal,
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"The new system principal loader is also using the special DevTools global"
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);
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const loader3 = useDistinctSystemPrincipalLoader(requester2);
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Assert.equal(loader2, loader3, "The two loader last loaders are shared");
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releaseDistinctSystemPrincipalLoader(requester);
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ok(loader2.loader, "Loader isn't destroy on the first call to destroy");
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releaseDistinctSystemPrincipalLoader(requester2);
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ok(!loader2.loader, "Loader is destroyed on the second call to destroy");
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}
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