public static void SetSourceReset()
{
using var view = new ReadOnlySerialView <int>(new[] { 1, 2, 3 });
using var actual = view.SubscribeAll();
var newSource1 = new[] { 4, 5 };
view.SetSource(newSource1);
CollectionAssert.AreEqual(newSource1, view);
var expected = new List <EventArgs>
{
CachedEventArgs.CountPropertyChanged,
CachedEventArgs.IndexerPropertyChanged,
CachedEventArgs.NotifyCollectionReset,
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source"),
};
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
var newSource2 = new ObservableCollection <int> {
6, 7
};
view.SetSource(newSource2);
CollectionAssert.AreEqual(newSource2, view);
expected.AddRange(new EventArgs[]
{
CachedEventArgs.CountPropertyChanged,
CachedEventArgs.IndexerPropertyChanged,
CachedEventArgs.NotifyCollectionReset,
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source"),
});
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
public static void SetSourceReplace()
{
using var view = new ReadOnlySerialView <int>(new[] { 1, 2, 3 });
using var actual = view.SubscribeAll();
var newSource = new[] { 1, 2, 4 };
view.SetSource(newSource);
CollectionAssert.AreEqual(newSource, view);
var expected = new List <EventArgs>
{
CachedEventArgs.IndexerPropertyChanged,
Diff.CreateReplaceEventArgs(4, 3, 2),
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source"),
};
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
newSource = new[] { 5, 2, 4 };
view.SetSource(newSource);
CollectionAssert.AreEqual(newSource, view);
expected.AddRange(
new EventArgs[]
{
CachedEventArgs.IndexerPropertyChanged,
Diff.CreateReplaceEventArgs(5, 1, 0),
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source"),
});
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
public void SetSourceAdd()
{
using (var view = new ReadOnlySerialView <int>(new[] { 1, 2, 3 }))
{
using (var actual = view.SubscribeAll())
{
var newSource1 = new[] { 1, 2, 3, 4 };
view.SetSource(newSource1);
CollectionAssert.AreEqual(newSource1, view);
var expected = new List <EventArgs>
{
CachedEventArgs.CountPropertyChanged,
CachedEventArgs.IndexerPropertyChanged,
Diff.CreateAddEventArgs(4, 3),
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source"),
};
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
var newSource2 = new ObservableCollection <int> {
1, 2, 3, 4, 5
};
view.SetSource(newSource2);
CollectionAssert.AreEqual(newSource2, view);
expected.AddRange(
new EventArgs[]
{
CachedEventArgs.CountPropertyChanged,
CachedEventArgs.IndexerPropertyChanged,
Diff.CreateAddEventArgs(5, 4),
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source"),
});
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
}
}
public void SetSourceMove()
{
using (var view = new ReadOnlySerialView <int>(new[] { 1, 2, 3 }))
{
using (var actual = view.SubscribeAll())
{
var newSource = new[] { 1, 3, 2 };
view.SetSource(newSource);
CollectionAssert.AreEqual(newSource, view);
var expected = new List <EventArgs>
{
CachedEventArgs.IndexerPropertyChanged,
Diff.CreateMoveEventArgs(2, 2, 1),
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source")
};
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
newSource = new[] { 3, 1, 2 };
view.SetSource(newSource);
CollectionAssert.AreEqual(newSource, view);
expected.AddRange(
new EventArgs[]
{
CachedEventArgs.IndexerPropertyChanged,
Diff.CreateMoveEventArgs(1, 1, 0),
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source")
});
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
}
}
public static void SetSourceToEqual()
{
using var view = new ReadOnlySerialView <int>(new[] { 1, 2, 3 });
using var actual = view.SubscribeAll();
view.SetSource(new[] { 1, 2, 3 });
CollectionAssert.AreEqual(new[] { 1, 2, 3 }, view);
var expected = new[] { CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source") };
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
public void SetSourceNull()
{
var ints = new ObservableCollection <int>(new[] { 1, 2, 3 });
var view = new ReadOnlySerialView <int>(ints);
var changes = view.SubscribeAll();
view.SetSource(null);
CollectionAssert.IsEmpty(view);
CollectionAssert.AreEqual(Diff.ResetEventArgsCollection, changes, EventArgsComparer.Default);
}
public static void SetSourceNull()
{
using var view = new ReadOnlySerialView <int>(new[] { 1, 2, 3 });
using var actual = view.SubscribeAll();
view.SetSource(null);
CollectionAssert.IsEmpty(view);
var expected = new EventArgs[]
{
CachedEventArgs.CountPropertyChanged,
CachedEventArgs.IndexerPropertyChanged,
CachedEventArgs.NotifyCollectionReset,
CachedEventArgs.GetOrCreatePropertyChangedEventArgs("Source"),
};
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
