public void DeployViewModel_ServersAreNotTheSame_SourceServerIsNull_True()
{
//------------Setup for test--------------------------
Mock<IEnvironmentModel> destEnv;
Mock<IEnvironmentModel> destServer;
var deployViewModel = SetupDeployViewModel(out destEnv, out destServer);
deployViewModel.SelectedSourceServer = null;
destServer.Setup(a => a.AuthorizationService).Returns(_authService.Object);
deployViewModel.SelectedDestinationServer = destServer.Object;
//------------Execute Test---------------------------
var serversAreNotTheSame = deployViewModel.ServersAreNotTheSame;
//------------Assert Results-------------------------
Assert.IsTrue(serversAreNotTheSame);
}