started tests

Makefile

@@ -22,4 +22,8 @@ stats:
 	@du -hs build/* | sed 's/^/  /'
 	@echo
 
-.PHONY: ui stats
+test:
+	@./node_modules/.bin/mocha \
+		--require should
+
+.PHONY: ui stats test

package.json

@@ -0,0 +1,11 @@
+{
+  "author": "TJ Holowaychuk <[email protected]>",
+  "name": "uikit",
+  "description": "UIKit",
+  "version": "0.0.1",
+  "dependencies": {},
+  "devDependencies": {
+    "mocha": "*",
+    "should": "*"
+  }
+}

test/emitter.js

@@ -0,0 +1,80 @@
+
+var Emitter = require('../lib/components/emitter/emitter').Emitter;
+
+describe('Emitter', function(){
+  describe('.on(event, fn)', function(){
+    it('should add listeners', function(){
+      var emitter = new Emitter;
+      var calls = [];
+
+      emitter.on('foo', function(val){
+        calls.push('one', val);
+      });
+
+      emitter.on('foo', function(val){
+        calls.push('two', val);
+      });
+
+      emitter.emit('foo', 1);
+      emitter.emit('bar', 1);
+      emitter.emit('foo', 2);
+
+      calls.should.eql([ 'one', 1, 'two', 1, 'one', 2, 'two', 2 ]);
+    })
+  })
+
+  describe('.once(event, fn)', function(){
+    it('should add a single-shot listener', function(){
+      var emitter = new Emitter;
+      var calls = [];
+
+      emitter.once('foo', function(val){
+        calls.push('one', val);
+      });
+
+      emitter.emit('foo', 1);
+      emitter.emit('foo', 2);
+      emitter.emit('foo', 3);
+      emitter.emit('bar', 1);
+
+      calls.should.eql([ 'one', 1 ]);
+    })
+  })
+
+  describe('.off(event, fn)', function(){
+    it('should remove a listener', function(){
+      var emitter = new Emitter;
+      var calls = [];
+
+      function one() { calls.push('one'); }
+      function two() { calls.push('two'); }
+
+      emitter.on('foo', one);
+      emitter.on('foo', two);
+      emitter.off('foo', two);
+
+      emitter.emit('foo');
+
+      calls.should.eql([ 'one' ]);
+    })
+  })
+
+  describe('.off(event)', function(){
+    it('should remove all listeners for an event', function(){
+      var emitter = new Emitter;
+      var calls = [];
+
+      function one() { calls.push('one'); }
+      function two() { calls.push('two'); }
+
+      emitter.on('foo', one);
+      emitter.on('foo', two);
+      emitter.off('foo');
+
+      emitter.emit('foo');
+      emitter.emit('foo');
+
+      calls.should.eql([]);
+    })
+  })
+})