C# NSSubstitute不打印NUnit断言

我刚刚开始使用

NSubstitute

。我主要与

Moq

一起工作，我就是这么做的：

// In my unit test on menter code herey mock:
HasLogMessage(Is.EqualTo("expected value"));

private void HasLogMessage(EqualConstraint s)
{
    log.Verify(y => y.Error(It.Is<string>(v => Verify(v, s))));
}

private bool Verify(string s, EqualConstraint equalConstraint)
{
    Assert.That(s, equalConstraint);
    return true;
}

IResolveConstraint表达式、字符串消息、对象[]args）

我希望能够将其用于

NSubstitute

mock，以下是我的尝试：

HasLogMessage(Is.EqualTo("Expected value"));

private void HasLogMessage(EqualConstraint s)
{
    log.Received().Log(LogLevel.Error, Arg.Is<Func<string>>(x => Verify(x, 
}

private bool Verify(Func<string> s, EqualConstraint equalConstraint)
{
    Assert.That(s(), equalConstraint);
    return true;
}

我在这里遗漏了什么吗？

日志类型澄清后更新：

除了使用之外，对于

Func

我将捕获使用的参数，并在以后检查它们

var log = Substitute.For<ILog>();
var loggedErrors = new List<string>();
// Capture the argument passed to Log whenever LogLevel.Error is called
log.Log (LogLevel.Error, Arg.Do<Func<string>>(x => loggedErrors.Add(x())));

log.Log(LogLevel.Error, () => "the real call...");

Assert.That(loggedErrors, Is.EqualTo (new[] { "expected" }));

/*
NUnit.Framework.AssertionException:   Expected is <System.String[1]>, actual is <System.Collections.Generic.List`1[System.String]> with 1 elements
  Values differ at index [0]
  Expected string length 8 but was 16. Strings differ at index 0.
  Expected: "expected"
  But was:  "the real call..."
  -----------^
*/

---

如果您想使用断言库进行更具描述性的匹配，NSubstitute中存在一些不完整的管道，需要做一些工作才能做到这一点。有。

您的示例不适合这里，第二个参数不是字符串，而是

Func

。我想这是行不通的，因为NSubstitute不会计算我的第二个参数，它只会说收到了一个非maatching调用，其中第二个参数是一个不同的func<代码>log.Received（）.log（LogLevel.Error，（）=>“预期”）

NSubstitute.Exceptions.ReceivedCallsException : Expected to receive a call matching:
    Log(Error, x => value(IdentityServer3.Saml2Bearer.Tests.Saml2BearerGrantValidatorTest)
.Verify(x, value(IdentityServer3.Saml2Bearer.Tests.Saml2BearerGrantValidatorTest+<>c__DisplayClass21_0).s), <null>, )
Actually received no matching calls.
Received 2 non-matching calls (non-matching arguments indicated 
with '*' characters)

var log = Substitute.For<ILog>();
var loggedErrors = new List<string>();
// Capture the argument passed to Log whenever LogLevel.Error is called
log.Log (LogLevel.Error, Arg.Do<Func<string>>(x => loggedErrors.Add(x())));

log.Log(LogLevel.Error, () => "the real call...");

Assert.That(loggedErrors, Is.EqualTo (new[] { "expected" }));

/*
NUnit.Framework.AssertionException:   Expected is <System.String[1]>, actual is <System.Collections.Generic.List`1[System.String]> with 1 elements
  Values differ at index [0]
  Expected string length 8 but was 16. Strings differ at index 0.
  Expected: "expected"
  But was:  "the real call..."
  -----------^
*/

log.Received ().Log (LogLevel.Error, "expected");

/*
Expected to receive a call matching:
    Log(Error, "expected")
Actually received no matching calls.
Received 1 non-matching call (non-matching arguments indicated with '*' characters):
    Log(Error, *"the real call..."*)
*/