1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/modules/libpref/test/unit_ipc/test_user_default_prefs.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,76 @@
1.4 +const Ci = Components.interfaces;
1.5 +const Cc = Components.classes;
1.6 +
1.7 +let pb = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
1.8 +
1.9 +// This pref is chosen somewhat arbitrarily --- we just need one
1.10 +// that's guaranteed to have a default value.
1.11 +const kPrefName = 'intl.accept_languages'; // of type char, which we
1.12 + // assume below
1.13 +let initialValue = null;
1.14 +
1.15 +function check_child_pref_info_eq(continuation) {
1.16 + sendCommand(
1.17 + 'var pb = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);\n'+
1.18 + // Returns concatenation "[value],[isUser]"
1.19 + 'pb.getCharPref("'+ kPrefName +'")+ "," +'+
1.20 + 'pb.prefHasUserValue("'+ kPrefName +'");',
1.21 + function (info) {
1.22 + let [ value, isUser ] = info.split(',');
1.23 + do_check_eq(pb.getCharPref(kPrefName), value);
1.24 + do_check_eq(pb.prefHasUserValue(kPrefName), isUser == "true");
1.25 + continuation();
1.26 + });
1.27 +}
1.28 +
1.29 +function run_test() {
1.30 + // We finish in clean_up()
1.31 + do_test_pending();
1.32 +
1.33 + try {
1.34 + if (pb.getCharPref('dom.ipc.processPrelaunch.enabled')) {
1.35 + dump('WARNING: Content process may already have launched, so this test may not be meaningful.');
1.36 + }
1.37 + } catch(e) { }
1.38 +
1.39 + initialValue = pb.getCharPref(kPrefName);
1.40 +
1.41 + test_user_setting();
1.42 +}
1.43 +
1.44 +function test_user_setting() {
1.45 + // We rely on setting this before the content process starts up.
1.46 + // When it starts up, it should recognize this as a user pref, not
1.47 + // a default pref.
1.48 + pb.setCharPref(kPrefName, 'i-imaginarylanguage');
1.49 + // NB: processing of the value-change notification in the child
1.50 + // process triggered by the above set happens-before the remaining
1.51 + // code here
1.52 + check_child_pref_info_eq(function () {
1.53 + do_check_eq(pb.prefHasUserValue(kPrefName), true);
1.54 +
1.55 + test_cleared_is_default();
1.56 + });
1.57 +}
1.58 +
1.59 +function test_cleared_is_default() {
1.60 + pb.clearUserPref(kPrefName);
1.61 + // NB: processing of the value-change notification in the child
1.62 + // process triggered by the above set happens-before the remaining
1.63 + // code here
1.64 + check_child_pref_info_eq(function () {
1.65 + do_check_eq(pb.prefHasUserValue(kPrefName), false);
1.66 +
1.67 + clean_up();
1.68 + });
1.69 +}
1.70 +
1.71 +function clean_up() {
1.72 + pb.setCharPref(kPrefName, initialValue);
1.73 + // NB: processing of the value-change notification in the child
1.74 + // process triggered by the above set happens-before the remaining
1.75 + // code here
1.76 + check_child_pref_info_eq(function () {
1.77 + do_test_finished();
1.78 + });
1.79 +}
1.80 \ No newline at end of file
