public void CtorTest()
{
const int tableSize = 88;
const int keySize = 3;
const int valueSize = 10;
PersistentHashTable hashTable = InitTable("ctor", tableSize, keySize, valueSize, 4);
try
{
Assert.AreEqual(tableSize, hashTable.GetTableSize());
Assert.AreEqual(keySize, hashTable.GetKeySize());
Assert.AreEqual(valueSize, hashTable.GetValueSize());
}
finally
{
hashTable.Close();
}
}
public void RemoveCollisionTest()
{
PersistentHashTable hashTable = InitTable("HashTableRemove", 20, 4, 4, 6);
try
{
//fill the table up with collisions
byte[] lastCollisionKey = FillTableWithCollisions(5, hashTable);
hashTable.Remove(lastCollisionKey);
hashTable.Put(lastCollisionKey, new byte[hashTable.GetValueSize()]);
}
finally
{
hashTable.Close();
}
}
private static byte[] FillTableWithCollisions(int targetHashToCollideOn, PersistentHashTable hashTable)
{
byte[] collisionKey = new byte[] { 0, 0, 0, 0 };
for (int run = 0; run < hashTable.GetTableSize(); run++)
{
collisionKey = GetNextCollisionKey(targetHashToCollideOn, hashTable.GetTableSize(), collisionKey);
hashTable.Put(collisionKey, new byte[] { 0, 0, 0, (byte)run });
}
//assert the table is full
try
{
hashTable.Put(new byte[] { 255, 255, 255, 255 }, new byte[hashTable.GetValueSize()]);
Assert.Fail("Should throw exception");
}
catch (IndexOutOfRangeException) {}
return(collisionKey);
}