public void RollForwardThroughRemove()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc = id => objects[id];
var storage = new HistoryObjectListHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Add(obj);
}
storage.StoreCurrent(new TimeMarker(1));
storage.RemoveAt(5);
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackToStart();
storage.RollForwardTo(new TimeMarker(2));
Assert.AreEqual(maximumValue - 1, storage.Count);
for (int i = 0; i < storage.Count; i++)
{
if (i < 5)
{
Assert.AreSame(objects[new HistoryId(i)], storage[i]);
}
else
{
Assert.AreSame(objects[new HistoryId(i + 1)], storage[i]);
}
}
}
public void RollForwardWithLocalChange()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc = id => objects[id];
var storage = new HistoryObjectListHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Add(obj);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackToStart();
var newObj = new MockHistoryObject(maximumValue + 1);
objects.Add(newObj.HistoryId, newObj);
storage.Add(newObj);
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.Contains(objects[new HistoryId(j - 1)]));
}
}
}
public void RollForwardThroughClear()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc = id => objects[id];
var storage = new HistoryObjectListHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Add(obj);
}
storage.StoreCurrent(new TimeMarker(1));
storage.Clear();
var newObj = new MockHistoryObject(maximumValue);
objects.Add(newObj.HistoryId, newObj);
storage.Add(newObj);
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackToStart();
storage.RollForwardTo(new TimeMarker(2));
Assert.AreEqual(1, storage.Count);
Assert.AreSame(objects[new HistoryId(maximumValue)], storage[0]);
}
public void RemoveItems()
{
var list = new HistoryObjectListHistory <MockHistoryObject>(FromId)
{
new MockHistoryObject(0),
new MockHistoryObject(1),
new MockHistoryObject(2),
new MockHistoryObject(3),
new MockHistoryObject(4),
new MockHistoryObject(5),
};
list.Remove(new MockHistoryObject(0));
Assert.IsFalse(list.Contains(new MockHistoryObject(0)));
list.Remove(new MockHistoryObject(1));
Assert.IsFalse(list.Contains(new MockHistoryObject(1)));
list.Remove(new MockHistoryObject(2));
Assert.IsFalse(list.Contains(new MockHistoryObject(2)));
list.Remove(new MockHistoryObject(3));
Assert.IsFalse(list.Contains(new MockHistoryObject(3)));
list.Remove(new MockHistoryObject(4));
Assert.IsFalse(list.Contains(new MockHistoryObject(4)));
list.Remove(new MockHistoryObject(5));
Assert.IsFalse(list.Contains(new MockHistoryObject(5)));
}
public void RollForwardToPastNextSnapshot()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc = id => objects[id];
var storage = new HistoryObjectListHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 30;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Add(obj);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
// The snapshot is at 21
storage.RollBackTo(new TimeMarker(15));
storage.RollForwardTo(new TimeMarker(25));
Assert.AreEqual(25, storage.Count);
for (int i = 0; i < storage.Count; i++)
{
Assert.AreSame(objects[new HistoryId(i)], storage[i]);
}
}
public void RollBackToStartWithNoValues()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc = id => objects[id];
var storage = new HistoryObjectListHistory <MockHistoryObject>(lookupFunc);
Assert.DoesNotThrow(() => storage.RollBackToStart());
}
public void RemoveItemsAtInvalidIndex()
{
var list = new HistoryObjectListHistory <MockHistoryObject>(FromId)
{
new MockHistoryObject(0),
new MockHistoryObject(1),
new MockHistoryObject(2),
new MockHistoryObject(3),
new MockHistoryObject(4),
new MockHistoryObject(5),
};
Assert.Throws <ArgumentOutOfRangeException>(() => list.RemoveAt(-1));
Assert.Throws <ArgumentOutOfRangeException>(() => list.RemoveAt(list.Count));
}
public void RollBackToStart()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc = id => objects[id];
var storage = new HistoryObjectListHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Add(obj);
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackToStart();
Assert.AreEqual(0, storage.Count);
}
public void IndexOfItems()
{
var list = new HistoryObjectListHistory <MockHistoryObject>(FromId)
{
new MockHistoryObject(0),
new MockHistoryObject(1),
new MockHistoryObject(2),
new MockHistoryObject(3),
new MockHistoryObject(4),
new MockHistoryObject(5),
};
Assert.AreEqual(0, list.IndexOf(new MockHistoryObject(0)));
Assert.AreEqual(1, list.IndexOf(new MockHistoryObject(1)));
Assert.AreEqual(2, list.IndexOf(new MockHistoryObject(2)));
Assert.AreEqual(3, list.IndexOf(new MockHistoryObject(3)));
Assert.AreEqual(4, list.IndexOf(new MockHistoryObject(4)));
Assert.AreEqual(5, list.IndexOf(new MockHistoryObject(5)));
}
public void UpdateClearsForwardStack()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc = id => objects[id];
var storage = new HistoryObjectListHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Add(obj);
}
storage.StoreCurrent(new TimeMarker(1));
var newObj = new MockHistoryObject(maximumValue);
objects.Add(newObj.HistoryId, newObj);
storage[5] = newObj;
storage.StoreCurrent(new TimeMarker(2));
storage.RollBackTo(new TimeMarker(1));
storage[9] = newObj;
storage.StoreCurrent(new TimeMarker(3));
storage.RollForwardTo(new TimeMarker(2));
Assert.AreEqual(maximumValue, storage.Count);
for (int i = 0; i < storage.Count; i++)
{
if (i != 9)
{
Assert.AreSame(objects[new HistoryId(i)], storage[i]);
}
else
{
Assert.AreSame(objects[new HistoryId(maximumValue)], storage[i]);
}
}
}
public void IndexerGetSetItems()
{
var list = new HistoryObjectListHistory <MockHistoryObject>(FromId)
{
new MockHistoryObject(0),
new MockHistoryObject(1),
new MockHistoryObject(2),
new MockHistoryObject(3),
new MockHistoryObject(4),
new MockHistoryObject(5),
};
Assert.AreEqual(new MockHistoryObject(0), list[0]);
list[0] = new MockHistoryObject(10);
Assert.AreEqual(new MockHistoryObject(10), list[0]);
Assert.AreEqual(new MockHistoryObject(2), list[2]);
list[2] = new MockHistoryObject(20);
Assert.AreEqual(new MockHistoryObject(20), list[2]);
Assert.AreEqual(new MockHistoryObject(5), list[5]);
list[5] = new MockHistoryObject(50);
Assert.AreEqual(new MockHistoryObject(50), list[5]);
}
public void IndexerGetItemsAtInvalidIndex()
{
var list = new HistoryObjectListHistory <MockHistoryObject>(FromId)
{
new MockHistoryObject(0),
new MockHistoryObject(1),
new MockHistoryObject(2),
new MockHistoryObject(3),
new MockHistoryObject(4),
new MockHistoryObject(5),
};
Assert.Throws <ArgumentOutOfRangeException>(
() =>
{
var result = list[-1];
// We're not expecting to get this far but code analysis says that
// we shouldn't have unused locals, unfortunately the compiler doesn't
// like it when we remove the local, so ..
Assert.IsNull(result);
Assert.Fail();
});
Assert.Throws <ArgumentOutOfRangeException>(
() =>
{
var result = list[list.Count];
// We're not expecting to get this far but code analysis says that
// we shouldn't have unused locals, unfortunately the compiler doesn't
// like it when we remove the local, so ..
Assert.IsNull(result);
Assert.Fail();
});
}
