CollectionAssert.IsNotSubsetOf Method (ICollection, ICollection, String)

Verifies that the first collection is not a subset of the second collection. Displays a message if the assertion fails.

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


Public Shared Sub IsNotSubsetOf ( _
    subset As ICollection, _
    superset As ICollection, _
    message As String _
public static void IsNotSubsetOf(
    ICollection subset,
    ICollection superset,
    string message
static void IsNotSubsetOf(
    ICollection^ subset, 
    ICollection^ superset, 
    String^ message
static member IsNotSubsetOf : 
        subset:ICollection * 
        superset:ICollection * 
        message:string -> unit
public static function IsNotSubsetOf(
    subset : ICollection, 
    superset : ICollection, 
    message : String


  • subset
    Type: ICollection

    The collection not expected to be a subset of superset.

  • superset
    Type: ICollection

    The collection not expected to be a superset of subset.

  • message
    Type: String

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


Exception Condition

All elements in subset are found in superset and are found in sufficient quantity.


One collection is a subset of another collection if every element in the first collection also appears in the second collection. An element that appears in the first collection more than once must appear in the second collection as many times, or more, as it does in the first collection. The second collection may have elements that are not in the first collection, but that is not required.

.NET Framework Security

See Also


CollectionAssert Class

IsNotSubsetOf Overload

Microsoft.VisualStudio.TestTools.UnitTesting Namespace

Other Resources

Using the Assert Classes