public void ConstraintExpressionContainAnd()
        {
            var constraintExpression = new ConstraintExpression();
            var constraint           = constraintExpression.Contain(8).And.Contain(7);
            var collection1          = new List <int> {
                1, 2, 3, 4, 5, 6, 7, 8
            };

            Assert.That(collection1, constraint);
        }
        public void ConstraintExpressionContainUsing()
        {
            var constraintExpression = new ConstraintExpression();
            var constraint           = constraintExpression.Contain(8).Using(myIntComparer);
            var collection1          = new List <int> {
                1, 2, 3, 4, 5, 6, 7, 8
            };

            Assert.That(collection1, constraint);
        }