From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- modules/libpref/test/unit/test_stickyprefs.js | 196 ++++++++++++++++++++++++++ 1 file changed, 196 insertions(+) create mode 100644 modules/libpref/test/unit/test_stickyprefs.js (limited to 'modules/libpref/test/unit/test_stickyprefs.js') diff --git a/modules/libpref/test/unit/test_stickyprefs.js b/modules/libpref/test/unit/test_stickyprefs.js new file mode 100644 index 0000000000..d344d208ab --- /dev/null +++ b/modules/libpref/test/unit/test_stickyprefs.js @@ -0,0 +1,196 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ */ + +const ps = Services.prefs; + +// It is necessary to manually disable `xpc::IsInAutomation` since +// `resetPrefs` will flip the preference to re-enable `once`-synced +// preference change assertions, and also change the value of those +// preferences. +Services.prefs.setBoolPref( + "security.turn_off_all_security_so_that_viruses_can_take_over_this_computer", + false +); + +// A little helper to reset the service and load one pref file. +function resetAndLoadDefaults() { + ps.resetPrefs(); + ps.readDefaultPrefsFromFile(do_get_file("data/testPrefSticky.js")); +} + +// A little helper to reset the service and load two pref files. +function resetAndLoadAll() { + ps.resetPrefs(); + ps.readDefaultPrefsFromFile(do_get_file("data/testPrefSticky.js")); + ps.readUserPrefsFromFile(do_get_file("data/testPrefStickyUser.js")); +} + +// A little helper that saves the current state to a file in the profile +// dir, then resets the service and re-reads the file it just saved. +// Used to test what gets actually written - things the pref service decided +// not to write don't exist at all after this call. +function saveAndReload() { + let file = do_get_profile(); + file.append("prefs.js"); + ps.savePrefFile(file); + + // Now reset the pref service and re-read what we saved. + ps.resetPrefs(); + + // Hack alert: on Windows nsLocalFile caches the size of savePrefFile from + // the .create() call above as 0. We call .exists() to reset the cache. + file.exists(); + + ps.readUserPrefsFromFile(file); +} + +// A sticky pref should not be written if the value is unchanged. +add_test(function notWrittenWhenUnchanged() { + resetAndLoadDefaults(); + Assert.strictEqual(ps.getBoolPref("testPref.unsticky.bool"), true); + Assert.strictEqual(ps.getBoolPref("testPref.sticky.bool"), false); + + // write prefs - but we haven't changed the sticky one, so it shouldn't be written. + saveAndReload(); + // sticky should not have been written to the new file. + try { + ps.getBoolPref("testPref.sticky.bool"); + Assert.ok(false, "expected failure reading this pref"); + } catch (ex) { + Assert.ok(ex, "exception reading regular pref"); + } + run_next_test(); +}); + +// Loading a sticky `pref` then a `user_pref` for the same pref means it should +// always be written. +add_test(function writtenOnceLoadedWithoutChange() { + // Load the same pref file *as well as* a pref file that has a user_pref for + // our sticky with the default value. It should be re-written without us + // touching it. + resetAndLoadAll(); + // reset and re-read what we just wrote - it should be written. + saveAndReload(); + Assert.strictEqual( + ps.getBoolPref("testPref.sticky.bool"), + false, + "user_pref was written with default value" + ); + run_next_test(); +}); + +// If a sticky pref is explicicitly changed, even to the default, it is written. +add_test(function writtenOnceLoadedWithChangeNonDefault() { + // Load the same pref file *as well as* a pref file that has a user_pref for + // our sticky - then change the pref. It should be written. + resetAndLoadAll(); + // Set a new val and check we wrote it. + ps.setBoolPref("testPref.sticky.bool", false); + saveAndReload(); + Assert.strictEqual( + ps.getBoolPref("testPref.sticky.bool"), + false, + "user_pref was written with custom value" + ); + run_next_test(); +}); + +// If a sticky pref is changed to the non-default value, it is written. +add_test(function writtenOnceLoadedWithChangeNonDefault() { + // Load the same pref file *as well as* a pref file that has a user_pref for + // our sticky - then change the pref. It should be written. + resetAndLoadAll(); + // Set a new val and check we wrote it. + ps.setBoolPref("testPref.sticky.bool", true); + saveAndReload(); + Assert.strictEqual( + ps.getBoolPref("testPref.sticky.bool"), + true, + "user_pref was written with custom value" + ); + run_next_test(); +}); + +// Test that prefHasUserValue always returns true whenever there is a sticky +// value, even when that value matches the default. This is mainly for +// about:config semantics - prefs with a sticky value always remain bold and +// always offer "reset" (which fully resets and drops the sticky value as if +// the pref had never changed.) +add_test(function hasUserValue() { + // sticky pref without user value. + resetAndLoadDefaults(); + Assert.strictEqual(ps.getBoolPref("testPref.sticky.bool"), false); + Assert.ok( + !ps.prefHasUserValue("testPref.sticky.bool"), + "should not initially reflect a user value" + ); + + ps.setBoolPref("testPref.sticky.bool", false); + Assert.ok( + ps.prefHasUserValue("testPref.sticky.bool"), + "should reflect a user value after set to default" + ); + + ps.setBoolPref("testPref.sticky.bool", true); + Assert.ok( + ps.prefHasUserValue("testPref.sticky.bool"), + "should reflect a user value after change to non-default" + ); + + ps.clearUserPref("testPref.sticky.bool"); + Assert.ok( + !ps.prefHasUserValue("testPref.sticky.bool"), + "should reset to no user value" + ); + ps.setBoolPref("testPref.sticky.bool", false, "expected default"); + + // And make sure the pref immediately reflects a user value after load. + resetAndLoadAll(); + Assert.strictEqual(ps.getBoolPref("testPref.sticky.bool"), false); + Assert.ok( + ps.prefHasUserValue("testPref.sticky.bool"), + "should have a user value when loaded value is the default" + ); + run_next_test(); +}); + +// Test that clearUserPref removes the "sticky" value. +add_test(function clearUserPref() { + // load things such that we have a sticky value which is the same as the + // default. + resetAndLoadAll(); + ps.clearUserPref("testPref.sticky.bool"); + + // Once we save prefs the sticky pref should no longer be written. + saveAndReload(); + try { + ps.getBoolPref("testPref.sticky.bool"); + Assert.ok(false, "expected failure reading this pref"); + } catch (ex) { + Assert.ok(ex, "pref doesn't have a sticky value"); + } + run_next_test(); +}); + +// Test that a pref observer gets a notification fired when a sticky pref +// has it's value changed to the same value as the default. The reason for +// this behaviour is that later we might have other code that cares about a +// pref being sticky (IOW, we notify due to the "state" of the pref changing +// even if the value has not) +add_test(function observerFires() { + // load things so there's no sticky value. + resetAndLoadDefaults(); + + function observe(subject, topic, data) { + Assert.equal(data, "testPref.sticky.bool"); + ps.removeObserver("testPref.sticky.bool", observe); + run_next_test(); + } + ps.addObserver("testPref.sticky.bool", observe); + + ps.setBoolPref( + "testPref.sticky.bool", + ps.getBoolPref("testPref.sticky.bool") + ); + // and the observer will fire triggering the next text. +}); -- cgit v1.2.3