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[英]Moq converts It.IsAny<Exception> to It.IsAny<string> in expectation
[英]Moq throwing NullReferenceException on Verify with It.Is but not It.IsAny
针对我的最新版本运行单元测试我遇到了意外失败。 这很奇怪,因为测试是针对我没有更改的代码。 测试看起来像这样:
[Fact]
public void My_Test()
{
// Arrange
var expectedValuation = new Money { Amount = 0, Currency = "GBP" };
this.mockMoneyConverter.Setup(x => x.Convert(It.IsAny<MoneyWorks.Money>(), It.IsAny<Money>(), It.IsAny<ResolutionContext>()))
.Returns(expectedValuation);
var input = new QueryResults.ExistingItemResult
{
Balances = null
};
// Act
var actual = this.target.Map<ExistingItemSummary>(input);
// Assert
actual.Valuation.ShouldBe(expectedValuation);
this.mockMoneyConverter.Verify(x => x.Convert(It.Is<MoneyWorks.Money>(money => money.Amount == 0), It.IsAny<Money>(), It.IsAny<ResolutionContext>()));
}
ShouldBe 通过正常,但验证会引发错误:
Message:
System.NullReferenceException : Object reference not set to an instance of an object.
lambda_method(Closure , Money )
<>c__DisplayClass2_0`1.<Is>b__0(TValue value)
Match`1.Matches(Object value)
Matcher.Matches(Object value)
MethodCall.Matches(ICallContext call)
<>c__DisplayClass56_0.<VerifyCalls>b__0(ICallContext ac)
WhereListIterator`1.MoveNext()
Enumerable.Count[TSource](IEnumerable`1 source)
Mock.VerifyCalls(Interceptor targetInterceptor, MethodCall expected, Expression expression, Times times)
Mock.Verify[T,TResult](Mock`1 mock, Expression`1 expression, Times times, String failMessage)
Mock`1.Verify[TResult](Expression`1 expression)
我觉得奇怪的是,如果我用通用 It.IsAny 检查替换验证,它会工作并通过:
this.mockMoneyConverter.Verify(x => x.Convert(It.IsAny<MoneyWorks.Money>(), It.IsAny<Money>(), It.IsAny<ResolutionContext>()));
原来的 It.Is 检查突然开始失败有什么原因吗?
money.Amount == 0
如果 money 为空,它将无法对此进行评估,并且我预计会出现空引用异常。
如果这是您的问题,更改它以处理空情况应该可以解决问题
It.Is<MoneyWorks.Money>(money => money != null && money.Amount == 0)
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