using System; using System.Collections; namespace NUnit.Framework.Constraints { public class CollectionSupersetConstraint : CollectionItemsEqualConstraint { private IEnumerable _expected; public override string DisplayName => "SupersetOf"; public override string Description => "superset of " + MsgUtils.FormatValue(_expected); public CollectionSupersetConstraint(IEnumerable expected) : base(expected) { _expected = expected; } protected override bool Matches(IEnumerable actual) { return Tally(actual).TryRemove(_expected); } public CollectionSupersetConstraint Using<TSupersetType, TSubsetType>(Func<TSupersetType, TSubsetType, bool> comparison) { Func<TSubsetType, TSupersetType, bool> comparison2 = (TSubsetType actual, TSupersetType expected) => comparison(expected, actual); Using(EqualityAdapter.For(comparison2)); return this; } } }