public void AddAndExistsTest(IHashTable hashTable)
{
hashTable.Add("Existing string");
Assert.IsTrue(hashTable.Exists("Existing string"));
Assert.IsFalse(hashTable.Exists("Not existing string"));
}
public void DeleteTest(IHashTable hashTable)
{
hashTable.Add("TestString1");
hashTable.Add("TestString2");
hashTable.Add("TestString3");
Assert.IsTrue(hashTable.Delete("TestString1"));
Assert.IsFalse(hashTable.Delete("TestString1"));
Assert.IsTrue(hashTable.Delete("TestString3"));
Assert.IsFalse(hashTable.Exists("TestString1"));
Assert.IsFalse(hashTable.Exists("TestString3"));
Assert.IsTrue(hashTable.Exists("TestString2"));
}
/// <summary>
/// Performs an action depending on the entered command.
/// </summary>
/// <param name="hashTable">Hash table to work with.</param>
/// <param name="command">Command entered by user.</param>
public void CommandExecution(IHashTable hashTable, int command)
{
switch (command)
{
case 0:
break;
case 1:
{
Console.WriteLine("Enter the data of element you want to add");
var data = int.Parse(Console.ReadLine());
if (!hashTable.Add(data))
{
Console.WriteLine("The element with the given data already exists");
}
break;
}
case 2:
{
Console.WriteLine("Enter the data of element you want to delete");
var data = int.Parse(Console.ReadLine());
if (!hashTable.Delete(data))
{
Console.WriteLine("The element with the given data does not exists");
}
break;
}
case 3:
{
Console.WriteLine("Enter the data of hash table element");
var data = int.Parse(Console.ReadLine());
if (hashTable.Exists(data))
{
Console.WriteLine("The element with the given data exists");
}
else
{
Console.WriteLine("The element with the given data does not exists");
}
break;
}
case 4:
Console.WriteLine("The hash table:");
hashTable.Print();
break;
default:
Console.WriteLine("The command you entered is incorrect");
break;
}
}
private static void CommandExecution(IHashTable hashTable)
{
int number = int.Parse(Console.ReadLine());
while (number != 0)
{
switch (number)
{
case 1:
{
int value = ValueEntryRequest();
hashTable.Add(value);
}
break;
case 2:
{
int value = ValueEntryRequest();
hashTable.Remove(value);
}
break;
case 3:
{
int value = ValueEntryRequest();
if (hashTable.Exists(value))
{
Console.WriteLine("Value is in the hash table");
}
else
{
Console.WriteLine("Value is not in the hash table");
}
}
break;
case 4:
hashTable.Print();
break;
case 5:
hashTable.Clear();
break;
default:
Console.WriteLine("Enter correct number");
break;
}
Console.Write("Input number: ");
number = int.Parse(Console.ReadLine());
}
}
public void ExistsInEmptyHashTableTest(IHashTable hashTable) => Assert.IsFalse(hashTable.Exists("TestString"));