public void Test_CollectionGenerator_Correct_Lenght_10()
        {
            var output1 = collectionGenerator1.NextCollection(10);

            Assert.NotNull(output1);
            Assert.True(output1.Count <= 10);
        }
        public void Test_CollectionGenerator_Mock_INumberGenerator_Always_Full_Index10()
        {
            var output1 = FakecollectionGenerator.NextCollection(10);

            Assert.NotNull(output1);
            // becausewe only get 1 , so the collection has to be fully filled
            Assert.True(output1.Count == 10);
        }