public void LambdaAny_ObservableSource_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection <int>()
{
-1, -2
};
var test = Observable.Expression(() => coll.Any(i => i > 0));
test.ValueChanged += (o, e) => update = true;
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
test.Detach();
coll.Add(1);
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
update = false;
coll.Remove(1);
Assert.IsTrue(update);
}
public void LambdaAny_ObservableSourceReset_Update()
{
var update = false;
var coll = new NotifyCollection <int>()
{
1, 2, 3
};
var test = Observable.Expression(() => coll.Any(i => i > 0));
test.ValueChanged += (o, e) => update = true;
coll.Clear();
Assert.IsTrue(update);
}
public void LambdaAny_ObservableSourceReset_Update()
{
var update = false;
var coll = new NotifyCollection<int>() { 1, 2, 3 };
var test = Observable.Expression(() => coll.Any(i => i > 0));
test.ValueChanged += (o, e) => update = true;
coll.Clear();
Assert.IsTrue(update);
}
public void LambdaAny_ObservableSource_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection<int>() { -1, -2 };
var test = Observable.Expression(() => coll.Any(i => i > 0));
test.ValueChanged += (o, e) => update = true;
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
test.Detach();
coll.Add(1);
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
update = false;
coll.Remove(1);
Assert.IsTrue(update);
}