public void IsSatisfiedByExample()
{
var goldCustomer = new Customer {
Name = "Customer1", Type = CustomerType.Gold
};
var silverCustomer = new Customer {
Name = "Customer2", Type = CustomerType.Silver
};
var bronzeCustomer = new Customer {
Name = "Customer3", Type = CustomerType.Bronze
};
var goldSpecification = new PredicateSpecification <Customer>(x => x.Type == CustomerType.Gold);
var specificCustomerSpecification = new PredicateSpecification <Customer>(x => x.Name == "Customer3");
// Gold customer
Assert.IsTrue(goldSpecification.IsSatisfiedBy(goldCustomer));
// Silver customer
Assert.IsFalse(goldSpecification.IsSatisfiedBy(silverCustomer));
// Customer 3
Assert.IsTrue(specificCustomerSpecification.IsSatisfiedBy(bronzeCustomer));
// Customer 2
Assert.IsFalse(specificCustomerSpecification.IsSatisfiedBy(silverCustomer));
}
public void Specification_Should_Save_And_Use_Predicate_Supplied_Correctly()
{
Predicate<int> predicate = x => x == 5;
var specification = new PredicateSpecification<int>(predicate);
Assert.AreEqual(specification.Predicate, predicate);
Assert.IsTrue(specification.IsSatisfiedBy(5));
Assert.IsFalse(specification.IsSatisfiedBy(3));
Assert.IsFalse(specification.IsSatisfiedBy(6));
}
public void Specification_Should_Save_And_Use_Predicate_Supplied_Correctly()
{
Predicate <int> predicate = x => x == 5;
var specification = new PredicateSpecification <int>(predicate);
Assert.AreEqual(specification.Predicate, predicate);
Assert.IsTrue(specification.IsSatisfiedBy(5));
Assert.IsFalse(specification.IsSatisfiedBy(3));
Assert.IsFalse(specification.IsSatisfiedBy(6));
}
public void IsSatisfiedByExample()
{
var goldCustomer = new Customer { Name = "Customer1", Type = CustomerType.Gold };
var silverCustomer = new Customer { Name = "Customer2", Type = CustomerType.Silver };
var notGoldSpecification = new PredicateSpecification<Customer>(x => x.Type == CustomerType.Gold).Not();
// Gold customer
Assert.IsFalse(notGoldSpecification.IsSatisfiedBy(goldCustomer));
// Silver customer
Assert.IsTrue(notGoldSpecification.IsSatisfiedBy(silverCustomer));
}
public void IsSatisfiedByExample()
{
var goldCustomer = new Customer {
Name = "Customer1", Type = CustomerType.Gold
};
var silverCustomer = new Customer {
Name = "Customer2", Type = CustomerType.Silver
};
var notGoldSpecification = new PredicateSpecification <Customer>(x => x.Type == CustomerType.Gold).Not();
// Gold customer
Assert.IsFalse(notGoldSpecification.IsSatisfiedBy(goldCustomer));
// Silver customer
Assert.IsTrue(notGoldSpecification.IsSatisfiedBy(silverCustomer));
}
public void IsSatisfiedByExample()
{
var goldCustomer = new Customer { Name = "Customer1", Type = CustomerType.Gold };
var silverCustomer = new Customer { Name = "Customer2", Type = CustomerType.Silver };
var bronzeCustomer = new Customer { Name = "Customer3", Type = CustomerType.Bronze };
var goldSpecification = new PredicateSpecification<Customer>(x => x.Type == CustomerType.Gold);
var specificCustomerSpecification = new PredicateSpecification<Customer>(x => x.Name == "Customer3");
// Gold customer
Assert.IsTrue(goldSpecification.IsSatisfiedBy(goldCustomer));
// Silver customer
Assert.IsFalse(goldSpecification.IsSatisfiedBy(silverCustomer));
// Customer 3
Assert.IsTrue(specificCustomerSpecification.IsSatisfiedBy(bronzeCustomer));
// Customer 2
Assert.IsFalse(specificCustomerSpecification.IsSatisfiedBy(silverCustomer));
}
public void ComplexComposition_LinqUsage_FoundMatchingElements()
{
IEnumerable <ComplexType> data = new ComplexContainer();
var q1 = from c in data where FooLengthOf2.IsSatisfiedBy(c) select c.Bar;
Assert.That(q1.First(), Is.EqualTo(2));
var q2 = data.Where(!new BarEven()).Select(c => c.Foo);
Assert.That(q2.First(), Is.EqualTo("12"));
Specification <ComplexType> enabled = new ComplexTypeEnabled(), barEven = new BarEven();
Func <ComplexType, bool> enabledOrDisabledAndBarEven = c => enabled.IsSatisfiedBy(c) || (!enabled.IsSatisfiedBy(c) && barEven.IsSatisfiedBy(c));
var q3 = from c in data where enabledOrDisabledAndBarEven(c) select c;
Assert.That(q3, Must.Have.Count(Is.EqualTo(6)));
}
public void Can_satisfy_specifications()
{
ISpecification<bool> spec = new PredicateSpecification<bool>(v => v);
Assert.AreEqual(true, spec.IsSatisfiedBy(true));
}
public void PredicateSpecification_PredicateTrue_True()
{
var specification = new PredicateSpecification<string>(s => true);
Assert.AreEqual(true, specification.IsSatisfiedBy("test"));
}
public void PredicateSpecification_PredicateFalse_False()
{
var specification = new PredicateSpecification<string>(s => false);
Assert.AreEqual(false, specification.IsSatisfiedBy("test"));
}