Question

我正在尝试测试传递给接口的参数是否正确：

MailMessage expectedMailMessage = new MailMessage();

var mailerMock = new Mock<IMailSender>();
mailerMock.Setup(m => m.Send(expectedMailMessage)).Verifiable();

Mailer mailer = new Mailer(mailerMock.Object);
mailer.Send(expectedMailMessage);

mailerMock.Verify(m => m.Send(expectedMailMessage), Times.Once());

梅勒班：

public class Mailer : IMailer
{
    private readonly IMailSender _mailSender;
    public Mailer(IMailSender mailSender)
    {
        _mailSender = mailSender;
    }

    public void Send(MailMessage mailMessage)
    {
        _mailSender.Send(mailMessage);
    }
}

但是这仍然失败了，问题是它很难调试。我检查是否有一些随机Guid生成或设置了日期，但我找不到任何东西。

Answer 1

您正在将mailerMock而不是expectedMailMessage传递给Send方法：

Mailer mailer = new Mailer(mailerMock.Object);
mailer.Send(expectedMailMessage);

Answer 2

经过一番摆弄后，我放弃了想出来：

mailerMock.Verify(m => m.Send(It.Is<MailMessage>(msg => msg.Subject == expectedMailMessage.Subject));
mailerMock.Verify(m => m.Send(It.Is<MailMessage>(msg => msg.Sender == expectedMailMessage.Sender));

也更容易看到它失败的属性。

模拟参数测试

2 个答案: