public void Clear_BeforeLooping()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(3);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
list.Add(one);
list.Add(two);
list.Clear();
Assert.IsEmpty(list, "List should be empty as it has just been cleared");
Assert.AreEqual(-1, list.CurrentIndex, "The index should have been reset by the clear");
}
public void Contains_AboutToLoop()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(2);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
SimpleElement three = new SimpleElement() { String = "Three" };
list.Add(one);
list.Add(two);
Assert.IsTrue(list.Contains(two), "The element should be in the list");
Assert.IsTrue(list.Contains(one), "The element should be in the list");
Assert.IsFalse(list.Contains(three), "The element should not be in the list");
}
public void IndexOf_BeforeLooping()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(3);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
SimpleElement three = new SimpleElement() { String = "Three" };
list.Add(one);
list.Add(two);
Assert.AreEqual(1, list.IndexOf(two), "Index should be 1 as this is the second element");
Assert.AreEqual(0, list.IndexOf(one), "Index should be 0 as this is the first element");
Assert.AreEqual(-1, list.IndexOf(three), "Index should be -1 as the item is not in the list");
}
public void Enumerator_BeforeLooping()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(3);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
list.Add(one);
list.Add(two);
List<SimpleElement> actual = new List<SimpleElement>();
foreach (SimpleElement cur in list)
{
actual.Add(cur);
}
Assert.AreEqual(2, actual.Count, "The foreach should have yielded 2 items");
Assert.AreEqual(one, actual[0], "First yielded item is wrong");
Assert.AreEqual(two, actual[1], "Second yielded item is wrong");
}
public void IndexOf_AfterLooping()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(2);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
SimpleElement three = new SimpleElement() { String = "Three" };
list.Add(one);
list.Add(two);
list.Add(three);
Assert.AreEqual(1, list.IndexOf(two), "Index should be 1 as this is the second element");
Assert.AreEqual(-1, list.IndexOf(one), "Index should be -1 as this item has been replaced by new content");
Assert.AreEqual(0, list.IndexOf(three), "Index should be 0 as the item is the first to be added after looping");
}
public void Enumerator_AfterLooping_LongerList()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(3);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
SimpleElement three = new SimpleElement() { String = "Three" };
SimpleElement four = new SimpleElement() { String = "Four" };
SimpleElement five = new SimpleElement() { String = "Five" };
list.Add(one); // ==> 0
list.Add(two); // ==> 1
list.Add(three); // ==> 2
list.Add(four); // ==> 0
list.Add(five); // ==> 1
List<SimpleElement> actual = new List<SimpleElement>();
foreach (SimpleElement cur in list)
{
actual.Add(cur);
}
Assert.AreEqual(3, actual.Count, "The foreach should have yielded 3 items");
Assert.AreEqual(three, actual[0], "First yielded item is wrong");
Assert.AreEqual(four, actual[1], "Second yielded item is wrong");
Assert.AreEqual(five, actual[2], "Third yielded item is wrong");
}
public void Enumerator_AboutToLoop_LongerList()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(5);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
SimpleElement three = new SimpleElement() { String = "Three" };
SimpleElement four = new SimpleElement() { String = "Four" };
SimpleElement five = new SimpleElement() { String = "FIve" };
list.Add(one);
list.Add(two);
list.Add(three);
list.Add(four);
list.Add(five);
List<SimpleElement> actual = new List<SimpleElement>();
foreach (SimpleElement cur in list)
{
actual.Add(cur);
}
Assert.AreEqual(5, actual.Count, "The foreach should have yielded 5 items");
Assert.AreEqual(one, actual[0], "First yielded item is wrong");
Assert.AreEqual(two, actual[1], "Second yielded item is wrong");
Assert.AreEqual(three, actual[2], "Third yielded item is wrong");
Assert.AreEqual(four, actual[3], "Fourth yielded item is wrong");
Assert.AreEqual(five, actual[4], "Fifth yielded item is wrong");
}
public void Count_BeforeLooping()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(3);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
list.Add(one);
list.Add(two);
Assert.AreEqual(2, list.Count);
}
public void CopyTo_BeforeLooping_IndexGreaterThanZero()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(3);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
list.Add(one);
list.Add(two);
SimpleElement[] array = new SimpleElement[3];
list.CopyTo(array, 1);
Assert.AreEqual(default(SimpleElement), array[0]);
Assert.AreEqual(one, array[1]);
}
public void CopyTo_AfterLooping_FromIndexZero()
{
CircularList<SimpleElement> list = new CircularList<SimpleElement>(2);
SimpleElement one = new SimpleElement() { String = "One" };
SimpleElement two = new SimpleElement() { String = "Two" };
SimpleElement three = new SimpleElement() { String = "Three" };
list.Add(one);
list.Add(two);
list.Add(three);
SimpleElement[] array = new SimpleElement[2];
list.CopyTo(array, 0);
Assert.AreEqual(two, array[0]);
Assert.AreEqual(three, array[1]);
}