public void TestBasicAndSpecification()
{
var bookList = DatabaseStub.Instance.Books;
var bookName = "The Phoenix Project";
var specification = new BookSpecification();
specification
.BooksSince(DateTime.Now.AddYears(-10))
.TitleStartingWith(bookName);
var expression = specification.Create();
var result = bookList.FindAll(x => expression.SatisfiedBy(x));
Assert.IsTrue(result.Count == 1);
Assert.IsTrue(result.FirstOrDefault()?.Title.StartsWith(bookName) ?? false);
}
public void TestBasicOrSpecification()
{
var bookList = DatabaseStub.Instance.Books;
var bookName = "The Goal";
var specification = new BookSpecification();
specification
.BooksSince(DateTime.Now.AddYears(-10))
.Or()
.TitleStartingWith(bookName);
var expression = specification.Create();
var result = bookList.FindAll(x => expression.SatisfiedBy(x));
Assert.IsTrue(result.Count > 1);
Assert.IsTrue(result.Exists(x => x.Title.StartsWith(bookName)));
}
