public void ContainsValue()
{
Hashtable hash1 = Helpers.CreateStringHashtable(100);
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
for (int i = 0; i < hash2.Count; i++)
{
string value = "Value_" + i;
Assert.True(hash2.ContainsValue(value));
}
Assert.False(hash2.ContainsValue("Non Existent Value"));
Assert.False(hash2.ContainsValue(101));
Assert.False(hash2.ContainsValue(null));
hash2.Add("Key_101", null);
Assert.True(hash2.ContainsValue(null));
string removedKey = "Key_1";
string removedValue = "Value_1";
hash2.Remove(removedKey);
Assert.False(hash2.ContainsValue(removedValue));
});
}
public void ContainsKey()
{
Hashtable hash1 = Helpers.CreateStringHashtable(100);
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
for (int i = 0; i < hash2.Count; i++)
{
string key = "Key_" + i;
Assert.True(hash2.ContainsKey(key));
Assert.True(hash2.Contains(key));
}
Assert.False(hash2.ContainsKey("Non Existent Key"));
Assert.False(hash2.Contains("Non Existent Key"));
Assert.False(hash2.ContainsKey(101));
Assert.False(hash2.Contains("Non Existent Key"));
string removedKey = "Key_1";
hash2.Remove(removedKey);
Assert.False(hash2.ContainsKey(removedKey));
Assert.False(hash2.Contains(removedKey));
});
}
public void Values_ModifyingHashtable_ModifiesCollection()
{
Hashtable hash = Helpers.CreateStringHashtable(100);
ICollection values = hash.Values;
// Removing a value from the hashtable should update the Values ICollection.
// This means that the Values ICollection no longer contains the value.
hash.Remove("Key_0");
IEnumerator enumerator = values.GetEnumerator();
while (enumerator.MoveNext())
{
Assert.NotEqual("Value_0", enumerator.Current);
}
}
public static void Keys_ModifyingHashtable_ModifiesCollection()
{
Hashtable hash = Helpers.CreateStringHashtable(100);
ICollection keys = hash.Keys;
// Removing a key from the hashtable should update the Keys ICollection.
// This means that the Keys ICollection no longer contains the key.
hash.Remove("Key_0");
IEnumerator enumerator = keys.GetEnumerator();
while (enumerator.MoveNext())
{
Assert.NotEqual("Key_0", enumerator.Current);
}
}
public void SynchronizedProperties()
{
// Ensure Synchronized correctly reflects a wrapped hashtable
var hash1 = Helpers.CreateStringHashtable(100);
var hash2 = Hashtable.Synchronized(hash1);
Assert.Equal(hash1.Count, hash2.Count);
Assert.Equal(hash1.IsReadOnly, hash2.IsReadOnly);
Assert.Equal(hash1.IsFixedSize, hash2.IsFixedSize);
Assert.True(hash2.IsSynchronized);
Assert.Equal(hash1.SyncRoot, hash2.SyncRoot);
for (int i = 0; i < hash2.Count; i++)
{
Assert.Equal("Value_" + i, hash2["Key_" + i]);
}
}
public void Clone(int count)
{
Hashtable hash1 = Helpers.CreateStringHashtable(count);
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
Hashtable clone = (Hashtable)hash2.Clone();
Assert.Equal(hash2.Count, clone.Count);
Assert.Equal(hash2.IsSynchronized, clone.IsSynchronized);
Assert.Equal(hash2.IsFixedSize, clone.IsFixedSize);
Assert.Equal(hash2.IsReadOnly, clone.IsReadOnly);
for (int i = 0; i < clone.Count; i++)
{
string key = "Key_" + i;
string value = "Value_" + i;
Assert.True(clone.ContainsKey(key));
Assert.True(clone.ContainsValue(value));
Assert.Equal(value, clone[key]);
}
});
}
