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"use strict";
// Tests SpecialPowersForProcess spawn() in browser chrome mochitests.
// An xpcshell version of this test exists at
// testing/mochitest/tests/Harness_sanity/test_SpecialPowersForProcessSpawn.js
const { SpecialPowersForProcess } = ChromeUtils.importESModule(
);
const scope = this;
const interceptedMessages = [];
add_setup(() => {
const orig_record = SimpleTest.record;
SimpleTest.record = (condition, name, diag, stack, expected) => {
if (name?.startsWith?.("CHECK_THIS:")) {
interceptedMessages.push(name);
}
return orig_record(condition, name, diag, stack, expected);
};
const orig_info = SimpleTest.info;
SimpleTest.info = msg => {
if (msg?.startsWith?.("CHECK_THIS:")) {
interceptedMessages.push(msg);
}
return orig_info(msg);
};
registerCleanupFunction(() => {
SimpleTest.record = orig_record;
SimpleTest.info = orig_info;
});
});
// Tests that SpecialPowersForProcess can spawn() in processes that the test
// grabbed off a contentPage, even after the original page navigated/closed.
add_task(async function test_SpecialPowersForProcess_spawn() {
interceptedMessages.length = 0;
const tab = await BrowserTestUtils.openNewForegroundTab(
gBrowser,
);
await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
Assert.equal(
await this.content.wrappedJSObject.loadedPromise,
"frames_all_loaded",
"All (cross-origin) frames have finished loading"
);
});
const browsingContext = tab.linkedBrowser.browsingContext;
const proc1 = browsingContext.children[0].currentWindowGlobal.domProcess;
const proc2 = browsingContext.children[1].currentWindowGlobal.domProcess;
Assert.equal(proc1, proc2, "The two child frames share the same process");
const processBoundSpecialPowers = new SpecialPowersForProcess(scope, proc1);
await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
info("ContentPage.spawn: Change frame1 process");
const frame1 = this.content.document.getElementById("frame1");
Assert.throws(
() => frame1.contentDocument.location.search,
/TypeError: (can't access property "location", )?frame1.contentDocument is null/,
"ContentPage.spawn: Assert, cannot read cross-origin content"
);
await new Promise(resolve => {
frame1.onload = resolve;
frame1.src = "/dummy?3";
});
// Verify that it is same-origin now.
Assert.equal(
frame1.contentDocument.location.search,
"?3",
"CHECK_THIS: ContentPage.spawn: Assert, frame1 is now same-origin"
);
info("CHECK_THIS: ContentPage.spawn: remove frame1");
frame1.remove();
// spawn() implementation has special logic to route Assert messages;
// Prepare to check that Assert can be called after spawn() returns.
this.content.assertAfterSpawnReturns = () => {
Assert.ok(true, "CHECK_THIS: ContentPage.spawn: asssert after return");
};
});
await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
this.content.assertAfterSpawnReturns();
});
Assert.equal(browsingContext.children.length, 1, "frame1 was removed");
// Now frame1 has navigated (and switched processes) and removed, so if the
// SpecialPowers implementation were to rely on JSWindowActor, then that
// would break if we try to interact with it at this point. Check that we
// can connect just fine (because JSProcessActor should be used instead).
await processBoundSpecialPowers.spawn([], () => {
info("CHECK_THIS: process-bound spawn: still works");
Assert.equal(
typeof content,
"undefined",
"CHECK_THIS: process-bound spawn: no content global"
);
// Need a shared object that outlives this SpecialPowersSandbox instance:
const sharedGlobalObj = Cu.getGlobalForObject(Services);
// spawn() implementation has special logic to route Assert messages;
// Prepare to check that Assert can be called after spawn() returns.
sharedGlobalObj.assertAfterProcessBoundSpawnReturns = () => {
Assert.ok(true, "CHECK_THIS: process-bound spawn: asssert after return");
};
});
await processBoundSpecialPowers.spawn([], () => {
// Shared object that outlived the previous SpecialPowersSandbox instance:
const sharedGlobalObj = Cu.getGlobalForObject(Services);
sharedGlobalObj.assertAfterProcessBoundSpawnReturns();
delete sharedGlobalObj.assertAfterProcessBoundSpawnReturns;
});
BrowserTestUtils.removeTab(tab);
await processBoundSpecialPowers.destroy();
Assert.throws(
() => processBoundSpecialPowers.spawn([], () => {}),
/this.actor is null/,
"Cannot spawn after destroy()"
);
const observedMessages = interceptedMessages.splice(0);
Assert.deepEqual(
observedMessages,
[
`CHECK_THIS: ContentPage.spawn: Assert, frame1 is now same-origin - "?3" == "?3"`,
"CHECK_THIS: ContentPage.spawn: remove frame1",
"CHECK_THIS: ContentPage.spawn: asssert after return - true == true",
"CHECK_THIS: process-bound spawn: still works",
`CHECK_THIS: process-bound spawn: no content global - "undefined" == "undefined"`,
"CHECK_THIS: process-bound spawn: asssert after return - true == true",
],
"Observed calls through spawn"
);
});