public void TestListItemMover()
{
IList <int> result;
int[] indicies = new int[] { };
Assert.IsFalse(ListReorderUtil.CanReorder(indicies, 0, ReorderDirection.Beginning));
Assert.IsFalse(ListReorderUtil.CanReorder(indicies, 0, ReorderDirection.Beginning));
Assert.IsFalse(ListReorderUtil.CanReorder(indicies, 10, ReorderDirection.End));
Assert.IsFalse(ListReorderUtil.CanReorder(indicies, 10, ReorderDirection.Beginning));
// last item in a list 6 long, move it all the way to the beginning
result = indicies = new int[] { 5 };
AssertPlus.ExceptionThrown <Exception>(() => ListReorderUtil.CanReorder(indicies, 5, ReorderDirection.Beginning));
for (int i = 0; i < 5; i++)
{
Assert.IsTrue(ListReorderUtil.CanReorder(result, 6, ReorderDirection.Beginning));
result = ListReorderUtil.Reorder(result, 6, ReorderDirection.Beginning);
Assert.AreEqual(4 - i, result[0]);
}
Assert.AreEqual(0, result[0]);
Assert.IsFalse(ListReorderUtil.CanReorder(result, 6, ReorderDirection.Beginning));
// now move it all the way back to the end
for (int i = 0; i < 5; i++)
{
Assert.IsTrue(ListReorderUtil.CanReorder(result, 6, ReorderDirection.End));
result = ListReorderUtil.Reorder(result, 6, ReorderDirection.End);
Assert.AreEqual(1 + i, result[0]);
}
Assert.AreEqual(5, result[0]);
Assert.IsFalse(ListReorderUtil.CanReorder(result, 6, ReorderDirection.End));
indicies = new int[] { 1, 2 };
Assert.IsTrue(ListReorderUtil.CanReorder(indicies, 3, ReorderDirection.Beginning));
Assert.IsFalse(ListReorderUtil.CanReorder(indicies, 3, ReorderDirection.End));
for (int i = 3; i < 5; i++)
{
result = ListReorderUtil.Reorder(indicies, i, ReorderDirection.Beginning);
Assert.AreEqual(result[0], 0);
Assert.AreEqual(result[1], 1);
}
result = ListReorderUtil.Reorder(indicies, 4, ReorderDirection.End);
Assert.AreEqual(result[0], 2);
Assert.AreEqual(result[1], 3);
}
public void TestUnpacked()
{
int[] indicies = new int[] { 1, 3 };
Assert.IsTrue(ListReorderUtil.CanReorder(indicies, 4, ReorderDirection.Beginning));
IList <int> result = ListReorderUtil.Reorder(indicies, 4, ReorderDirection.Beginning);
Assert.AreEqual(result[0], 1);
Assert.AreEqual(result[1], 2);
indicies = new int[] { 2, 4, 6 };
Assert.IsTrue(ListReorderUtil.CanReorder(indicies, 7, ReorderDirection.Beginning));
result = ListReorderUtil.Reorder(indicies, 7, ReorderDirection.Beginning);
Assert.IsTrue(result.SequenceEqual(new int[] { 2, 4, 5 }));
Assert.IsTrue(ListReorderUtil.CanReorder(result, 7, ReorderDirection.End));
result = ListReorderUtil.Reorder(result, 7, ReorderDirection.End);
Assert.IsTrue(result.SequenceEqual(new int[] { 3, 4, 5 }));
Assert.IsTrue(ListReorderUtil.CanReorder(result, 7, ReorderDirection.Beginning));
result = ListReorderUtil.Reorder(result, 7, ReorderDirection.Beginning);
Assert.IsTrue(result.SequenceEqual(new int[] { 2, 3, 4 }));
}
