public void EqualsIgnoreOrderTest()
{
List <int> list1 = new List <int>();
List <int> list2 = new List <int>();
Assert.IsFalse(list1.EqualsIgnoreOrder(null));
Assert.IsFalse(IEnumerableExtensions.EqualsIgnoreOrder(null, list2));
Assert.IsTrue(IEnumerableExtensions.EqualsIgnoreOrder <int>(null, null));
// Empty should be true.
Assert.IsTrue(list1.EqualsIgnoreOrder(list2));
Assert.IsTrue(list2.EqualsIgnoreOrder(list1));
// Adding one to each should be equal
list1.Add(1);
list2.Add(1);
Assert.IsTrue(list1.EqualsIgnoreOrder(list2));
Assert.IsTrue(list2.EqualsIgnoreOrder(list1));
// Add 2 to both, but different orders.
list1.Add(2);
list2.Insert(0, 2);
Assert.IsTrue(list1.EqualsIgnoreOrder(list2));
Assert.IsTrue(list2.EqualsIgnoreOrder(list1));
// Add a third.
list1.Add(3);
list2.Add(3);
Assert.IsTrue(list1.EqualsIgnoreOrder(list2));
Assert.IsTrue(list2.EqualsIgnoreOrder(list1));
// Now, add a duplicate, should still be true.
list1.Add(3);
list2.Insert(0, 3);
Assert.IsTrue(list1.EqualsIgnoreOrder(list2));
Assert.IsTrue(list2.EqualsIgnoreOrder(list1));
// Add a duplicate to one list, but not the other, should start failing.
list1.Add(1);
Assert.IsFalse(list1.EqualsIgnoreOrder(list2));
Assert.IsFalse(list2.EqualsIgnoreOrder(list1));
// Add another value, but one that is different. Should still fail.
list2.Add(2);
Assert.IsFalse(list1.EqualsIgnoreOrder(list2));
Assert.IsFalse(list2.EqualsIgnoreOrder(list1));
}
