public void shouldReturnProductIsLessThan2500AndMoreThan2000()
{
IList <Product> myList = new List <Product>
{
new Product("1", "product_1", 3000.00m),
new Product("2", "product_2", 2000.00m),
new Product("3", "product_3", 3001.06m),
new Product("4", "product_4", 2200.010m)
};
ISpecification <Product> ProductIsLessThan2500AndMoreThan2000sSpecification = new ItsPriceIsMoreThanSpecification(2000.00m).And(new ProductPriceIsLessThanSpecification(2500.00m));
IEnumerable <Product> expected = myList.Where(ProductIsLessThan2500AndMoreThan2000sSpecification.ToExpression().Compile());
Assert.Equal("product_4", expected.Single().Name);
}
public void OnlyReturnProductWhosePriceIsMoreThan3000()
{
IList <Product> myList = new List <Product>
{
new Product("1", "product_1", 3000.00m),
new Product("2", "product_2", 2000.010m),
new Product("3", "product_3", 3001.06m),
new Product("4", "product_4", 2200.010m)
};
ISpecification <Product> itsPriceIsMoreThanSpecification = new ItsPriceIsMoreThanSpecification(3000.00m);
IEnumerable <Product> expected = myList.Where(itsPriceIsMoreThanSpecification.ToExpression().Compile());
Assert.Equal("product_3", expected.Single().Name);
}
public void shouldReturnProductIsLessThan3000OrMoreThan2001()
{
IEnumerable <Product> myList = new List <Product>
{
new Product("1", "product_1", 3000.00m),
new Product("2", "product_2", 2000.00m),
new Product("3", "product_3", 3001.06m),
new Product("4", "product_4", 2200.010m)
};
ISpecification <Product> ProductIsLessThan3000OrMoreThan2001sSpecification = new ItsPriceIsMoreThanSpecification(3000.00m).Or(new ProductPriceIsLessThanSpecification(2001.00m));
IEnumerable <Product> expected = myList.Where(ProductIsLessThan3000OrMoreThan2001sSpecification.ToExpression().Compile()).ToList();
Assert.Equal("2", expected.Count().ToString());
Assert.Contains <Product>(expected, p => p.Name == "product_2");
Assert.Contains <Product>(expected, p => p.Name == "product_3");
}