public void An_ArgumentException_is_raised()
{
// arrange
var repo = new FooRepository();
var service = new FooService(repo);
// act
service.Execute(Guid.Empty);
}
public void A_new_instance_is_created()
{
// arrange
var repository = new FooRepository();
// act
var service = new FooService(repository);
// assert
Assert.IsInstanceOf<FooService>(service);
}