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CollectionAssert.AreNotEquivalent Method (ICollection, ICollection, String)

Verifies that two specified collections are not equivalent. The assertion fails if the collections are equivalent. Displays a message if the assertion fails.

Namespace:  Microsoft.VisualStudio.TestTools.UnitTesting
Assembly:  Microsoft.VisualStudio.QualityTools.UnitTestFramework (in Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll)

public static void AreNotEquivalent(
	ICollection expected,
	ICollection actual,
	string message


Type: ICollection

The first collection to compare. This contains the elements the unit test expects to be different from the actual collection.

Type: ICollection

The second collection to compare. This is the collection the unit test produced.

Type: String

A message to display if the assertion fails. This message can be seen in the unit test results.


The two collections contain the same elements, including the same number of duplicate occurrences of each element.

Two collections are equivalent if they have the same elements in the same quantity, but in any order. Elements are equal if their values are equal, not if they refer to the same object.

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