public void should_return_a_random_string_from_the_specified_collection()
            {
                var values = new RandomStringValue("Foo", new TestStringSource());

                var value = (string)values.RandomValues(new {});

                Check.That(value).Matches(@"^(Bar|Baz|Quux)$");
            }
            public void should_return_the_name_of_the_string_collection_from_which_strings_are_drawn()
            {
                var value = new RandomStringValue("Foo", new TestStringSource());

                Check.That(value.Key).IsEqualTo("Foo");
            }