public void Test_MemoryLeak_BindSource()
{
var v = new TestViewModel();
var v2 = new TestViewModel2();
var reference = new WeakReference(v);
var reference2 = new WeakReference(v2);
int changeCount = 0;
var bindSource = new BindContext(v, "TestViewModel2.Name");
bindSource.SourceMode = SourceMode.Property;
bindSource.SourceChanged += (sender, args) =>
{
changeCount++;
Assert.AreNotEqual(args.OldSource, args.NewSource);
Assert.AreEqual(SourceMode.Property, args.SourceMode);
};
v.TestViewModel2 = v2;
Assert.AreEqual(0, changeCount);
v2 = null;
v.TestViewModel2 = null;
GC.Collect();
Assert.IsFalse(reference2.IsAlive);
v = null;
GC.Collect();
Assert.IsFalse(reference.IsAlive);
GC.KeepAlive(bindSource);
}
public void Test_BindSource_IndexPropertyDictionary()
{
var viewModel = new TestViewModel();
var bindSource = new BindContext(viewModel, "TestViewModel2.StringValues[yohan]");
Assert.IsNull(bindSource.Source);
Assert.IsNull(bindSource.Value);
var viewModel2 = new TestViewModel2();
viewModel.TestViewModel2 = viewModel2;
Assert.IsNull(bindSource.Source);
Assert.IsNull(bindSource.Value);
var dictionary = new Dictionary <string, string>();
viewModel.TestViewModel2.StringValues = dictionary;
Assert.AreEqual(dictionary, bindSource.Source);
Assert.IsNull(bindSource.Value);
viewModel.TestViewModel2.StringValues = new Dictionary <string, string>();
viewModel.TestViewModel2.StringValues.Add("yohan", "1");
Assert.AreEqual("1", bindSource.Value);
}
public void Test_MemoryLeak_WeakBinding_AttachEvent()
{
var viewModel = new TestViewModel();
var viewModel2 = new TestViewModel2();
var reference = new WeakReference(viewModel2);
var reference2 = new WeakReference(viewModel);
WeakBinding binding = new WeakPropertyBinding(viewModel2, "Name", viewModel, "Name")
.Initialize <WeakPropertyBinding>()
.SetMode(BindMode.TwoWay)
.AttachTargetEvent("TestViewModelEvent");
viewModel.Name = Name1;
Assert.AreEqual(viewModel2.Name, Name1);
viewModel2.Name = Name2;
Assert.AreNotEqual(viewModel.Name, Name2);
viewModel2.RaiseTestViewModelEvent();
Assert.AreEqual(viewModel.Name, Name2);
viewModel2 = null;
GC.Collect();
Assert.IsFalse(reference.IsAlive);
viewModel = null;
GC.Collect();
Assert.IsFalse(reference2.IsAlive);
GC.KeepAlive(binding);
}
public void Test_WeakMethodBinding_TargetMethod_2()
{
var viewModel2 = new TestViewModel2();
var viewModel = new TestViewModel();
var button = new Button();
var binding = new WeakMethodBinding(button, null, viewModel2, null)
.Initialize <WeakMethodBinding>()
.AttachSourceMethod(new BindContext(viewModel, null), "AddAge", null)
.AttachSourceCanInvokeMethod(new BindContext(viewModel, null), "CanAddAge", null)
.AttachTargetEvent("Click")
.OfType <WeakMethodBinding>();
Assert.AreEqual(0, viewModel.Age);
button.PerformClick();
Assert.AreEqual(1, viewModel.Age);
button.PerformClick();
Assert.AreEqual(2, viewModel.Age);
button.PerformClick();
Assert.AreEqual(2, viewModel.Age);
binding.DetachSourceCanInvokeMethod();
button.PerformClick();
Assert.AreEqual(3, viewModel.Age);
binding.DetachSourceMethod();
button.PerformClick();
Assert.AreEqual(3, viewModel.Age);
}
public void Test_WeakCollectionBinding_OneWayToTarget()
{
var viewModel = new TestViewModel();
var view = new TestView();
new WeakCollectionBinding(viewModel, "TestViewModelCollection", view, "TestViewModelCollections")
.Initialize <WeakCollectionBinding>()
.SetMode(BindMode.OneWayToSource);
view.TestViewModelCollections = new List <TestViewModel2>();
var collections = new ObservableCollection <TestViewModel2>();
viewModel.TestViewModelCollection = collections;
var viewModel2 = new TestViewModel2();
collections.Add(viewModel2);
collections.Add(new TestViewModel2());
