NSubstitute完全手册（十八）检查调用顺序

 1     public class Controller
 2     {
 3       private IConnection connection;
 4       private ICommand command;
 5       public Controller(IConnection connection, ICommand command)
 6       {
 7         this.connection = connection;
 8         this.command = command;
 9       }
10 
11       public void DoStuff() 
12       {
13         connection.Open();
14         command.Run(connection);
15         connection.Close();
16       }
17     }
18 
19     public class ICommand
20     {
21       public void Run(IConnection connection) { }
22     }
23 
24     public class IConnection
25     {
26       public void Open() { }
27 
28       public void Close() { }
29 
30       public event Action SomethingHappened;
31     }
32 
33     [TestMethod]
34     public void Test_CheckingCallOrder_CommandRunWhileConnectionIsOpen()
35     {
36       var connection = Substitute.For<IConnection>();
37       var command = Substitute.For<ICommand>();
38       var subject = new Controller(connection, command);
39 
40       subject.DoStuff();
41 
42       Received.InOrder(() =>
43       {
44         connection.Open();
45         command.Run(connection);
46         connection.Close();
47       });
48     }

 1     [TestMethod]
 2     public void Test_CheckingCallOrder_SubscribeToEventBeforeOpeningConnection()
 3     {
 4       var connection = Substitute.For<IConnection>();
 5       connection.SomethingHappened += () => { /* some event handler */ };
 6       connection.Open();
 7 
 8       Received.InOrder(() =>
 9       {
10         connection.SomethingHappened += Arg.Any<Action>();
11         connection.Open();
12       });
13     }