firefox-main/toolkit/components/extensions/test/xpcshell/test_ext_contentscript_structured_clone.js (file symbol)

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Test Info: Warnings

"use strict";
const server = createHttpServer({ hosts: ["example.com"] });
server.registerPathHandler("/test", (request, response) => {
response.setStatusLine(request.httpVersion, 200, "OK");
response.setHeader("Content-Type", "text/html", false);
response.write("<!DOCTYPE html><html><body></body></html>");
});
async function testStructuredClone(legacyPref) {
Services.prefs.setBoolPref(
"extensions.webextensions.legacyStructuredCloneBehavior",
legacyPref
);
let extension = ExtensionTestUtils.loadExtension({
manifest: {
content_scripts: [
{
matches: ["http://example.com/test"],
js: ["cs.js"],
},
],
},
files: {
"cs.js"() {
/* globals cloneInto, structuredClone */
browser.test.assertTrue(
location.hash == "#true" || location.hash == "#false",
"unexpected legacy pref value"
);
function isWindow(obj, desc) {
browser.test.assertTrue(
obj instanceof window.Object,
`${desc}: is a window.Object`
);
browser.test.assertFalse(
obj instanceof Object,
`${desc}: is not a sandbox.Object`
);
}
function isSandbox(obj, desc) {
browser.test.assertTrue(
obj instanceof Object,
`${desc}: is a sandbox.Object`
);
browser.test.assertFalse(
obj instanceof window.Object,
`${desc}: is not a window.Object`
);
}
let sbObj = { a: 1 };
let winObj = cloneInto(sbObj, window);
let winBlob = new Blob(["test"]);
let sbBlob = cloneInto(winBlob, globalThis);
// Confirm that our initial objects are in the expected globals.
// NOTE: The original blob was constructed in the Window (as the 'Blob'
// constructor is provided by Window).
isWindow(winObj, "winObj");
isSandbox(sbObj, "sbObj");
isWindow(winBlob, "winBlob");
isSandbox(sbBlob, "sbBlob");
// structuredClone(obj) should always clone into the sandbox
isSandbox(structuredClone(winObj), "structuredClone(winObj)");
isSandbox(
globalThis.structuredClone(winObj),
"globalThis.structuredClone(winObj)"
);
isSandbox(structuredClone(sbObj), "structuredClone(sbObj)");
isSandbox(
globalThis.structuredClone(sbObj),
"globalThis.structuredClone(sbObj)"
);
// structuredClone(blob) depends on the legacy pref
let blobAssertion = location.hash == "#true" ? isWindow : isSandbox;
blobAssertion(structuredClone(winBlob), "structuredClone(winBlob)");
blobAssertion(
globalThis.structuredClone(winBlob),
"globalThis.structuredClone(winBlob)"
);
blobAssertion(structuredClone(sbBlob), "structuredClone(sbBlob)");
blobAssertion(
globalThis.structuredClone(sbBlob),
"globalThis.structuredClone(sbBlob)"
);
// window.structuredClone(...) always clones into the window global
isWindow(
window.structuredClone(winObj),
"window.structuredClone(winObj)"
);
isWindow(
window.structuredClone(sbObj),
"window.structuredClone(sbObj)"
);
isWindow(
window.structuredClone(winBlob),
"window.structuredClone(winBlob)"
);
isWindow(
window.structuredClone(sbBlob),
"window.structuredClone(sbBlob)"
);
// Also test the behaviour of returned xrays. In non-window cases,
// there should be no xrays, but when calling window.structuredClone
// there are xrays, which will prevent adding function properties.
structuredClone(winObj).x = function () {};
globalThis.structuredClone(winObj).x = function () {};
browser.test.assertThrows(
() => (window.structuredClone(winObj).x = function () {}),
/Not allowed to define cross-origin object as property/,
"window.structuredClone(winObj) should be an xray wrapper"
);
structuredClone(sbObj).x = function () {};
globalThis.structuredClone(sbObj).x = function () {};
browser.test.assertThrows(
() => (window.structuredClone(sbObj).x = function () {}),
/Not allowed to define cross-origin object as property/,
"window.structuredClone(sbObj) should be an xray wrapper"
);
browser.test.sendMessage("done");
},
},
});
await extension.startup();
let contentPage = await ExtensionTestUtils.loadContentPage(
);
await extension.awaitMessage("done");
await contentPage.close();
await extension.unload();
}
add_task(async function test_structuredClone_legacy() {
await testStructuredClone(true);
});
add_task(async function test_structuredClone_nonlegacy() {
await testStructuredClone(false);
});