單元測試ServiceStack REST webservices

Question

我試過幾種方法來單元測試REST服務，但無濟於事。

1. 其次this後，通過創建DirectServiceClient但「方法未實現」異常。

2. 直接實例化Web服務並調用Any（）方法，它工作但它擊中了數據庫。我已經在設置中初始化了連接，如下所示。但我不知道如何模擬連接對象並設置內存中的客戶對象。

   _dbConnection = new OrmLiteConnectionFactory（TestConfig.ConnectionString，SqlServerDialect.Provider）.OpenDbConnection（）;

任何人都可以提供一些關於如何在這種情況下編寫單元測試的輸入。

客服

public class CustomerService : Service 
{ 
    private readonly IDbConnection _dbConnection; 

    public CustomerService(IDbConnection dbConnection) 
    { 
     _dbConnection = dbConnection; 
    } 

    public object Any(CustomerRequest request) 
    { 
     if (request.id == null) 
     { 
      throw new ArgumentException("id is required"); 
     } 

     var customer = _dbConnection.QueryDapper<Customer>("getCustomer",new {@id=request.id}).ToList(); 

     return customer; 
    } 
} 

請求

[Route("/customers")] 
[Route("/customer/{id}")] 
public class CustomerRequest : IReturn<Customer> 
{ 
    public string id { get; set; } 
} 

Answer 1

這是我可以爲此方法編寫的唯一測試。

ozczehco的答案將測試拋出異常的代碼路徑。如果你想測試通過異常的代碼路徑，你需要模擬/存根_dbConnection.QueryDapper調用。

下面通過添加一個測試'Any_CalledWithAnId_ReturnsCustomer（）'在ozczecho答案擴展，幷包括所有'儀式'。我在你提供的代碼中修改了一些東西。我沒有爲新測試模擬/存根IDbConnection，而是創建了一個用於測試的InMemoryTestDatabase。 DON「T使用本對自己DATBASE，因爲它抹布用於測試的‘客戶’表。

[TestFixture] 
public class CustomerServiceTest 
{ 
    public IDbConnectionFactory InMemoryTestDatabase; 

    [SetUp] 
    public void SetUp() 
    { 
     InMemoryTestDatabase = new OrmLiteConnectionFactory("c:\\testData.db", SqliteDialect.Provider); 
    } 

    [Test] 
    public void Any_CalledWithoutId_ExpectThrowArgumentException() 
    { 
     var db = MockRepository.GenerateStub<IDbConnection>(); 
     var request = new CustomerRequest(); 
     var service = new CustomerService(db); 

     Assert.Throws<ArgumentException>(() => service.Any(request)); 
    } 

    [Test] 
    public void Any_CalledWithAnId_ReturnsCustomer() 
    { 
     //Arrange your data 
     long requestId; 
     using (var con = InMemoryTestDatabase.OpenDbConnection()) 
     { 
      con.CreateTable<Customer>(true); //Force drop to create clean table and data 
      con.Insert<Customer>(new Customer { FirstName = "Johnny", LastName = "Test"}); 
      requestId = con.GetLastInsertId(); 
     } 

     //Act 
     var request = new CustomerRequest {id = (int)requestId}; 
     var service = new CustomerService(InMemoryTestDatabase.OpenDbConnection()); 
     var result = (Customer)service.Any(request); 

     //Assert 
     Assert.AreEqual(requestId, result.Id); 
     Assert.AreEqual("Johnny", result.FirstName); 
    } 
} 


[Route("/customers")] 
[Route("/customer/{id}")] 
public class CustomerRequest : IReturn<Customer> 
{ 
    public long id { get; set; } 
} 

public class Customer 
{ 
    [AutoIncrement] 
    public long Id { get; set; } 
    public string FirstName { get; set; } 
    public string LastName { get; set; } 
} 

public class CustomerService : ServiceStack.ServiceInterface.Service 
{ 
    private readonly IDbConnection _dbConnection; 

    public CustomerService(IDbConnection dbConnection) 
    { 
     _dbConnection = dbConnection; 
    } 

    public object Any(CustomerRequest request) 
    { 
     if (request.id == null) 
     { 
      throw new ArgumentException("id is required"); 
     } 

     var customer = _dbConnection.QueryDapper<Customer>("Select * From Customer Where Id = @id", new { id = request.id }).ToList(); 

     return customer.FirstOrDefault(); 
    } 
} 

Answer 2

1. 我相信DirectServiceClient更多的是用於集成測試（即端對端）。

2. 使用模擬工具來存根數據庫。畢竟，對於這個單元測試你只是想測試「任何」方法：

[Test] 
public void Any_CalledWithoutId_ExpectThrowArgumentException() 
{ 
    var db = MockRepository.GenerateStub<IDbConnection>(); 
    var request = new CustomerRequest(); 
    var service = new CustomerService(db); 

    Assert.Throws<ArgumentException>(() => service.Any(request)); 
} 

那大概吧。 （對不起abt格式化.... SOO格式化程序不行爲，所以我阻止引用它）