public IEnumerable<Product> GetPopularKeyboards()
{
var keyboard = new GenericSpecification<Product>(product=>product.Category==ProductCategory.KeyBoard);
var popular = new GenericSpecification<Product>(p=>p.AverageRatings>4);
var popularKeyboard = popular.And(keyboard);
return _repository.Get(popularKeyboard);
}
public void And_CreatesAndSpecification()
{
// Arrange
var spec = new GenericSpecification(false);
var anotherSpec = new GenericSpecification(true);
// Act
var actualSpec = spec.And(anotherSpec);
// Assert
Assert.That(actualSpec, Is.TypeOf <AndSpecification <TestingInfrastructure.DomainModeling.TestModels.TestAggregateRoot, long> >());
}
public void And_specification_is_satisfied_when_both_expressions_are_true_for_candidate_obect()
{
var candidateObject = new TestClass() { DepartmentName = "Sales", Salary = 5000 };
var salarySpecification = new GenericSpecification<TestClass>(t => t.Salary > 4000);
var departmentSpecification = new GenericSpecification<TestClass>(t=>t.DepartmentName=="Sales");
var andSpecification = salarySpecification.And(departmentSpecification);
var isSatisfied = andSpecification.IsSatisfiedBy(candidateObject);
Assert.IsTrue(isSatisfied);
}
