public void Can_bench_specification_extension_method_performance()
{
var stopwatch = new Stopwatch();
const int trials = 1000;
ISpecification <int> isGreaterThanThree = new PredicateSpecification <int>(v => v > 3);
ISpecification <int> isLessThanFive = new PredicateSpecification <int>(v => v < 5);
var isFour = isGreaterThanThree.And(isLessThanFive);
stopwatch.Start();
for (var i = 0; i < trials; i++)
{
isFour.IsSatisfiedBy(2 + 2);
}
stopwatch.Stop();
Trace.WriteLine(stopwatch.Elapsed);
stopwatch.Start();
for (var i = 0; i < trials; i++)
{
(2 + 2).Satisfies(isFour);
}
stopwatch.Stop();
Trace.WriteLine(stopwatch.Elapsed);
}
public void Can_chain_specifications()
{
ISpecification <int> isGreaterThanThree = new PredicateSpecification <int>(v => v > 3);
ISpecification <int> isLessThanFive = new PredicateSpecification <int>(v => v < 5);
var isFour = isGreaterThanThree.And(isLessThanFive);
Assert.AreEqual(true, isFour.IsSatisfiedBy(2 + 2));
Assert.AreEqual(true, (2 + 2).Satisfies(isFour));
}