private NullDataCursor CreateCursor(int size)
{
var data = Enumerable.Range(0, size).Select(x => new object()).ToArray();
var cur = new NullDataCursor(data);
return(cur);
}
public void Move_GetSetEnableSafeSet_ValueMustEqualSet()
{
var cur = new NullDataCursor(null);
cur.EnableSafeSet = true;
Assert.IsTrue(cur.EnableSafeSet);
cur.EnableSafeSet = false;
Assert.IsFalse(cur.EnableSafeSet);
}
public async Task Move_CallbackWasCalled()
{
var cur = new NullDataCursor(new object[] { new object() });
await cur.MoveAsync(0);
Assert.IsTrue(cur.IsOnMoved);
await cur.MoveAsync(-1);
Assert.IsTrue(cur.IsOnSkiped);
}
public async Task GetAsyncEnumerable_MoveAll_AllGot()
{
var datas = Enumerable.Range(0, 100).Select(x => new object()).ToArray();
var cur = new NullDataCursor(datas);
var c = cur.GetAsyncEnumerator();
var index = 0;
while (await c.MoveNextAsync())
{
var val = c.Current;
Assert.AreEqual(datas[index], val);
}
}
public async Task Move_MovedEventMustBeFired()
{
var cur = new NullDataCursor(new object[] { new object() });
IDataCursor <object> sender = null;
int index = -1;
cur.Moved += (o, e) =>
{
sender = o;
index = e;
};
await cur.MoveAsync(0);
Assert.AreEqual(cur, sender);
Assert.AreEqual(0, index);
sender = null;
index = -1;
await cur.MoveAsync(0);
}
public async Task Move_WhenSuccedPropertyChanged_FailNothingTodo()
{
var rand = new Random();
var range = Enumerable.Range(0, 10)
.Select(x => (object)rand.Next(0, 999))
.ToArray();
var cur = new NullDataCursor(range);
Assert.AreEqual(range.Length, cur.Count);
Assert.AreEqual(-1, cur.CurrentIndex);
var ok = await cur.MoveAsync(0);
Assert.IsTrue(ok);
Assert.AreEqual(0, cur.CurrentIndex);
Assert.AreEqual(range[0], cur.Current);
ok = await cur.MoveAsync(1);
Assert.IsTrue(ok);
Assert.AreEqual(1, cur.CurrentIndex);
Assert.AreEqual(range[1], cur.Current);
ok = await cur.MoveAsync(-1);
Assert.IsFalse(ok);
Assert.AreEqual(1, cur.CurrentIndex);
Assert.AreEqual(range[1], cur.Current);
ok = await cur.MoveAsync(9999999);
Assert.IsFalse(ok);
Assert.AreEqual(1, cur.CurrentIndex);
Assert.AreEqual(range[1], cur.Current);
cur.Dispose();
}
