public void Collection_Ordering()
{
var collection = ToArray(ReadOnlyCollection.OrderBy(new int[0], item => item * 3));
Assert.AreEqual(0, collection.Count);
var source = new int[] { 9, 1, -3 };
collection = ToArray(ReadOnlyCollection.OrderBy(source, item => item));
Assert.AreEqual(3, collection.Count);
Assert.AreEqual(-3, collection[0]);
Assert.AreEqual(1, collection[1]);
Assert.AreEqual(9, collection[2]);
collection = ToArray(ReadOnlyCollection.OrderBy(source, item => System.Math.Abs(item)));
Assert.AreEqual(3, collection.Count);
Assert.AreEqual(1, collection[0]);
Assert.AreEqual(-3, collection[1]);
Assert.AreEqual(9, collection[2]);
collection = ToArray(ReadOnlyCollection.OrderByDescending(new int[0], item => item * 3));
Assert.AreEqual(0, collection.Count);
collection = ToArray(ReadOnlyCollection.OrderByDescending(source, item => item));
Assert.AreEqual(3, collection.Count);
Assert.AreEqual(9, collection[0]);
Assert.AreEqual(1, collection[1]);
Assert.AreEqual(-3, collection[2]);
collection = ToArray(ReadOnlyCollection.OrderByDescending(source, item => System.Math.Abs(item)));
Assert.AreEqual(3, collection.Count);
Assert.AreEqual(9, collection[0]);
Assert.AreEqual(-3, collection[1]);
Assert.AreEqual(1, collection[2]);
var sizeComparer = new StringLenComparer();
var col = new string[] { "333", "222", "111", "11", "1111", null, "aaa", "a", "" };
var collection2 = ToArray(ReadOnlyCollection.ThenBy(ReadOnlyCollection.OrderBy(col, item => item, sizeComparer), item => item, null));
Assert.AreEqual(9, collection2.Count);
Assert.AreEqual(null, collection2[0]);
Assert.AreEqual("", collection2[1]);
Assert.AreEqual("a", collection2[2]);
Assert.AreEqual("11", collection2[3]);
Assert.AreEqual("111", collection2[4]);
Assert.AreEqual("222", collection2[5]);
Assert.AreEqual("333", collection2[6]);
Assert.AreEqual("aaa", collection2[7]);
Assert.AreEqual("1111", collection2[8]);
collection2 = ToArray(ReadOnlyCollection.ThenBy(ReadOnlyCollection.OrderByDescending(col, item => item, sizeComparer), item => item, null));
Assert.AreEqual(9, collection2.Count);
Assert.AreEqual("1111", collection2[0]);
Assert.AreEqual("111", collection2[1]);
Assert.AreEqual("222", collection2[2]);
Assert.AreEqual("333", collection2[3]);
Assert.AreEqual("aaa", collection2[4]);
Assert.AreEqual("11", collection2[5]);
Assert.AreEqual("a", collection2[6]);
Assert.AreEqual("", collection2[7]);
Assert.AreEqual(null, collection2[8]);
collection2 = ToArray(ReadOnlyCollection.ThenByDescending(ReadOnlyCollection.OrderBy(col, item => item, sizeComparer), item => item, null));
Assert.AreEqual(9, collection2.Count);
Assert.AreEqual(null, collection2[0]);
Assert.AreEqual("", collection2[1]);
Assert.AreEqual("a", collection2[2]);
Assert.AreEqual("11", collection2[3]);
Assert.AreEqual("aaa", collection2[4]);
Assert.AreEqual("333", collection2[5]);
Assert.AreEqual("222", collection2[6]);
Assert.AreEqual("111", collection2[7]);
Assert.AreEqual("1111", collection2[8]);
}
public void List_Ordering()
{
var list = ReadOnlyList.OrderBy(new int[0], item => item * 3);
Assert.AreEqual(0, list.Count);
var source = new int[] { 9, 1, -3 };
list = ReadOnlyList.OrderBy(source, item => item);
Assert.AreEqual(3, list.Count);
Assert.AreEqual(-3, list[0]);
Assert.AreEqual(1, list[1]);
Assert.AreEqual(9, list[2]);
list = ReadOnlyList.OrderBy(source, item => System.Math.Abs(item));
Assert.AreEqual(3, list.Count);
Assert.AreEqual(1, list[0]);
Assert.AreEqual(-3, list[1]);
Assert.AreEqual(9, list[2]);
list = ReadOnlyList.OrderByDescending(new int[0], item => item * 3);
Assert.AreEqual(0, list.Count);
list = ReadOnlyList.OrderByDescending(source, item => item);
Assert.AreEqual(3, list.Count);
Assert.AreEqual(9, list[0]);
Assert.AreEqual(1, list[1]);
Assert.AreEqual(-3, list[2]);
list = ReadOnlyList.OrderByDescending(source, item => System.Math.Abs(item));
Assert.AreEqual(3, list.Count);
Assert.AreEqual(9, list[0]);
Assert.AreEqual(-3, list[1]);
Assert.AreEqual(1, list[2]);
var sizeComparer = new StringLenComparer();
var src = new string[] { "333", "222", "111", "11", "1111", null, "aaa", "a", "" };
var list2 = ReadOnlyList.ThenBy(ReadOnlyList.OrderBy(src, item => item, sizeComparer), item => item, null);
Assert.AreEqual(9, list2.Count);
Assert.AreEqual(null, list2[0]);
Assert.AreEqual("", list2[1]);
Assert.AreEqual("a", list2[2]);
Assert.AreEqual("11", list2[3]);
Assert.AreEqual("111", list2[4]);
Assert.AreEqual("222", list2[5]);
Assert.AreEqual("333", list2[6]);
Assert.AreEqual("aaa", list2[7]);
Assert.AreEqual("1111", list2[8]);
list2 = ReadOnlyList.ThenBy(ReadOnlyList.OrderByDescending(src, item => item, sizeComparer), item => item, null);
Assert.AreEqual(9, list2.Count);
Assert.AreEqual("1111", list2[0]);
Assert.AreEqual("111", list2[1]);
Assert.AreEqual("222", list2[2]);
Assert.AreEqual("333", list2[3]);
Assert.AreEqual("aaa", list2[4]);
Assert.AreEqual("11", list2[5]);
Assert.AreEqual("a", list2[6]);
Assert.AreEqual("", list2[7]);
Assert.AreEqual(null, list2[8]);
list2 = ReadOnlyList.ThenByDescending(ReadOnlyList.OrderBy(src, item => item, sizeComparer), item => item, null);
Assert.AreEqual(9, list2.Count);
Assert.AreEqual(null, list2[0]);
Assert.AreEqual("", list2[1]);
Assert.AreEqual("a", list2[2]);
Assert.AreEqual("11", list2[3]);
Assert.AreEqual("aaa", list2[4]);
Assert.AreEqual("333", list2[5]);
Assert.AreEqual("222", list2[6]);
Assert.AreEqual("111", list2[7]);
Assert.AreEqual("1111", list2[8]);
}
