public static void DiffTest()
{
var s = new List <object>
{
pool[0],
pool[1],
pool[3],
pool[4]
};
var t = new List <object>
{
pool[0],
pool[1],
pool[2],
pool[3]
};
var result = BindableSnapshotCollection <object> .SequenceDiffer(s, t);
Assert.Equal(2, result.Length);
Assert.True(result[0].IsAdd);
Assert.Equal(2, result[0].OriginalIndex);
Assert.Same(pool[2], result[0].Item);
Assert.False(result[1].IsAdd);
Assert.Equal(3, result[1].OriginalIndex);
}
public void DiffTest()
{
var s = new List <object>
{
pool[0],
pool[1],
pool[3],
pool[4]
};
var t = new List <object>
{
pool[0],
pool[1],
pool[2],
pool[3]
};
var result = BindableSnapshotCollection <object> .SequenceDiffer(s, t);
Assert.AreEqual(result.Length, 2);
Assert.IsTrue(result[0].IsAdd);
Assert.AreEqual(result[0].OriginalIndex, 2);
Assert.AreSame(result[0].Item, pool[2]);
Assert.IsFalse(result[1].IsAdd);
Assert.AreEqual(result[1].OriginalIndex, 3);
}
public static void RandomDiffTest()
{
var r = new Random();
var s = new List <object>();
var t = new List <object>();
for (int i = 0; i < pool.Length; i++)
{
var obj = pool[r.Next(pool.Length)];
if (!s.Contains(obj))
{
s.Add(obj);
}
}
Assert.Equal(s.Distinct(), s);
for (int i = 0; i < pool.Length; i++)
{
var obj = pool[r.Next(pool.Length)];
if (!t.Contains(obj))
{
t.Add(obj);
}
}
Assert.Equal(t.Distinct(), t);
int offset = 0;
foreach (var a in BindableSnapshotCollection <object> .SequenceDiffer(s, t))
{
if (a.IsAdd)
{
s.Insert(a.OriginalIndex + (offset++), a.Item);
}
else
{
s.RemoveAt(a.OriginalIndex + (offset--));
}
}
Assert.Equal(t, s);
}
