public void RollForwardWithLocalChange()
{
var storage = new DictionaryHistory <int, int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i, i);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackToStart();
storage.Add(maximumValue + 1, maximumValue + 1);
for (int i = 1; i < maximumValue; i++)
{
storage.RollForwardTo(new TimeMarker((ulong)i));
Assert.AreEqual(i, storage.Count);
for (int j = 1; j <= i; j++)
{
Assert.IsTrue(storage.ContainsKey(j - 1));
}
}
}
public void RollBackToStart()
{
var storage = new DictionaryHistory <int, int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i, 1);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackToStart();
Assert.AreEqual(0, storage.Count);
}
public void RollForwardThroughRemove()
{
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.RollBackToStart();
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++;
}
}
public void RollForwardThroughClear()
{
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.Clear();
storage.Add(maximumValue + 1, maximumValue + 1);
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackToStart();
storage.RollForwardTo(new TimeMarker(2));
Assert.AreEqual(1, storage.Count);
Assert.IsTrue(storage.ContainsKey(maximumValue + 1));
}
public void RollBackToStartWithNoValues()
{
var storage = new DictionaryHistory <int, int>();
Assert.DoesNotThrow(() => storage.RollBackToStart());
}