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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
/**
* Tests that if there's a substantial delay in getting the cache
* streams from the privileged about content process for any reason
* during shutdown, that we timeout and let the AsyncShutdown proceed,
* rather than letting it block until AsyncShutdown causes a shutdown
* hang crash.
*/
add_task(async function test_shutdown_timeout() {
await withFullyLoadedAboutHome(async browser => {
// First, make sure the cache is populated so that later on, after
// the timeout, simulateRestart doesn't complain about not finding
// a pre-existing cache. This complaining only happens if this test
// is run in isolation.
await clearCache();
await simulateRestart(browser);
// Next, manually shutdown the AboutHomeStartupCacheChild so that
// it doesn't respond to requests to the cache streams.
await SpecialPowers.spawn(browser, [], async () => {
let { AboutHomeStartupCacheChild } = ChromeUtils.importESModule(
);
AboutHomeStartupCacheChild.uninit();
});
// Then, manually dirty the cache state so that we attempt to write
// on shutdown.
AboutHomeStartupCache.onPreloadedNewTabMessage();
await simulateRestart(browser, { expectTimeout: true });
Assert.ok(
true,
"We reached here, which means shutdown didn't block forever."
);
// Clear the cache so that we're not in a half-persisted state.
await clearCache();
});
});