forked from mirrors/gecko-dev
409d9e236e
--HG-- rename : browser/components/sessionstore/test/browser_833286_atomic_backup.js => browser/components/sessionstore/test/browser_backup_recovery.js
40 lines
1.8 KiB
JavaScript
40 lines
1.8 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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Cu.import("resource://gre/modules/Services.jsm", this);
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Cu.import("resource://gre/modules/osfile.jsm", this);
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Cu.import("resource://gre/modules/Task.jsm", this);
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const Paths = SessionFile.Paths;
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add_task(function* init() {
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// Wait until initialization is complete
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yield SessionStore.promiseInitialized;
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yield SessionFile.wipe();
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});
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add_task(function* test_upgrade_backup() {
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const PREF_UPGRADE = "browser.sessionstore.upgradeBackup.latestBuildID";
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let buildID = Services.appinfo.platformBuildID;
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info("Let's check if we create an upgrade backup");
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Services.prefs.setCharPref(PREF_UPGRADE, "");
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let contents = JSON.stringify({"browser_upgrade_backup.js": Math.random()});
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yield OS.File.writeAtomic(Paths.clean, contents);
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yield SessionFile.read(); // First call to read() initializes the SessionWorker
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yield SessionFile.write(""); // First call to write() triggers the backup
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is(Services.prefs.getCharPref(PREF_UPGRADE), buildID, "upgrade backup should be set");
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is((yield OS.File.exists(Paths.upgradeBackup)), true, "upgrade backup file has been created");
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let data = yield OS.File.read(Paths.upgradeBackup);
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is(contents, (new TextDecoder()).decode(data), "upgrade backup contains the expected contents");
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info("Let's check that we don't overwrite this upgrade backup");
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let new_contents = JSON.stringify({"something else entirely": Math.random()});
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yield OS.File.writeAtomic(Paths.clean, new_contents);
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yield SessionFile.read(); // Reinitialize the SessionWorker
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yield SessionFile.write(""); // Next call to write() shouldn't trigger the backup
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data = yield OS.File.read(Paths.upgradeBackup);
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is(contents, (new TextDecoder()).decode(data), "upgrade backup hasn't changed");
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});
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