[英]Moq: setup a generic method with mocked parameters
我一直在嘗試為我的通用方法在NUnit中編寫一些測試,但沒有成功。 我希望我能弄清楚我的處境,因為我不得不大量解釋我的代碼。
DoBusinessLogic()是我要測試的方法。 它從基類中調用其他兩個方法:
public class MySvc : BaseSvc, IMySvc
{
private readonly IMyRepo _repo;
private readonly IMyConnectorClass _connector
public MySvc(IMyRepo repo) : base(repo)
{
_repo = repo;
_connector = _repo.GetConnector();
}
public async Task DoBusinessLogic(int id1, int id2){
bool doesFirstObjectExist = await CheckMainObjExists<Foo>(id1, _connector);
await CheckSubObjExists<Bar>(id2, _connector);
// further business logic
}
}
這些方法依次調用相同的存儲庫方法,但其邏輯不同:
public abstract class BaseSvc : IBaseSvc
{
private readonly IBaseRepo _repo
protected BaseSvc(IBaseRepo repo)
{
_repo = repo;
}
protected async Task<bool> CheckMainObjExists<T>(int? id, IMyConnectorClass connector)
{
return await _repo.GetObjectByIdAsync<T>(Id, connector) != null;
}
protected async Task CheckSubObjExists<T>(int? id, IMyConnectorClass connector)
{
if (await _repo.GetObjectByIdAsync<T>(Id, connector) == null)
{ throw new Exception("Object not found!"); }
}
}
接下來,我想在MySvc類中為DoBusinessLogic()編寫單元測試。 不幸的是,看來我無法模擬來自存儲庫的響應。
[TestFixture]
public class MySvcTests
{
private MySvc _svc;
private Mock<IMyRepo> _repoMock;
private Mock<IMyConnectorClass> _connectorMock;
[SetUp]
public void SetUp()
{
_repoMock = new Mock<IMyRepo>() {};
_connectorMock = new Mock<IMyConnectorClass>();
_repo.SetUp(r => r.GetConnector()).Return(_connectorMock.Object);
_svc = new MySvc(_repoMock);
}
/*
My intent in this test, is to make CheckMainObjExists() pass,
but make CheckSubObjExist() fail.
*/
[Test]
public async Task DoBusinessLogic_If2ndObjectNotExist_ThrowException()
{
// This should return an object
_repoMock.Setup(r => r.GetObjectByIdAsync<Foo>(It.IsAny<int>(), _connectorMock.Object))
.ReturnsAsync(new Foo());
// This should return null
_repoMock.Setup(r => r.GetObjectByIdAsync<Bar>(It.IsAny<int>(), _connectorMock.Object))
.ReturnsAsync((Bar) null);
Assert.Throws<Exception>(await _svc.DoBusinessLogic());
}
}
但是,當我運行測試時,為我的模擬回購設置的兩個方法都返回null,而我希望第一個方法為“ true”。 我不知道問題出在哪里,但我懷疑:
我剛剛測試了這段代碼,它可以按預期運行。 現在,我不得不做很多假設,只是為了使代碼能夠編譯和運行,這意味着我對您的代碼的測試存在缺陷,因為我可能已經修復了示例中省略的內容。
我沒有對您的測試設置代碼進行任何更改,但仍然有效。
[TestClass]
public class MySvcTests {
[TestMethod]
[ExpectedException(typeof(Exception))]
public async Task DoBusinessLogic_If2ndObjectNotExist_ThrowException() {
var _repoMock = new Mock<IMyRepo>() { };
var _connectorMock = new Mock<IMyConnectorClass>();
_repoMock.Setup(r => r.GetConnector()).Returns(_connectorMock.Object);
var _svc = new MySvc(_repoMock.Object);
// This should return an object
_repoMock.Setup(r => r.GetObjectByIdAsync<Foo>(It.IsAny<int>(), _connectorMock.Object))
.ReturnsAsync(new Foo());
// This should return null
_repoMock.Setup(r => r.GetObjectByIdAsync<Bar>(It.IsAny<int>(), _connectorMock.Object))
.ReturnsAsync((Bar)null);
await _svc.DoBusinessLogic(0, 0);
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.