MSTest: CollectionAssert.AreEquivalent failed. The expected collection contains 1 occurrence(s) of

Question

Question:

Can anyone tell me why my unit test is failing with this error message?

CollectionAssert.AreEquivalent failed. The

Answer 1

You are absolutely right. Unless you provide something like an IEqualityComparer or implement MyPerson.Equals(), the two MyPerson objects will be compared with object.Equals, just like any other object. Since the objects are different, the Assert will fail.