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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Check that watching/unwatching multiple times works as expected
add_task(async function () {
const TEST_URL = "data:text/html;charset=utf-8,<!DOCTYPE html>foo";
const tab = await addTab(TEST_URL);
const { client, resourceCommand, targetCommand } = await initResourceCommand(
tab
);
let resources = [];
const onAvailable = _resources => {
resources.push(..._resources);
};
info("Watch for error messages resources");
await resourceCommand.watchResources([resourceCommand.TYPES.ERROR_MESSAGE], {
onAvailable,
});
ok(
resourceCommand.isResourceWatched(resourceCommand.TYPES.ERROR_MESSAGE),
"The error message resource is currently been watched."
);
is(
resources.length,
0,
"no resources were received after the first watchResources call"
);
info("Trigger an error in the page");
await ContentTask.spawn(tab.linkedBrowser, [], function frameScript() {
const document = content.document;
const scriptEl = document.createElement("script");
scriptEl.textContent = `document.unknownFunction()`;
document.body.appendChild(scriptEl);
});
await waitFor(() => resources.length === 1);
const EXPECTED_ERROR_MESSAGE =
"TypeError: document.unknownFunction is not a function";
is(
resources[0].pageError.errorMessage,
EXPECTED_ERROR_MESSAGE,
"The resource was received"
);
info("Unwatching resources…");
resourceCommand.unwatchResources([resourceCommand.TYPES.ERROR_MESSAGE], {
onAvailable,
});
ok(
!resourceCommand.isResourceWatched(resourceCommand.TYPES.ERROR_MESSAGE),
"The error message resource is no longer been watched."
);
// clearing resources
resources = [];
info("…and watching again");
await resourceCommand.watchResources([resourceCommand.TYPES.ERROR_MESSAGE], {
onAvailable,
});
ok(
resourceCommand.isResourceWatched(resourceCommand.TYPES.ERROR_MESSAGE),
"The error message resource is been watched again."
);
is(
resources.length,
1,
"we retrieve the expected number of existing resources"
);
is(
resources[0].pageError.errorMessage,
EXPECTED_ERROR_MESSAGE,
"The resource is the expected one"
);
targetCommand.destroy();
await client.close();
});