add basic tests

test/index.js

@@ -0,0 +1,25 @@
+var MemorySocket = require(__dirname + '/../lib')
+
+describe('MemorySocket', function() {
+  describe('emitSoon', function() {
+    describe('emitting one event', function() {
+      var socket = new MemorySocket();
+
+      it('emits data once', function(done) {
+        socket.emitSoon('data', 'hi')
+        socket.once('data', function(data) {
+          data.should.equal('hi');
+          done();
+        })
+      })
+
+      it('emits new data second time', function(done) {
+        socket.emitSoon('data', 'bye');
+        socket.on('data', function(data) {
+          data.should.equal('bye');
+          done();
+        })
+      })
+    })
+  })
+})