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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
const TEST_PAGE =
"https://example.com/document-builder.sjs?html=<meta charset=utf8></meta>";
add_task(async function test_cached_javascript_errors() {
gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser, TEST_PAGE);
await BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);
await createScriptNode(`(() => {throw "error1"})()`);
await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async () => {
const innerWindowId = content.windowGlobalChild.innerWindowId;
const { ConsoleListener } = ChromeUtils.importESModule(
"chrome://remote/content/shared/listeners/ConsoleListener.sys.mjs"
);
const listener = new ConsoleListener(innerWindowId);
const errors = [];
// Do not push the whole error object in the array. It would create a strong
// reference preventing from reproducing GC-related bugs.
const onError = (evtName, error) => errors.push(error.message);
listener.on("error", onError);
const waitForMessage = listener.once("error");
listener.startListening();
const error = await waitForMessage;
is(error.message, "uncaught exception: error1");
is(errors.length, 1);
listener.stopListening();
content.backup = { listener, errors, onError };
});
// Force a GC to check that old cached messages which have been garbage
// collected are not re-displayed.
await doGC();
await createScriptNode(`(() => {throw "error2"})()`);
await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async () => {
const { listener, errors, onError } = content.backup;
const waitForMessage = listener.once("error");
listener.startListening();
const { message } = await waitForMessage;
is(message, "uncaught exception: error2");
is(errors.length, 2);
listener.off("error", onError);
listener.destroy();
});
info("Reload the current tab and check only new messages are emitted");
await BrowserTestUtils.reloadTab(gBrowser.selectedTab);
await createScriptNode(`(() => {throw "error3"})()`);
await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async () => {
const innerWindowId = content.windowGlobalChild.innerWindowId;
const { ConsoleListener } = ChromeUtils.importESModule(
"chrome://remote/content/shared/listeners/ConsoleListener.sys.mjs"
);
const listener = new ConsoleListener(innerWindowId);
const errors = [];
const onError = (evtName, error) => errors.push(error.message);
listener.on("error", onError);
const waitForMessage = listener.once("error");
listener.startListening();
const error = await waitForMessage;
is(error.message, "uncaught exception: error3");
is(errors.length, 1);
listener.off("error", onError);
listener.destroy();
});
gBrowser.removeTab(gBrowser.selectedTab);
});
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