public void Add(TIndexKey key, DataPage <TPrimaryKey, TRow> page)
{
if (!_map.Add(key, page))
{
throw new Exception($"Unique index violation at key: '{key}'");
}
}
public void ContatinsValueBeforeAndAfterUpdatingValue()
{
var tree = new RedBlackTreeMap <int, int>();
int elementsCount = 1000;
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
if (!tree.ContainsKey(el))
{
tree.Add(el, el);
}
el += i;
}
}
// Check if values are contained, make them negative and check again. Skip zero...
for (int i = 1; i < elementsCount; i++)
{
if (!tree.ContainsValue(i))
{
Assert.Fail();
}
tree[i] = -i;
if (tree.ContainsValue(i))
{
Assert.Fail();
}
if (!tree.ContainsValue(-i))
{
Assert.Fail();
}
}
int last = -1;
int count = 0;
bool elementsAreSorted = true;
foreach (var item in tree)
{
if (last > item.Key)
{
elementsAreSorted = false;
}
last = item.Key;
count++;
}
Trace.WriteLine(tree.Count);
Assert.IsTrue(tree.Count == elementsCount &&
elementsAreSorted &&
count == elementsCount);
}
public void BalancingCheckWithRootRotation()
{
var tree = new RedBlackTreeMap <int, int>();
tree.Add(1, 1);
tree.Add(2, 2);
tree.Add(3, 3);
/*
* After balance the tree should look like this:
* 2
* / \
* 1 3
*/
Assert.IsTrue(tree.Root.Value == 2 &&
tree.Root.Left.Value == 1 &&
tree.Root.Right.Value == 3);
}
public void AddingOneMillionInts()
{
var tree = new RedBlackTreeMap <int, int>();
for (int i = 0; i < 1000000; i++)
{
tree.Add(i, i);
}
Assert.IsTrue(tree.Count == 1000000);
}
public DataPage <TPrimaryKey, TRow> Insert(TRow value)
{
var key = _keySelector(value);
var page = new DataPage <TPrimaryKey, TRow>(key, value);
if (_map.Add(key, page))
{
return(page);
}
throw new Exception($"Record existed at key: '{key}'");
}
public void SortedElementsAfterAddingAndRemoving()
{
var tree = new RedBlackTreeMap <int, int>();
int elementsCount = 100000;
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
if (!tree.ContainsKey(el))
{
tree.Add(el, el);
}
el += i;
}
}
bool removedEverything = true;
//Removing every second number
for (int i = 0; i < elementsCount; i += 2)
{
if (!tree.Remove(i))
{
removedEverything = false;
}
}
int last = -1;
int count = 0;
bool elementsAreSorted = true;
foreach (var item in tree)
{
if (last > item.Key)
{
elementsAreSorted = false;
}
last = item.Key;
count++;
}
Assert.IsTrue(tree.Count == count &&
elementsAreSorted &&
removedEverything);
}
public void RemoveRootEveryTimeUntilTreeElementsAreHalfed()
{
var tree = new RedBlackTreeMap <int, int>();
int elementsCount = 100000;
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
if (!tree.ContainsKey(el))
{
tree.Add(el, el);
}
el += i;
}
}
bool removedEverything = true;
while (tree.Count > elementsCount / 2)
{
if (!tree.Remove(tree.Root.Value))
{
removedEverything = false;
}
}
int last = -1;
int count = 0;
bool elementsAreSorted = true;
foreach (var item in tree)
{
if (last > item.Key)
{
elementsAreSorted = false;
}
last = item.Key;
count++;
}
Assert.IsTrue(tree.Count == count &&
elementsAreSorted &&
count == elementsCount / 2 &&
removedEverything);
}
public void CheckIfNodeIsInvalidatedAfterClearingAndAfterRemoval()
{
var tree = new RedBlackTreeMap <int, int>();
tree.Add(2, 2);
tree.Add(1, 1);
tree.Add(3, 3);
// Tree looks like this:
// 2
// / \
// 1 3
var node1 = tree.Root.Left;
var node2 = tree.Root;
var node3 = tree.Root.Right;
tree.Remove(2);
if (node2.Left != null || node2.Right != null)
{
Assert.Fail("2");
}
tree.Remove(3);
if (node3.Left != null || node3.Right != null)
{
Assert.Fail("3");
}
tree.Remove(1);
if (node1.Left != null || node1.Right != null)
{
Assert.Fail("1");
}
tree.Add(2, 2);
tree.Add(1, 1);
tree.Add(3, 3);
node1 = tree.Root.Left;
node2 = tree.Root;
node3 = tree.Root.Right;
tree.Clear();
Assert.IsTrue(node1.Left == null && node1.Right == null &&
node2.Left == null && node2.Right == null &&
node3.Left == null && node3.Right == null &&
tree.Root == null &&
tree.Count == 0);
}
public void RemoveAllExceptOne()
{
var tree = new RedBlackTreeMap <int, int>();
int elementsCount = 100000;
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
if (!tree.ContainsKey(el))
{
tree.Add(el, el);
}
el += i;
}
}
bool removedEverything = true;
for (int i = 0; i < elementsCount - 1; i++)
{
if (!tree.Remove(i))
{
removedEverything = false;
}
}
Assert.IsTrue(tree.Count == 1 &&
removedEverything &&
tree.Root.Value == elementsCount - 1 &&
tree.Root.Left == null &&
tree.Root.Right == null);
}
public void UpdatingElementsWithIndexerUsingTryGetValueMethodToGetValue()
{
var tree = new RedBlackTreeMap <int, int>();
int elementsCount = 100000;
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
if (!tree.ContainsKey(el))
{
tree.Add(el, el);
}
el += i;
}
}
bool removedEverything = true;
//Removing every second number
for (int i = 0; i < elementsCount; i += 2)
{
if (!tree.Remove(i))
{
removedEverything = false;
}
}
// Make all values negative
for (int i = 0; i < elementsCount; i++)
{
int value;
if (tree.TryGetValue(i, out value))
{
tree[value] = -value;
}
}
int last = -1;
int count = 0;
bool elementsAreSorted = true;
foreach (var item in tree)
{
if (item.Value > 0)
{
Assert.Fail();
}
if (last > item.Key)
{
elementsAreSorted = false;
}
last = item.Key;
count++;
}
Trace.WriteLine(tree.Count);
Assert.IsTrue(tree.Count == count &&
elementsAreSorted &&
removedEverything);
}
public void AddingAfterRemovingAllElements()
{
var tree = new RedBlackTreeMap <int, int>();
int elementsCount = 100000;
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
if (!tree.ContainsKey(el))
{
tree.Add(el, el);
}
el += i;
}
}
if (tree.Count != elementsCount)
{
Assert.Fail();
}
//Removing every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
tree.Remove(el);
el += i;
}
}
if (tree.Count != 0)
{
Assert.Fail();
}
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
for (int i = 7; i > 0; i -= 2)
{
int el = 0;
while (el < elementsCount)
{
if (!tree.ContainsKey(el))
{
tree.Add(el, el);
}
el += i;
}
}
int last = -1;
int count = 0;
bool elementsAreSorted = true;
foreach (var item in tree)
{
if (last > item.Key)
{
elementsAreSorted = false;
}
last = item.Key;
count++;
}
Assert.IsTrue(tree.Count == elementsCount &&
elementsAreSorted &&
count == elementsCount);
}