public void Episodes_Should_Not_Duplicate_When_Reshuffling() { List <MediaItem> contents = Episodes(10); // normally returns 10 5 7 4 3 6 2 8 9 1 1 (note duplicate 1 at end) var state = new CollectionEnumeratorState { Seed = 8 }; var groupedMediaItems = contents.Map(mi => new GroupedMediaItem(mi, null)).ToList(); var shuffledContent = new ShuffledMediaCollectionEnumerator(groupedMediaItems, state); var list = new List <int>(); for (var i = 1; i <= 1000; i++) { shuffledContent.Current.IsSome.Should().BeTrue(); shuffledContent.Current.Do(x => list.Add(x.Id)); shuffledContent.MoveNext(); } for (var i = 0; i < list.Count - 1; i++) { if (list[i] == list[i + 1]) { Assert.Fail("List contains duplicate items"); } } }
public void State_Should_Reset_When_Invalid() { List <MediaItem> contents = Episodes(10); var state = new CollectionEnumeratorState { Index = 10, Seed = MagicSeed }; var groupedMediaItems = contents.Map(mi => new GroupedMediaItem(mi, null)).ToList(); var shuffledContent = new ShuffledMediaCollectionEnumerator(groupedMediaItems, state); shuffledContent.State.Index.Should().Be(0); shuffledContent.State.Seed.Should().NotBe(MagicSeed); }
public void State_Index_Should_Increment() { List <MediaItem> contents = Episodes(10); var state = new CollectionEnumeratorState(); var shuffledContent = new ShuffledMediaCollectionEnumerator(contents, state); for (var i = 0; i < 10; i++) { shuffledContent.State.Index.Should().Be(i); shuffledContent.MoveNext(); } }
public void State_Should_Impact_Iterator_Start() { List <MediaItem> contents = Episodes(10); var state = new CollectionEnumeratorState { Index = 5, Seed = MagicSeed }; var shuffledContent = new ShuffledMediaCollectionEnumerator(contents, state); for (var i = 6; i <= 10; i++) { shuffledContent.Current.IsSome.Should().BeTrue(); shuffledContent.Current.Map(x => x.Id).IfNone(-1).Should().Be(i); shuffledContent.State.Index.Should().Be(i - 1); shuffledContent.MoveNext(); } }
public void Duplicate_Check_Should_Ignore_Single_Item() { List <MediaItem> contents = Episodes(1); var state = new CollectionEnumeratorState(); var shuffledContent = new ShuffledMediaCollectionEnumerator(contents, state); var list = new List <int>(); for (var i = 1; i <= 10; i++) { shuffledContent.Current.IsSome.Should().BeTrue(); shuffledContent.Current.Do(x => list.Add(x.Id)); shuffledContent.MoveNext(); } list.Should().Equal(1, 1, 1, 1, 1, 1, 1, 1, 1, 1); }
public void Episodes_Should_Shuffle() { List <MediaItem> contents = Episodes(10); var state = new CollectionEnumeratorState(); var shuffledContent = new ShuffledMediaCollectionEnumerator(contents, state); var list = new List <int>(); for (var i = 1; i <= 10; i++) { shuffledContent.Current.IsSome.Should().BeTrue(); shuffledContent.Current.Do(x => list.Add(x.Id)); shuffledContent.MoveNext(); } list.Should().NotEqual(new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }); list.Should().BeEquivalentTo(1, 2, 3, 4, 5, 6, 7, 8, 9, 10); }