Assert.AreEqual(2, view.TestViewModelCollections.Count);
Assert.AreEqual(viewModel2, view.TestViewModelCollections[0]);
collections.RemoveAt(0);
Assert.AreEqual(1, view.TestViewModelCollections.Count);
collections.Clear();
Assert.AreEqual(0, view.TestViewModelCollections.Count);
}
public void Test_WeakCollectionBinding_TwoWay()
{
var viewModel = new TestViewModel();
var viewModel3 = new TestViewModel3();
new WeakCollectionBinding(viewModel3, "TestViewModelCollection", viewModel, "TestViewModelCollection")
.Initialize <WeakCollectionBinding>()
.SetMode(BindMode.TwoWay);
viewModel3.TestViewModelCollection = new ObservableCollection <TestViewModel2>();
viewModel.TestViewModelCollection = new ObservableCollection <TestViewModel2>();
var viewModel2 = new TestViewModel2();
viewModel3.TestViewModelCollection.Add(viewModel2);
Assert.AreEqual(1, viewModel.TestViewModelCollection.Count);
Assert.AreEqual(viewModel2, viewModel.TestViewModelCollection[0]);
viewModel2 = new TestViewModel2();
viewModel.TestViewModelCollection.Add(viewModel2);
Assert.AreEqual(2, viewModel3.TestViewModelCollection.Count);
Assert.AreEqual(viewModel2, viewModel3.TestViewModelCollection[1]);
viewModel.TestViewModelCollection.Clear();
Assert.AreEqual(0, viewModel3.TestViewModelCollection.Count);
viewModel2 = new TestViewModel2();
viewModel3.TestViewModelCollection.Add(viewModel2);
Assert.AreEqual(1, viewModel.TestViewModelCollection.Count);
viewModel3.TestViewModelCollection.RemoveAt(0);
Assert.AreEqual(0, viewModel.TestViewModelCollection.Count);
}
public void Test_BindSource_RecurisonProperty2()
{
var viewModel = new TestViewModel();
var bindSource = new BindContext(viewModel, "TestViewModel2.TestViewModel3.Name");
Assert.AreEqual(null, bindSource.Source);
Assert.AreEqual(null, bindSource.Value);
Assert.AreEqual(null, bindSource.PropertyType);
var viewModel2 = new TestViewModel2();
viewModel.TestViewModel2 = viewModel2;
Assert.AreEqual(null, bindSource.Source);
Assert.AreEqual(null, bindSource.Value);
Assert.AreEqual(null, bindSource.PropertyType);
var viewModel3 = new TestViewModel3();
viewModel2.TestViewModel3 = viewModel3;
Assert.AreEqual(viewModel3, bindSource.Source);
Assert.AreEqual(typeof(string), bindSource.PropertyType);
viewModel3.Name = Name;
Assert.AreEqual(Name, bindSource.Value);
}
public void Test_BindSource_IndexPropertyInt()
{
var viewModel = new TestViewModel();
var bindSource = new BindContext(viewModel, "TestViewModel2.TestViewModel3.IntValues[1]");
var viewModel2 = new TestViewModel2();
viewModel.TestViewModel2 = viewModel2;
var viewModel3 = new TestViewModel3();
viewModel2.TestViewModel3 = viewModel3;
Assert.AreEqual(null, bindSource.PropertyType);
Assert.AreEqual(null, bindSource.Value);
var list = new ObservableCollection <int>();
viewModel3.IntValues = list;
Assert.AreEqual(list, bindSource.Source);
Assert.AreEqual(typeof(int), bindSource.PropertyType);
Assert.AreEqual(default(int), bindSource.Value);
list.Add(1);
list.Add(2);
Assert.AreEqual(2, bindSource.Value);
bindSource.Value = 2;
Assert.AreEqual(2, list[1]);
list.RemoveAt(1);
Assert.AreEqual(default(int), bindSource.Value);
}
public void Test_BindingEngine_ClearBinding_Object_Property_Expression()
{
var viewModel = new TestViewModel();
var viewModel2 = new TestViewModel2();
var viewModel22 = new TestViewModel2();
BindingEngine.SetPropertyBinding(viewModel, "Age", viewModel2, "Age");
BindingEngine.SetPropertyBinding(viewModel, "Age", viewModel22, "Age");
viewModel2.Age = 2;
Assert.AreEqual(viewModel.Age, 2);
viewModel22.Age = 3;
Assert.AreEqual(viewModel.Age, 3);
BindingEngine.ClearBinding(viewModel, model => model.Age);
viewModel2.Age = 4;
Assert.AreNotEqual(viewModel.Age, 4);
viewModel22.Age = 5;
