CollectionAssert.IsSubsetOf Method (ICollection, ICollection, String)

Verifies that the first collection is 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)

Syntax

'Declaration
Public Shared Sub IsSubsetOf ( _
    subset As ICollection, _
    superset As ICollection, _
    message As String _
)

public static void IsSubsetOf(
    ICollection subset,
    ICollection superset,
    string message
)

public:
static void IsSubsetOf(
    ICollection^ subset, 
    ICollection^ superset, 
    String^ message
)

static member IsSubsetOf : 
        subset:ICollection * 
        superset:ICollection * 
        message:string -> unit

public static function IsSubsetOf(
    subset : ICollection, 
    superset : ICollection, 
    message : String
)

Parameters

• subset
  Type: ICollection

  The collection expected to be a subset of superset.

• superset
  Type: ICollection

  The collection 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.

Exceptions

Exception	Condition
AssertFailedException	An element in subset is not found in superset or an element in subset is not found in superset in sufficient quantity.

Remarks

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

• 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

IsSubsetOf Overload

Microsoft.VisualStudio.TestTools.UnitTesting Namespace

Other Resources

Using the Assert Classes