public void Should_Check_Try_Get_Value_False()
{
//arrange
var key = "key";
var value = "value";
var map = new MyHashTable <string, string>();
map.Add(key, value);
string valueResult;
//act
var result = map.TryGetValue(key + "1", out valueResult);
//assert
result.ShouldBeEquivalentTo(false);
valueResult.ShouldBeEquivalentTo(null);
}
public void TestTryGetValue_Fail()
{
MyHashTable <string, int> hashTable = new MyHashTable <string, int>();
hashTable.Add("asd", 10);
int count = 1000;
for (int i = 0; i < count; i++)
{
hashTable.Add(i.ToString(), i);
}
int value;
bool found = hashTable.TryGetValue("qwe", out value);
Assert.AreEqual(false, found);
Assert.AreEqual(0, value);
}
static void Main()
{
MyHashTable <string, string> hashtable = new MyHashTable <string, string>();
//Add functions
//Contains and ContainsKey functions used for asserting
hashtable.Add("Mark", "Football player");
hashtable.Add(new KeyValuePair <string, string>("Jerry", "Engineer"));
hashtable.Add("Tina", "Ballerina");
hashtable.Add(new KeyValuePair <string, string>("Susan", "Architect"));
Debug.Assert(hashtable.Count == 4);
Debug.Assert(hashtable.Contains(new KeyValuePair <string, string>("Jerry", "Engineer")) == true);
Debug.Assert(hashtable.ContainsKey("Tina") == true);
//Prints hashtable
Console.WriteLine("Table: ");
foreach (KeyValuePair <string, string> pair in hashtable)
{
Console.WriteLine(pair.Key + " - " + pair.Value);
}
Console.WriteLine();
Console.WriteLine("Keys only: ");
foreach (string key in hashtable.Keys)
{
Console.WriteLine(key);
}
Console.WriteLine();
Console.WriteLine("Value only: ");
foreach (string value in hashtable.Values)
{
Console.WriteLine(value);
}
//Remove functions
hashtable.Remove("Mark");
hashtable.Remove(new KeyValuePair <string, string> ("Tina", "Ballerina"));
Debug.Assert(hashtable.Count == 2);
Debug.Assert(hashtable.ContainsKey("Tina") == false);
Debug.Assert(hashtable.Contains(new KeyValuePair <string, string>("Mark", "Football player")) == false);
Console.WriteLine();
Console.WriteLine("Table with Mark and Tina using both Remove methods: ");
foreach (KeyValuePair <string, string> pair in hashtable)
{
Console.WriteLine(pair.Key + " - " + pair.Value);
}
//Try Get Value function
Console.WriteLine();
string gotValue = "";
if (hashtable.TryGetValue("Jerry", out gotValue))
{
Console.WriteLine("Value out of key 'Jerry' using TryGetValue: ");
Console.WriteLine(gotValue);
}
Debug.Assert(gotValue == "Engineer");
//Clear function
Console.WriteLine();
Console.WriteLine("Table cleared: ");
hashtable.Clear();
foreach (KeyValuePair <string, string> pair in hashtable)
{
Console.WriteLine(pair.Key + " - " + pair.Value);
}
Debug.Assert(hashtable.Count == 0);
Console.WriteLine();
}
