CollectionAssert.AllItemsAreUnique Method (ICollection, String, array<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)

Syntax

'Declaration
Public Shared Sub AllItemsAreUnique ( _
    collection As ICollection, _
    message As String, _
    ParamArray parameters As Object() _
)

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

public:
static void AllItemsAreUnique(
    ICollection^ collection, 
    String^ message, 
    ... array<Object^>^ parameters
)

static member AllItemsAreUnique : 
        collection:ICollection * 
        message:string * 
        parameters:Object[] -> unit

public static function AllItemsAreUnique(
    collection : ICollection, 
    message : String, 
    ... parameters : Object[]
)

Parameters

• collection
  Type: ICollection

  The collection in which to search for duplicate elements.

• message
  Type: String

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

• parameters
  Type: array<Object[]

  An array of parameters to use when formatting message.

Exceptions

Exception	Condition
AssertFailedException	Two or more equal elements are found in collection.

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

CollectionAssert Class

AllItemsAreUnique Overload

Microsoft.VisualStudio.TestTools.UnitTesting Namespace

Other Resources

Using the Assert Classes