Added extra User model tests

test/user_test.js

@@ -0,0 +1,41 @@
+var chai = require('chai');
+var should = chai.should();
+var User = require('../models/User');
+
+describe('User attributes', function() {
+  before(function(done) {
+    user = new User({
+      email: 'janedoe@gmail.com',
+      password: 'password'
+    });
+    done();
+  });
+
+  it('email should be a string', function() {
+    user.email.should.be.a('string');
+  });
+
+  it('password should be a string', function() {
+    user.password.should.be.a('string');
+  });
+
+  it('should save a user', function(done) {
+    user.save();
+    done();
+  });
+
+  it('should find our newly created user', function(done) {
+    User.findOne({ email: user.email }, function(err, user) {
+      should.exist(user);
+      user.email.should.equal('janedoe@gmail.com');
+      done();
+    });
+  });
+
+  it('should not allow users with duplicate emails', function(done) {
+    user.save(function(err) {
+      err.code.should.equal(11000);
+      done();
+    });
+  });
+});