public void UpdateClearsForwardStack()
{
var storage = new ListHistory <int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
}
storage.StoreCurrent(new TimeMarker(1));
storage[5] = maximumValue;
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackTo(new TimeMarker(1));
storage[9] = maximumValue;
storage.StoreCurrent(new TimeMarker(3));
storage.RollForwardTo(new TimeMarker(2));
Assert.That(
storage,
Is.EquivalentTo(new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, maximumValue }));
}
public void ClearVoidsForwardStack()
{
var storage = new ListHistory <int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
}
storage.StoreCurrent(new TimeMarker(1));
storage[5] = maximumValue;
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackTo(new TimeMarker(1));
storage.Clear();
storage.Add(maximumValue + 1);
storage.StoreCurrent(new TimeMarker(3));
storage.RollForwardTo(new TimeMarker(2));
Assert.That(
storage,
Is.EquivalentTo(new int[] { maximumValue + 1 }));
}
public void RollForwardPastLastValue()
{
var storage = new ListHistory <int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackTo(new TimeMarker(6));
storage.RollForwardTo(new TimeMarker((ulong)(maximumValue + 1)));
Assert.That(
storage,
Is.EquivalentTo(new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }));
}
public void RollBackPastFirstValue()
{
var storage = new ListHistory <int>();
int maximumValue = 10;
for (int i = 1; i < maximumValue; i++)
{
storage.Add(i);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackTo(new TimeMarker(0));
Assert.That(
storage,
Is.EquivalentTo(
new int[] { }));
}
public void RollBackPastLastSnapshot()
{
var storage = new ListHistory <int>();
int maximumValue = 30;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
// The snapshot is at 20
storage.RollBackTo(new TimeMarker(16));
Assert.That(
storage,
Is.EquivalentTo(
new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }));
}
public void RollBackToLastSnapshot()
{
var storage = new ListHistory <int>();
int maximumValue = 30;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
// The first snapshot is at 1, the next one is 20 further so it is at 20
storage.RollBackTo(new TimeMarker(21));
Assert.That(
storage,
Is.EquivalentTo(
new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 }));
}
public void RollForwardToPastNextSnapshot()
{
var storage = new ListHistory <int>();
int maximumValue = 30;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
// The snapshot is at 21
storage.RollBackTo(new TimeMarker(16));
storage.RollForwardTo(new TimeMarker(26));
Assert.That(
storage,
Is.EquivalentTo(new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 }));
}
public void RollBackThroughRemove()
{
var storage = new ListHistory <int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
}
storage.StoreCurrent(new TimeMarker(1));
storage.Remove(5);
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackTo(new TimeMarker(1));
Assert.That(
storage,
Is.EquivalentTo(new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }));
}
public void RollBackMultipleTimes()
{
var storage = new ListHistory <int>();
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
storage.Add(i);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
for (int i = maximumValue; i > 0; i--)
{
storage.RollBackTo(new TimeMarker((ulong)i));
Assert.AreEqual(i, storage.Count);
for (int j = 1; j <= i; j++)
{
Assert.IsTrue(storage.Contains(j - 1));
}
}
}
public void RollBackWithNoValues()
{
var storage = new ListHistory <int>();
Assert.DoesNotThrow(() => storage.RollBackTo(new TimeMarker(0)));
}