public void ShouldCreateNewMachine() { environments.Items.Add(new EnvironmentResource { Id = "environments-1", Name = "UAT", Links = LinkCollection.Self("/api/environments/environments-1").Add("Machines", "/api/environments/environments-1/machines") }); environments.Items.Add(new EnvironmentResource { Id = "environments-2", Name = "Production", Links = LinkCollection.Self("/api/environments/environments-2").Add("Machines", "/api/environments/environments-2/machines") }); operation.TentacleThumbprint = "ABCDEF"; operation.TentaclePort = 10930; operation.MachineName = "Mymachine"; operation.TentacleHostname = "Mymachine.test.com"; operation.CommunicationStyle = CommunicationStyle.TentaclePassive; operation.EnvironmentNames = new[] { "Production" }; operation.Execute(serverEndpoint); client.Received().Create("/api/machines", Arg.Is <MachineResource>(m => m.Name == "Mymachine" && ((ListeningTentacleEndpointResource)m.Endpoint).Uri == "https://mymachine.test.com:10930/" && m.EnvironmentIds.First() == "environments-2")); }