Question

使用FluentAssertion 3.1.229，您如何比较两个不同MemoryStream的内容？

写actualStream.Should().Be(expectedStream);会产生以下错误：

System.IO.MemoryStream
{
   CanRead = True
   CanSeek = True
   CanTimeout = False
   CanWrite = True
   Capacity = 8
   Length = 8
   Position = 0
   ReadTimeout = "[Property 'ReadTimeout' threw an exception: 'Exception has been thrown by the target of an invocation.']"
   WriteTimeout = "[Property 'WriteTimeout' threw an exception: 'Exception has been thrown by the target of an invocation.']"
}, but found 

System.IO.MemoryStream
{
   CanRead = True
   CanSeek = True
   CanTimeout = False
   CanWrite = True
   Capacity = 8
   Length = 8
   Position = 0
   ReadTimeout = "[Property 'ReadTimeout' threw an exception: 'Exception has been thrown by the target of an invocation.']"
   WriteTimeout = "[Property 'WriteTimeout' threw an exception: 'Exception has been thrown by the target of an invocation.']"
}.

是的，我可以使用NUnit Assert.That(actualStream, Is.EqualTo(expectedStream));但是可以使用FluentAssertions吗？

感谢。

Answer 1

也许这对你有用吗？

actualStream.ToArray().Should().Be(expectedStream.ToArray());

Answer 2

您的NUnit解决方案也不起作用，因为MemoryStream的{{1}}实现不会进行逐字节比较。相反，使用

Equals。

actualStream.GetBuffer().ShouldBeEquivalentTo(expectedStream.GetBuffer())返回对内部字节数组的引用，并在其上调用GetBuffer将导致集合断言进行逐字节比较。

如何比较两个MemoryStream和FluentAssertions

2 个答案: