diff options
Diffstat (limited to 'modules/libpref/test/unit_ipc/test_user_default_prefs.js')
| -rw-r--r-- | modules/libpref/test/unit_ipc/test_user_default_prefs.js | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/modules/libpref/test/unit_ipc/test_user_default_prefs.js b/modules/libpref/test/unit_ipc/test_user_default_prefs.js new file mode 100644 index 000000000..3b8ca28c6 --- /dev/null +++ b/modules/libpref/test/unit_ipc/test_user_default_prefs.js @@ -0,0 +1,76 @@ +var Ci = Components.interfaces; +var Cc = Components.classes; + +var pb = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch); + +// This pref is chosen somewhat arbitrarily --- we just need one +// that's guaranteed to have a default value. +const kPrefName = 'intl.accept_languages'; // of type char, which we + // assume below +var initialValue = null; + +function check_child_pref_info_eq(continuation) { + sendCommand( + 'var pb = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);\n'+ + // Returns concatenation "[value],[isUser]" + 'pb.getCharPref("'+ kPrefName +'")+ "," +'+ + 'pb.prefHasUserValue("'+ kPrefName +'");', + function (info) { + let [ value, isUser ] = info.split(','); + do_check_eq(pb.getCharPref(kPrefName), value); + do_check_eq(pb.prefHasUserValue(kPrefName), isUser == "true"); + continuation(); + }); +} + +function run_test() { + // We finish in clean_up() + do_test_pending(); + + try { + if (pb.getCharPref('dom.ipc.processPrelaunch.enabled')) { + dump('WARNING: Content process may already have launched, so this test may not be meaningful.'); + } + } catch(e) { } + + initialValue = pb.getCharPref(kPrefName); + + test_user_setting(); +} + +function test_user_setting() { + // We rely on setting this before the content process starts up. + // When it starts up, it should recognize this as a user pref, not + // a default pref. + pb.setCharPref(kPrefName, 'i-imaginarylanguage'); + // NB: processing of the value-change notification in the child + // process triggered by the above set happens-before the remaining + // code here + check_child_pref_info_eq(function () { + do_check_eq(pb.prefHasUserValue(kPrefName), true); + + test_cleared_is_default(); + }); +} + +function test_cleared_is_default() { + pb.clearUserPref(kPrefName); + // NB: processing of the value-change notification in the child + // process triggered by the above set happens-before the remaining + // code here + check_child_pref_info_eq(function () { + do_check_eq(pb.prefHasUserValue(kPrefName), false); + + clean_up(); + }); +} + +function clean_up() { + pb.setCharPref(kPrefName, initialValue); + // NB: processing of the value-change notification in the child + // process triggered by the above set happens-before the remaining + // code here + check_child_pref_info_eq(function () { + do_test_finished(); + }); +}
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