public void ModifyCollection_Add_Remove_Foreach_ReturnsExpectedCollection()
{
// Arrange
var initialCollection = new[] { 1, 2, 3, 4, 1, 2, 3 };
var collectionsToAdd = new[] { 2, 4 };
var collectionsToRemove = new[] { 1, 4, 2 };
var expectedResultCollection = new[] { 3, 1, 2, 3, 2, 4 };
var list = new ModifiableList <int>();
// Act
// Fill initial collection
foreach (var item in initialCollection)
{
list.Add(item);
}
list.Save();
// Add items inside foreach
int index = 0;
foreach (var item in list)
{
if (index < collectionsToAdd.Length)
{
list.Add(collectionsToAdd[index]);
}
index++;
}
list.Save();
// Remove items inside foreach
index = 0;
foreach (var item in list)
{
if (index < collectionsToRemove.Length)
{
list.Remove(collectionsToRemove[index]);
}
index++;
}
list.Save();
// Assert
Assert.True(IsCollectionsEqual(expectedResultCollection, list));
}
private bool IsCollectionsEqual(int[] expected, ModifiableList <int> list)
{
if (expected.Length != list.Count)
{
return(false);
}
int index = 0;
foreach (var item in list)
{
if (item != expected[index])
{
return(false);
}
index++;
}
return(true);
}