public void PreviousAndNext()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.CurrentItem = threeItems[0]);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.NextItem());
Assert.AreEqual(threeItems[1], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.NextItem());
Assert.AreEqual(threeItems[2], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.PreviousItem());
Assert.AreEqual(threeItems[1], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
}
public void PreviousAndNextWithShuffle()
{
var randomService = new MockRandomService();
int randomNumber = 0;
int lastMaxValue = -1;
randomService.NextRandomNumberStub = maxValue =>
{
lastMaxValue = maxValue;
return randomNumber;
};
var manager = new PlaylistManager(3, randomService);
manager.AddAndReplaceItems(threeItems);
manager.Shuffle = true;
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.CurrentItem = threeItems[0]);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
randomNumber = 1;
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.NextItem());
Assert.AreEqual(1, lastMaxValue);
Assert.AreEqual(threeItems[2], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
randomNumber = 0;
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.NextItem());
Assert.AreEqual(0, lastMaxValue);
Assert.AreEqual(threeItems[1], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.PreviousItem());
Assert.AreEqual(threeItems[2], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.PreviousItem());
Assert.AreEqual(threeItems[0], manager.CurrentItem);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
}
public void NextWithShuffleAndRepeatAndOneItem()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems.Take(1));
manager.Shuffle = true;
manager.Repeat = true;
manager.CurrentItem = threeItems[0];
manager.NextItem();
Assert.AreEqual(threeItems[0], manager.CurrentItem);
}
public void PreviousAndNextWithClear()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
manager.CurrentItem = threeItems[1];
Assert.IsTrue(manager.CanPreviousItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.ClearItems());
Assert.IsFalse(manager.CanPreviousItem);
AssertHelper.ExpectedException<InvalidOperationException>(() => manager.PreviousItem());
manager.AddAndReplaceItems(threeItems);
manager.CurrentItem = threeItems[1];
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.ClearItems());
Assert.IsFalse(manager.CanNextItem);
AssertHelper.ExpectedException<InvalidOperationException>(() => manager.NextItem());
}
public void PreviousAndNextWithRepeat()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
manager.Repeat = true;
manager.CurrentItem = threeItems[0];
for (int i = 0; i < 5; i++)
{
Assert.AreEqual(threeItems[i % 3], manager.CurrentItem);
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
manager.Shuffle = true;
for (int i = 0; i < 5; i++)
{
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
}
public void ResetNextWithShuffle()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
manager.Shuffle = true;
manager.CurrentItem = threeItems[0];
for (int i = 0; i < 2; i++)
{
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
Assert.IsFalse(manager.CanNextItem);
manager.Reset();
for (int i = 0; i < 2; i++)
{
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
Assert.IsFalse(manager.CanNextItem);
}
