public void SatisfyBySpecification()
{
var firstSpec = new SpecificationQueryStrategy <Customer>(x => x.Name.Equals("Random Name"));
var secondSpec = new SpecificationQueryStrategy <Customer>(x => x.Id == 1);
var options = new QueryOptions <Customer>()
.WithFilter(firstSpec)
.WithFilter(secondSpec);
Assert.Equal(firstSpec.And(secondSpec).Predicate.ToString(), ((IQueryOptions <Customer>)options).SpecificationStrategy.Predicate.ToString());
}
public static ISpecificationQueryStrategy <T> OnCondition <T>(this SpecificationQueryStrategy <T> queryStrategy, bool condition) where T : class
{
Check.NotNull(queryStrategy, "queryStrategy");
if (condition)
{
return(queryStrategy);
}
var defaultQueryStrategy = new DefaultSpecificationQueryStrategy <T>();
return(defaultQueryStrategy);
}
public void FindBySpecification()
{
var product = new Product {
Price = 99
};
var spec = new SpecificationQueryStrategy <Product>(p => p.Price < 100);
Assert.True(spec.IsSatisfiedBy(product));
product.Price = 100;
Assert.False(spec.IsSatisfiedBy(product));
}
public void FindByNotCompositeSpecification()
{
var product = new Product {
Price = 99, Name = "Windows XP Professional"
};
var spec = new SpecificationQueryStrategy <Product>(p => p.Price < 100).Not();
Assert.False(spec.IsSatisfiedBy(product));
product.Price = 100;
Assert.True(spec.IsSatisfiedBy(product));
}
public void Spec_ToString()
{
var spec = new SpecificationQueryStrategy <Product>(p => p.Price < 100).Or(p => p.Name.Equals("Windows XP Professional"));
Assert.Equal("SpecificationQueryStrategy<Product>: [ Predicate = p => ((p.Price < 100) OrElse p.Name.Equals(\"Windows XP Professional\")) ]", spec.ToString());
}
