public void RollBackThroughRemove()
{
var storage = new DictionaryHistory <int, int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i, i);
}
storage.StoreCurrent(new TimeMarker(1));
storage.Remove(5);
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackTo(new TimeMarker(1));
Assert.AreEqual(maximumValue, storage.Count);
int index = 0;
foreach (var pair in storage)
{
Assert.AreEqual(index, pair.Key);
Assert.AreEqual(index, pair.Value);
index++;
}
}
public void RemoveWithUnknownKey()
{
var storage = new DictionaryHistory <int, int>();
int key = 5;
int value = 10;
storage.Add(key, value);
Assert.IsFalse(storage.Remove(value));
}
public void RemoveWithNullKey()
{
var storage = new DictionaryHistory <string, string>();
bool result = true;
Assert.DoesNotThrow(
() =>
{
result = storage.Remove(null);
});
Assert.IsFalse(result);
}
public void Remove()
{
var storage = new DictionaryHistory <int, int>();
int key = 5;
int value = 10;
storage.Add(key, value);
var result = storage.Remove(key);
Assert.IsTrue(result);
Assert.AreEqual(0, storage.Count);
Assert.IsFalse(storage.ContainsKey(key));
}
public void RemoveVoidsForwardStack()
{
var storage = new DictionaryHistory <int, int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i, i);
}
storage.StoreCurrent(new TimeMarker(1));
storage[5] = maximumValue;
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackTo(new TimeMarker(1));
storage.Remove(5);
storage.StoreCurrent(new TimeMarker(3));
storage.RollForwardTo(new TimeMarker(2));
Assert.AreEqual(maximumValue - 1, storage.Count);
int index = 0;
foreach (var pair in storage)
{
if (index < 5)
{
Assert.AreEqual(index, pair.Key);
Assert.AreEqual(index, pair.Value);
}
else
{
Assert.AreEqual(index + 1, pair.Key);
Assert.AreEqual(index + 1, pair.Value);
}
index++;
}
}