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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
const { Observers } = ChromeUtils.importESModule(
"resource://services-common/observers.sys.mjs"
);
var gSubject = {};
add_test(function test_function_observer() {
let foo = false;
let onFoo = function (subject, data) {
foo = !foo;
Assert.equal(subject, gSubject);
Assert.equal(data, "some data");
};
Observers.add("foo", onFoo);
Observers.notify("foo", gSubject, "some data");
// The observer was notified after being added.
Assert.ok(foo);
Observers.remove("foo", onFoo);
Observers.notify("foo");
// The observer was not notified after being removed.
Assert.ok(foo);
run_next_test();
});
add_test(function test_method_observer() {
let obj = {
foo: false,
onFoo(subject, data) {
this.foo = !this.foo;
Assert.equal(subject, gSubject);
Assert.equal(data, "some data");
},
};
// The observer is notified after being added.
Observers.add("foo", obj.onFoo, obj);
Observers.notify("foo", gSubject, "some data");
Assert.ok(obj.foo);
// The observer is not notified after being removed.
Observers.remove("foo", obj.onFoo, obj);
Observers.notify("foo");
Assert.ok(obj.foo);
run_next_test();
});
add_test(function test_object_observer() {
let obj = {
foo: false,
observe(subject, topic, data) {
this.foo = !this.foo;
Assert.equal(subject, gSubject);
Assert.equal(topic, "foo");
Assert.equal(data, "some data");
},
};
Observers.add("foo", obj);
Observers.notify("foo", gSubject, "some data");
// The observer is notified after being added.
Assert.ok(obj.foo);
Observers.remove("foo", obj);
Observers.notify("foo");
// The observer is not notified after being removed.
Assert.ok(obj.foo);
run_next_test();
});
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