DictionaryContainsKeyConstraint public class DictionaryContainsKeyConstraint : CollectionItemsEqualConstraint DictionaryContainsKeyConstraint is used to test whether a dictionary contains an expected object as a key. Documentation Code /* Error decompiling System.Collections.Generic.IEnumerable`1 NUnit.Framework.Constraints.DictionaryContainsKeyConstraint::GetBaseTypes(System.Type) */