public void InsertList_WhenSourceIsNull_ThrowsArgumentNullException()
{
List <int> items = null;
var itemsToAdd = new List <int> {
1, 2, 3
};
Assert.Throws <ArgumentNullException>(() => ListExtensions.InsertRange(items, 1, items));
}
public void InsertList_WhenStartIndexMoreThanSizeOfCollection_ThrowsArgumentOutOfRangeException()
{
var items = new List <int> {
1, 2, 3
};
var itemsToAdd = new List <int> {
4, 5, 6
};
Assert.Throws <ArgumentOutOfRangeException>(() => ListExtensions.InsertRange(items, 4, itemsToAdd));
}
public void InsertList_ToMiddle_InsertsCollection()
{
var expected = new List <int> {
1, 2, 4, 5, 6, 3
};
var items = new List <int> {
1, 2, 3
};
var itemsToAdd = new List <int> {
4, 5, 6
};
ListExtensions.InsertRange(items, 2, itemsToAdd);
CollectionAssert.AreEqual(expected, items);
}
public void InsertList_ToStart_PrependsCollection()
{
var expected = new List <int> {
4, 5, 6, 1, 2, 3
};
var items = new List <int> {
1, 2, 3
};
var itemsToAdd = new List <int> {
4, 5, 6
};
ListExtensions.InsertRange(items, 0, itemsToAdd);
CollectionAssert.AreEqual(expected, items);
}
public void InsertList_ToEnd_AppendsCollection()
{
var expected = new List <int> {
1, 2, 3, 4, 5, 6
};
var items = new List <int> {
1, 2, 3
};
var itemsToAdd = new List <int> {
4, 5, 6
};
ListExtensions.InsertRange(items, items.Count, itemsToAdd);
CollectionAssert.AreEqual(expected, items);
}
public void InsertList_ToMiddleShorterThanOriginalCollection_InsertsCollection()
{
var expected = new List <int> {
1, 2, 6, 3, 4, 5
};
var items = new List <int> {
1, 2, 3, 4, 5
};
var itemsToAdd = new List <int> {
6
};
ListExtensions.InsertRange(items, 2, itemsToAdd);
CollectionAssert.AreEqual(expected, items);
}
