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@@ -302,6 +302,104 @@ describe('UNIT: Observer', function () {
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})
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+ describe('Multiple observers', function () {
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+
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+ var ob1 = new Emitter(),
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+ ob2 = new Emitter(),
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+ obj = {a:1}
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+ ob1.proxies = {}
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+ ob2.proxies = {}
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+ Observer.observe(obj, 'test', ob1)
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+ Observer.observe(obj, 'test', ob2)
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+
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+ var ob1Called = false,
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+ ob2Called = false
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+
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+ ob1.on('set', function () {
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+ ob1Called = true
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+ })
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+ ob2.on('set', function () {
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+ ob2Called = true
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+ })
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+
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+ it('should trigger events for multiple observers observing the same object', function () {
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+ obj.a = 2
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+ assert.ok(ob1Called)
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+ assert.ok(ob2Called)
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+ })
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+
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+ })
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+
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+ describe('.unobserve()', function () {
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+
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+ var ob1 = new Emitter(),
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+ ob2 = new Emitter(),
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+ obj = {a:1}
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+ ob1.proxies = {}
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+ ob2.proxies = {}
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+ Observer.observe(obj, 'test', ob1)
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+ Observer.observe(obj, 'test', ob2)
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+ Observer.unobserve(obj, 'test', ob1)
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+
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+ var ob1Called = false
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+ ob1.on('set', function () {
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+ ob1Called = true
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+ })
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+ var ob2Called = false
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+ ob2.on('set', function () {
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+ ob2Called = true
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+ })
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+
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+ it('should set observer proxies path to null', function () {
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+ assert.strictEqual(ob1.proxies['test.'], null)
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+ })
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+
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+ it('should turn off corresponding event listeners', function () {
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+ var callbacks = obj.__observer__._callbacks
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+ for (var e in callbacks) {
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+ assert.strictEqual(callbacks[e].length, 1)
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+ }
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+ })
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+
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+ it('should no longer emit events', function () {
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+ obj.a = 2
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+ assert.notOk(ob1Called)
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+ assert.ok(ob2Called)
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+ })
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+
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+ })
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+
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+ describe('.ensurePath()', function () {
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+
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+ it('should ensure a path can be accessed without error', function () {
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+ var obj = {},
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+ path = 'a.b.c'
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+ Observer.ensurePath(obj, path)
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+ assert.strictEqual(obj.a.b.c, undefined)
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+ })
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+
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+ })
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+
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+ describe('.ensurePaths()', function () {
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+
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+ it('should ensure path for all paths that start with the given key', function () {
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+ var key = 'a',
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+ obj = {},
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+ paths = {
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+ 'a.b.c': 1,
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+ 'a.d': 2,
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+ 'e.f': 3,
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+ 'g': 4
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+ }
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+ Observer.ensurePaths(key, obj, paths)
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+ assert.strictEqual(obj.b.c, undefined)
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+ assert.strictEqual(obj.d, undefined)
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+ assert.notOk('f' in obj)
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+ assert.strictEqual(Object.keys(obj).length, 2)
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+ })
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+
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+ })
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+
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function setTestFactory (opts) {
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return function () {
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var ob = new Emitter(),
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Evan You