forked from mirrors/gecko-dev
47 lines
2 KiB
JavaScript
47 lines
2 KiB
JavaScript
Cu.import("resource://gre/modules/Preferences.jsm");
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function test() {
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const prefNewName = "browser.newpref.fake";
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Assert.ok(!Preferences.has(prefNewName), "pref should not exist");
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const prefExistingName = "extensions.hotfix.id";
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Assert.ok(Preferences.has(prefExistingName), "pref should exist");
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Assert.ok(!Preferences.isSet(prefExistingName), "pref should not be user-set");
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let prefExistingOriginalValue = Preferences.get(prefExistingName);
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registerCleanupFunction(function() {
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Preferences.set(prefExistingName, prefExistingOriginalValue);
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Services.prefs.deleteBranch(prefNewName);
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});
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// 1. do nothing on an inexistent pref
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MozSelfSupport.resetPref(prefNewName);
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Assert.ok(!Preferences.has(prefNewName), "pref should still not exist");
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// 2. creation of a new pref
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Preferences.set(prefNewName, 10);
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Assert.ok(Preferences.has(prefNewName), "pref should exist");
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Assert.equal(Preferences.get(prefNewName), 10, "pref value should be 10");
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MozSelfSupport.resetPref(prefNewName);
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Assert.ok(!Preferences.has(prefNewName), "pref should not exist any more");
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// 3. do nothing on an unchanged existing pref
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MozSelfSupport.resetPref(prefExistingName);
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Assert.ok(Preferences.has(prefExistingName), "pref should still exist");
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Assert.equal(Preferences.get(prefExistingName), prefExistingOriginalValue, "pref value should be the same as original");
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// 4. change the value of an existing pref
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Preferences.set(prefExistingName, "anyone@mozilla.org");
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Assert.ok(Preferences.has(prefExistingName), "pref should exist");
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Assert.equal(Preferences.get(prefExistingName), "anyone@mozilla.org", "pref value should have changed");
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MozSelfSupport.resetPref(prefExistingName);
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Assert.ok(Preferences.has(prefExistingName), "pref should still exist");
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Assert.equal(Preferences.get(prefExistingName), prefExistingOriginalValue, "pref value should be the same as original");
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// 5. delete an existing pref
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// deleteBranch is implemented in such a way that
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// clearUserPref can't undo its action
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// see discussion in bug 1075160
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}
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