mozilla-central/toolkit/components/extensions/test/xpcshell/test_ext_adoption_with_private_field_xrays.js (file symbol)

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Test Info: Warnings

"use strict";
// ExtensionContent.sys.mjs needs to know when it's running from xpcshell,
// to use the right timeout for content scripts executed at document_idle.
ExtensionTestUtils.mockAppInfo();
const server = createHttpServer();
server.registerDirectory("/data/", do_get_file("data"));
const BASE_URL = `http://localhost:${server.identity.primaryPort}/data`;
add_task(async function test_contentscript_private_field_xrays() {
async function contentScript() {
let node = window.document.createElement("div");
class Base {
constructor(o) {
return o;
}
}
class A extends Base {
#x = 5;
static gx(o) {
return o.#x;
}
static sx(o, v) {
o.#x = v;
}
}
browser.test.log(A.toString());
// Stamp node with A's private field.
new A(node);
browser.test.log("stamped");
browser.test.assertEq(
A.gx(node),
5,
"We should be able to see our expando private field"
);
browser.test.log("Read");
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have our private field"
);
browser.test.log("threw");
window.frames[0].document.adoptNode(node);
browser.test.log("adopted");
browser.test.assertEq(
A.gx(node),
5,
"Adoption should not change expando private field"
);
browser.test.log("read");
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Adoption should really not change expandos private fields"
);
browser.test.log("threw2");
// Repeat but now with an object that has a reference from the
// window it's being cloned into.
node = window.document.createElement("div");
// Stamp node with A's private field.
new A(node);
A.sx(node, 6);
browser.test.assertEq(
A.gx(node),
6,
"We should be able to see our expando (2)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have exxpando. (2)"
);
window.frames[0].wrappedJSObject.incoming = node.wrappedJSObject;
window.frames[0].document.adoptNode(node);
browser.test.assertEq(
A.gx(node),
6,
"We should be able to see our expando (3)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have exxpando. (3)"
);
// Repeat once more, now with an expando that refers to the object itself
node = window.document.createElement("div");
new A(node);
A.sx(node, node);
browser.test.assertEq(
A.gx(node),
node,
"We should be able to see our self-referential expando (4)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have exxpando. (4)"
);
window.frames[0].document.adoptNode(node);
browser.test.assertEq(
A.gx(node),
node,
"Adoption should not change our self-referential expando (4)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Adoption should not change underlying object. (4)"
);
// And test what happens if we now set document.domain and cause
// wrapper remapping.
let doc = window.frames[0].document;
// eslint-disable-next-line no-self-assign
doc.domain = doc.domain;
browser.test.notifyPass("privateFieldXRayAdoption");
}
let extension = ExtensionTestUtils.loadExtension({
manifest: {
content_scripts: [
{
js: ["content_script.js"],
},
],
},
files: {
"content_script.js": contentScript,
},
});
await extension.startup();
let contentPage = await ExtensionTestUtils.loadContentPage(
`${BASE_URL}/file_toplevel.html`
);
await extension.awaitFinish("privateFieldXRayAdoption");
await contentPage.close();
await extension.unload();
});