public void CarPriceComparerCompareDoesNotSortCarsIfEqualPrice()
        {
            Car car1 = new Car()
            {
                Price = 0M
            };
            Car car2 = new Car()
            {
                Price = 0M
            };
            CarPriceComparer comparer = new CarPriceComparer();

            Assert.IsTrue(comparer.Compare(car1, car2) == 0);

            // TestTools Code
            UnitTest           test  = Factory.CreateTest();
            TestVariable <Car> _car1 = test.CreateVariable <Car>();
            TestVariable <Car> _car2 = test.CreateVariable <Car>();
            TestVariable <CarPriceComparer> _comparer = test.CreateVariable <CarPriceComparer>();

            test.Arrange(_car1, Expr(() => new Car()
            {
                Price = 0M
            }));
            test.Arrange(_car2, Expr(() => new Car()
            {
                Price = 0M
            }));
            test.Arrange(_comparer, Expr(() => new CarPriceComparer()));
            test.Assert.IsTrue(Expr(_comparer, _car1, _car2, (c1, c2, c3) => c1.Compare(c2, c3) == 0));
            test.Execute();
        }
        public void CarPriceComparerCompareSortsNullFirst()
        {
            Car car = new Car();
            CarPriceComparer comparer = new CarPriceComparer();

            Assert.IsTrue(comparer.Compare(car, null) > 0);

            // TestTools Code
            UnitTest           test = Factory.CreateTest();
            TestVariable <Car> _car = test.CreateVariable <Car>();
            TestVariable <CarPriceComparer> _comparer = test.CreateVariable <CarPriceComparer>();

            test.Arrange(_car, Expr(() => new Car()));
            test.Arrange(_comparer, Expr(() => new CarPriceComparer()));
            test.Assert.IsTrue(Expr(_comparer, _car, (c1, c2) => c1.Compare(c2, null) > 0));
            test.Execute();
        }