using NUnit.Framework;

namespace VideoGameQuotes.Api.Tests {
	[TestFixture]
	public class QuoteTests {

		[Test]
		[ExpectedException(typeof(CannotVoteTwiceException))]
		public void Should_not_allow_voting_in_the_same_direction_twice() {
			var quote = new Quote();
			var user = new User();

			quote.VoteFor(user, VoteDirection.Up);
			quote.VoteFor(user, VoteDirection.Up);
		}

		[Test]
		public void Should_remove_old_vote_if_voting_in_opposite_direction() {
			var quote = new Quote();
			var user = new User();

			quote.VoteFor(user, VoteDirection.Up);

			Assert.That(quote.UpVotes, Is.EqualTo(1));
			Assert.That(quote.DownVotes, Is.EqualTo(0));
			Assert.That(quote.Score, Is.EqualTo(1));

			quote.VoteFor(user, VoteDirection.Down);

			Assert.That(quote.UpVotes, Is.EqualTo(0));
			Assert.That(quote.DownVotes, Is.EqualTo(1));
			Assert.That(quote.Score, Is.EqualTo(-1));
		}

	}
}