michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: Components.utils.import("resource://services-common/observers.js");
michael@0: 
michael@0: let gSubject = {};
michael@0: 
michael@0: function run_test() {
michael@0:   run_next_test();
michael@0: }
michael@0: 
michael@0: add_test(function test_function_observer() {
michael@0:   let foo = false;
michael@0: 
michael@0:   let onFoo = function(subject, data) {
michael@0:     foo = !foo;
michael@0:     do_check_eq(subject, gSubject);
michael@0:     do_check_eq(data, "some data");
michael@0:   };
michael@0: 
michael@0:   Observers.add("foo", onFoo);
michael@0:   Observers.notify("foo", gSubject, "some data");
michael@0: 
michael@0:   // The observer was notified after being added.
michael@0:   do_check_true(foo);
michael@0: 
michael@0:   Observers.remove("foo", onFoo);
michael@0:   Observers.notify("foo");
michael@0: 
michael@0:   // The observer was not notified after being removed.
michael@0:   do_check_true(foo);
michael@0: 
michael@0:   run_next_test();
michael@0: });
michael@0: 
michael@0: add_test(function test_method_observer() {
michael@0:   let obj = {
michael@0:     foo: false,
michael@0:     onFoo: function(subject, data) {
michael@0:       this.foo = !this.foo;
michael@0:       do_check_eq(subject, gSubject);
michael@0:       do_check_eq(data, "some data");
michael@0:     }
michael@0:   };
michael@0: 
michael@0:   // The observer is notified after being added.
michael@0:   Observers.add("foo", obj.onFoo, obj);
michael@0:   Observers.notify("foo", gSubject, "some data");
michael@0:   do_check_true(obj.foo);
michael@0: 
michael@0:   // The observer is not notified after being removed.
michael@0:   Observers.remove("foo", obj.onFoo, obj);
michael@0:   Observers.notify("foo");
michael@0:   do_check_true(obj.foo);
michael@0: 
michael@0:   run_next_test();
michael@0: });
michael@0: 
michael@0: add_test(function test_object_observer() {
michael@0:   let obj = {
michael@0:     foo: false,
michael@0:     observe: function(subject, topic, data) {
michael@0:       this.foo = !this.foo;
michael@0: 
michael@0:       do_check_eq(subject, gSubject);
michael@0:       do_check_eq(topic, "foo");
michael@0:       do_check_eq(data, "some data");
michael@0:     }
michael@0:   };
michael@0: 
michael@0:   Observers.add("foo", obj);
michael@0:   Observers.notify("foo", gSubject, "some data");
michael@0: 
michael@0:   // The observer is notified after being added.
michael@0:   do_check_true(obj.foo);
michael@0: 
michael@0:   Observers.remove("foo", obj);
michael@0:   Observers.notify("foo");
michael@0: 
michael@0:   // The observer is not notified after being removed.
michael@0:   do_check_true(obj.foo);
michael@0: 
michael@0:   run_next_test();
michael@0: });