通用存储库的模拟方法

Question

我正在尝试使用 Moq 模拟以下方法：

public interface IGenericRepository<TEntity> where TEntity : class
{
    ...

    IEnumerable<TEntity> Get(Expression<Func<TEntity, bool>> filter = null,
        Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBy = null, string includeProperties = "");

}

它是这样初始化的：

_invoiceRepository = new SqlGenericRepository<InvoiceEntity>(Context);

无论参数如何，方法都应该 return 一个列表。

我试过了

_invoiceRepositoryMock.Setup(m => m.Get(It.IsAny<>()).Returns(...)

和

_invoiceRepositoryMock.Setup(m => m.Get(It.IsAny<Expression<Func<InvoiceEntity, bool>>>())).Returns(...)

但两者均无效。

Answer 1

如果您的方法是：

IEnumerable<TEntity> Get(
    Expression<Func<TEntity, bool>> filter = null,
    Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBy = null,    
    string includeProperties = "");

你的模拟必须是这样的：

_invoiceRepositoryMock.Setup(m => m.Get(
    It.IsAny<Expression<Func<InvoiceEntity, bool>>>(),
    It.IsAny<Func<IQueryable<InvoiceEntity>, IOrderedQueryable<InvoiceEntity>>>(),
    It.IsAny<string>())).Returns(...)

Answer 2

你能试试这样吗，因为该方法有 4 个参数，请尝试在 mock 中也提供 4 个参数 _invoiceRepositoryMock.Setup(m => m.Get(It.IsAny<>(),It.IsAny<>(),It.IsAny<>(),It.IsAny<>()).Returns(...

Answer 3

假设

var _invoiceRepositoryMock = new Mock<InvoiceEntity>();

然后设置即可

_invoiceRepositoryMock
    .Setup(m => m.Get(
        It.IsAny<Expression<Func<InvoiceEntity, bool>>>(),
        It.IsAny<Func<IQueryable<InvoiceEntity>, IOrderedQueryable<InvoiceEntity>>>(),
        It.IsAny<string>()))
    .Returns(...);

或更具体

_invoiceRepositoryMock
    .Setup(m => m.Get(It.IsAny<Expression<Func<InvoiceEntity, bool>>>(), null, string.Empty))
    .Returns(...);

通用存储库的模拟方法

Mocking method of generic repository

c#

unit-testing

moq

mocking

repository-pattern