如何模拟返回接口的方法?

Question

我需要模拟一个返回接口的方法，但我无法弄清楚。这是我的尝试。我不知道如何返回什么，因为你不能返回一个接口。

messagingClient.Setup(x =>
x.CreateMessage(new OrganizationUserDeletedDomainEvent
{
UserType = 1,
OrganizationUserId = 1,
OrganizationId = 1,
DeletedAt = 100000
})).Returns();

方法有这样的签名:

IMessage<TContent> CreateMessage<TContent>(TContent messageContent)
where TContent : class, new();

Answer 1

您可以创建IMessage的模拟并使用该模拟返回

var messageMock = new Mock<IMessage<OrganizationUserDeletedDomainEvent>>();
messagingClient.Setup(x =>
x.CreateMessage(new OrganizationUserDeletedDomainEvent
{
UserType = 1,
OrganizationUserId = 1,
OrganizationId = 1,
DeletedAt = 100000
})).Returns(messageMock.Object);