public void SetThrowsExceptionWithNullActionTest()
{
var target = new Person();
Action action = () => target.Set(null);
action.ShouldThrow<ArgumentNullException>();
}
public void SetRunsActionAgainstInstanceTest()
{
var value = Guid.NewGuid();
var target = new Person();
var actual = target.Set(x => x.Id = value);
actual.Should().BeSameAs(target);
actual.Id.Should().Be(value);
}