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CollectionAssert.AllItemsAreUnique Method (ICollection, String, Object[])


Verifies that all items in the specified collection are unique. The assertion fails if any two elements in the collection are equal. Displays a message if the assertion fails, and applies the specified formatting to it.

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

public static void AllItemsAreUnique(
	ICollection collection,
	string message,
	params object[] parameters


Type: System.Collections.ICollection

The collection in which to search for duplicate elements.

Type: System.String

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

Type: System.Object[]

An array of parameters to use when formatting message.

Exception Condition

Two or more equal elements are found in collection.

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