 actual
          string message, params object[] args );

CollectionAssert.IsSubsetOf( IEnumerable subset, IEnumerable superset );
CollectionAssert.IsSubsetOf( IEnumerable subset, IEnumerable superset,
          string message );
CollectionAssert.IsSubsetOf( IEnumerable subset, IEnumerable superset,
          string message, params object[] args );

CollectionAssert.IsNotSubsetOf( IEnumerable subset, IEnumerable superset);
CollectionAssert.IsNotSubsetOf( IEnumerable subset, IEnumerable superset,
          