adding few tests for Peer.js

test/test.Peer.js

@@ -20,6 +20,28 @@ describe('Peer', function() {
     var p = new Peer('localhost', 8333);
     should.exist(p);
   });
+  it('should be able to create instance', function() {
+    var p = new Peer('localhost:8333');
+    should.exist(p);
+  });
+  it('should be able to create instance', function() {
+    var p = new Peer('localhost:8333');
+    var p2 = new Peer(p);
+    should.exist(p2);
+  });
+  it('should not be able to create instance', function() {
+    should.throw(function() {
+      new Peer(8333);
+    });
+  });
+  it('should be able to create instance', function() {
+    var p = new Peer('localhost', 8333);
+    p.toString().should.equal('localhost:8333');
+  });
+  it('check host as buffer', function() {
+    var p = new Peer('127.0.0.1', 8333);
+    p.getHostAsBuffer().toString('hex').should.equal('7f000001');
+  });
 });