Added files

mongoui/mongoui-master/node_modules/derby/test/EventDispatcher.mocha.coffee

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+{expect, calls} = require 'racer/test/util'
+EventDispatcher = require '../lib/EventDispatcher'
+
+describe 'EventDispatcher', ->
+
+  # Names must be a valid object key
+  name1 = 'test event'
+  name2 = 89
+
+  # Listeners can be anything that is representable in plain JSON 
+  listener1 = [1, 2, 'qu"a"il', "'", {arr: ['x', 'y']}]
+  listener2 = 0
+  listener3 = 'stuff'
+  listener4 = true
+
+  # The second and third parameters sent to trigger are simply passed through
+  # to the callback function. They can be anything.
+  value1 = 'test value'
+  options1 = {option: 4}
+
+  it 'should work without callbacks', ->
+    dispatcher = new EventDispatcher
+    dispatcher.bind name1, listener1
+    dispatcher.trigger name1, value1, options1
+
+  it 'calls onTrigger', calls 2, (done) ->
+    dispatcher = new EventDispatcher
+      onTrigger: (name, listener, value, options) ->
+        expect(listener).to.eql listener1
+        expect(value).to.equal value1
+        expect(options).to.equal options1
+        done()
+    dispatcher.bind name1, listener1
+    dispatcher.trigger name1, value1, options1
+    dispatcher.trigger name1, value1, options1
+
+  it 'calls onTrigger without listener', calls 2, (done) ->
+    dispatcher = new EventDispatcher
+      onTrigger: (name, listener, value, options) ->
+        expect(listener).to.equal undefined
+        expect(value).to.equal value1
+        expect(options).to.equal options1
+        done()
+    dispatcher.bind name1
+    dispatcher.trigger name1, value1, options1
+    dispatcher.trigger name1, value1, options1
+
+  it 'calls onTrigger for multiple listeners', calls 1, (done) ->
+    counts = {all: 0}
+    beforeExit = ->
+      expect(counts[listener2]).to.equal 1
+      expect(counts[listener3]).to.equal 3
+      expect(counts[listener4]).to.equal 1
+      done()
+
+    dispatcher = new EventDispatcher
+      onTrigger: (name, listener, value, options) ->
+        counts[listener] = (counts[listener] || 0) + 1
+        expect(value).to.equal value1
+        expect(options).to.equal options1
+        beforeExit() if ++counts.all == 5
+
+    dispatcher.bind name1, listener2
+    dispatcher.bind name1, listener3
+    dispatcher.bind name1, listener4
+    dispatcher.bind name2, listener3
+    dispatcher.trigger name1, value1, options1
+    dispatcher.trigger name2, value1, options1
+    dispatcher.trigger name2, value1, options1
+
+  it 'test EventDispatcher remove listener after failed trigger', calls 1, (done) ->
+    dispatcher = new EventDispatcher
+      onTrigger: ->
+        done()
+        return false
+    dispatcher.bind name1
+    dispatcher.trigger name1
+    dispatcher.trigger name1
+
+  it 'test EventDispatcher do not trigger twice after double bind', calls 1, (done) ->
+    dispatcher = new EventDispatcher onTrigger: done
+    dispatcher.bind name1, listener1
+    dispatcher.bind name1, listener1
+    dispatcher.trigger name1
+
+  it 'test EventDispatcher bind callback', calls 3, (done) ->
+    dispatcher = new EventDispatcher
+      onTrigger: (name, listener, value, options) ->
+        expect(listener).to.eql listener1
+        expect(value).to.equal value1
+        expect(options).to.equal options1
+        done()
+      onBind: (name, listener) ->
+        expect(name).to.equal name1
+        expect(listener).to.eql listener1
+        done()
+    dispatcher.bind name1, listener1
+    dispatcher.trigger name1, value1, options1
+    dispatcher.trigger name1, value1, options1