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Diffstat (limited to '')
-rw-r--r-- | browser/components/newtab/test/xpcshell/test_AboutHomeStartupCacheChild.js | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/browser/components/newtab/test/xpcshell/test_AboutHomeStartupCacheChild.js b/browser/components/newtab/test/xpcshell/test_AboutHomeStartupCacheChild.js new file mode 100644 index 0000000000..ce1ee48caa --- /dev/null +++ b/browser/components/newtab/test/xpcshell/test_AboutHomeStartupCacheChild.js @@ -0,0 +1,33 @@ +/* Any copyright is dedicated to the Public Domain. +http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +const { AboutHomeStartupCacheChild } = ChromeUtils.importESModule( + "resource:///modules/AboutNewTabService.sys.mjs" +); + +/** + * Tests that AboutHomeStartupCacheChild will terminate its PromiseWorker + * on memory-pressure, and that a new PromiseWorker can then be generated on + * demand. + */ +add_task(async function test_memory_pressure() { + AboutHomeStartupCacheChild.init(); + + let worker = AboutHomeStartupCacheChild.getOrCreateWorker(); + Assert.ok(worker, "Should have been able to get the worker."); + + Assert.equal( + worker, + AboutHomeStartupCacheChild.getOrCreateWorker(), + "The worker is cached and re-usable." + ); + + Services.obs.notifyObservers(null, "memory-pressure", "heap-minimize"); + + let newWorker = AboutHomeStartupCacheChild.getOrCreateWorker(); + Assert.notEqual(worker, newWorker, "Old worker should have been replaced."); + + AboutHomeStartupCacheChild.uninit(); +}); |