public void GetUserTest()
        {
            // Act
            var result = _controller.GetUser();

            // Assert
            Assert.IsInstanceOf(typeof(DefaultModel), result);
            Assert.AreEqual(Environment.UserName, result.UserName);
            Assert.AreEqual(Environment.UserDomainName, result.UserDomainName);
            Assert.AreEqual(Environment.MachineName, result.MachineName);
            Assert.AreEqual(Environment.OSVersion.VersionString, result.OSVersionString);
        }