我使用Moq对我们使用Entity Framework的一些代码进行单元测试。在我的单元测试中,我有以下代码,但是当我测试它时,我无法获得正确的返回值(一切编译好,但计数结果为0,返回null)。这告诉我,我的Entity对象从未添加到我的模拟仓库中。
[TestMethod]
public void GetEntity_ValidName_EntityReturned()
{
Entity testEntity = new Entity();
testEntity.Name = "Test";
var mockService = new Mock<IUnitOfWork>();
mockService.Setup(mock => mock.EntityRepo.Add(testEntity));
IUnitOfWork testDB = mockService.Object;
testDB.EntityRepo.Add(testEntity);
Entity testEntity2 = EntityHelper.getEntity(testDB,testEntity.Name);
int count = testDB.EntityRepo.Count();
Assert.AreEqual(testEntity.Name,testEntity2.Name);
}
如何添加实体?我还需要吗?我还尝试了以下无法编译的内容:
mockService.Setup(mock => mock.EntityRepo.Add(testEntity)).Returns(testEntity);
同上:
mockService.SetupGet(mock => mock.EntityRepo.Add(testEntity)).Returns(testEntity);
编辑:这是测试的目标:
public static Entity getEntity(IUnitOfWork database, string entityName)
{
Entity _entity = database.EntityRepo.Find(x => x.Name.ToLower().Trim() == entityName).FirstOrDefault();
return _entity;
}
答案 0 :(得分:5)
这是你需要模拟的命令:
database.EntityRepo.Find
您无需担心模拟服务,只需IUnitOfWork
类似的东西:
testDB.Setup(m => m.Find(It.IsAny<object[]>())).Returns(new List<Entity>() entity);
工作示例:
由于双击,我们需要为IUnitOfWork
EntityRepo
悬挂模拟
[TestMethod]
public void GetEntity_ValidName_EntityReturned()
{
Entity testEntity = new Entity();
testEntity.Name = "Test";
var mockEntityRepo = new Mock<IRepo>(); // Type of Repo here
var mockService = new Mock<IUnitOfWork>();
mockService.Setup(m => m.EntityRepo).Returns(mockEntityRepo.Object);
mockEntityRepo.Setup(m => m.Find(It.IsAny<Expression<Func<Entity, bool>>>())).Returns(testEntity);
Entity testEntity2 = EntityHelper.getEntity(mockService.Object, testEntity.Name);
int count = testDB.EntityRepo.Count();
Assert.AreEqual(testEntity.Name,testEntity2.Name);
}
模拟设置应该与正在测试的方法中的调用相对应。