public void RemoveNonExistingTest()
{
System.Collections.Immutable.IImmutableSet <int> emptySet = this.Empty <int>();
Assert.True(IsSame(emptySet, emptySet.Remove(5)));
// Also fill up a set with many elements to build up the tree, then remove from various places in the tree.
const int Size = 200;
var set = emptySet;
for (int i = 0; i < Size; i += 2)
{ // only even numbers!
set = set.Add(i);
}
// Verify that removing odd numbers doesn't change anything.
for (int i = 1; i < Size; i += 2)
{
var setAfterRemoval = set.Remove(i);
Assert.True(IsSame(set, setAfterRemoval));
}
}
private static void RemoveTestHelper <T>(System.Collections.Immutable.IImmutableSet <T> set, params T[] values)
{
Assert.NotNull(set);
Assert.NotNull(values);
Assert.True(IsSame(set, set.Except(Enumerable.Empty <T>())));
int initialCount = set.Count;
int removedCount = 0;
foreach (T value in values)
{
var nextSet = set.Remove(value);
Assert.NotSame(set, nextSet);
Assert.Equal(initialCount - removedCount, set.Count);
Assert.Equal(initialCount - removedCount - 1, nextSet.Count);
Assert.True(IsSame(nextSet, nextSet.Remove(value))); //, "Removing a non-existing element should not change the set reference.");
removedCount++;
set = nextSet;
}
Assert.Equal(initialCount - removedCount, set.Count);
}
private static void AddRemoveLoadTestHelper <T>(System.Collections.Immutable.IImmutableSet <T> set, T[] data)
{
Assert.NotNull(set);
Assert.NotNull(data);
foreach (T value in data)
{
var newSet = set.Add(value);
Assert.NotSame(set, newSet);
set = newSet;
}
foreach (T value in data)
{
Assert.True(set.Contains(value));
}
foreach (T value in data)
{
var newSet = set.Remove(value);
Assert.NotSame(set, newSet);
set = newSet;
}
}
private void RemoveFileFromList(System.String file)
{
System.Collections.Immutable.IImmutableSet <System.String> res;
System.Collections.Immutable.IImmutableSet <System.String> original;
while (myFilePathName.Contains(file))
{
do
{
original = myFilePathName;
res = System.Threading.Interlocked.CompareExchange <System.Collections.Immutable.IImmutableSet <System.String> >(ref myFilePathName, myFilePathName.Remove(file), original);
} while (myFilePathName.Contains(file));
}
}