Assert.AreNotEqual(viewModel.Age, 5);
BindingEngine.SetPropertyBinding(viewModel, "Age", viewModel2, "Age");
Assert.AreEqual(viewModel.Age, 4);
BindingEngine.SetPropertyBinding(viewModel, "Age", viewModel22, "Age");
Assert.AreEqual(viewModel.Age, 5);
}
public void Test_BindingEngine_ClearBinding_Object()
{
var viewModel = new TestViewModel();
var viewModel2 = new TestViewModel2();
BindingEngine.SetPropertyBinding(viewModel2, "Name", viewModel, "Name")
.SetMode(BindMode.TwoWay);
viewModel.Name = Name1;
Assert.AreEqual(viewModel2.Name, Name1);
BindingEngine.SetPropertyBinding(viewModel2, "Age", viewModel, "Age")
.SetMode(BindMode.TwoWay);
BindingEngine.ClearBinding(new TestViewModel());
viewModel.Age = 2;
Assert.AreEqual(viewModel2.Age, 2);
BindingEngine.ClearBinding(viewModel2);
viewModel.Name = Name2;
Assert.AreNotEqual(viewModel2.Name, Name2);
viewModel.Age = 3;
Assert.AreNotEqual(viewModel2.Age, 3);
}
public void Test_BindingEngine_CollectionBinding_Expression()
{
var viewModel = new TestViewModel();
var view = new TestView();
BindingEngine.SetCollectionBinding(view, o => o.TestViewModelCollections, viewModel,
i => i.TestViewModelCollection)
.Initialize <WeakCollectionBinding>();
view.TestViewModelCollections = new List <TestViewModel2>();
var collections = new ObservableCollection <TestViewModel2>();
viewModel.TestViewModelCollection = collections;
var viewModel2 = new TestViewModel2();
collections.Add(viewModel2);
collections.Add(new TestViewModel2());
Assert.AreEqual(2, view.TestViewModelCollections.Count);
Assert.AreEqual(viewModel2, view.TestViewModelCollections[0]);
collections.RemoveAt(0);
Assert.AreEqual(1, view.TestViewModelCollections.Count);
collections.Clear();
Assert.AreEqual(0, view.TestViewModelCollections.Count);
}
public TestPage2()
{
BindingContext = new TestViewModel2();
Content = new StackLayout
{
Children =
{
new Label {
Text = "Hello ContentPage"
}
}
};
}
public void Test_WeakPropertyBinding_Index_Indexer()
{
var view = new TestViewModel();
var viewModel = new TestViewModel();
// 1. OneWay binding.
new WeakPropertyBinding(view, "TestViewModel2.TestViewModel3.TestViewModels[0]", viewModel, "TestViewModel2.TestViewModel3.TestViewModels[1]")
.Initialize <WeakPropertyBinding>().OfType <WeakPropertyBinding>()
.SetMode(BindMode.OneWay)
.AttachTargetEvent("TestViewEvent");
var viewModel2 = new TestViewModel2();
viewModel.TestViewModel2 = viewModel2;
var viewModel3 = new TestViewModel3();
viewModel2.TestViewModel3 = viewModel3;
var testViewModels = new ObservableCollection <TestViewModel4>();
viewModel3.TestViewModels = testViewModels;
var t4 = new TestViewModel4();
var t41 = new TestViewModel4();
testViewModels.Add(t4);
t41.Name = Name1;
viewModel2 = new TestViewModel2();
view.TestViewModel2 = viewModel2;
viewModel3 = new TestViewModel3();
viewModel2.TestViewModel3 = viewModel3;
testViewModels = new ObservableCollection <TestViewModel4>();
viewModel3.TestViewModels = testViewModels;
t41 = new TestViewModel4();
testViewModels.Add(new TestViewModel4());
Assert.AreEqual(1, view.TestViewModel2.TestViewModel3.TestViewModels.Count);
viewModel.TestViewModel2.TestViewModel3.TestViewModels.Add(t41);
Assert.AreEqual(1, view.TestViewModel2.TestViewModel3.TestViewModels.Count);
Assert.AreEqual(view.TestViewModel2.TestViewModel3.TestViewModels[0], t41);
}
public void Test_BindingEngine_ClearAllBinding()
{
var viewModel = new TestViewModel();
var view = new TestViewModel2();
BindingEngine.SetPropertyBinding(view, "Name", viewModel, "Name")
.SetMode(BindMode.TwoWay);
viewModel.Name = Name1;
Assert.AreEqual(view.Name, Name1);
BindingEngine.ClearAllBindings();
viewModel.Name = Name2;
Assert.AreNotEqual(view.Name, Name2);
}
public void Test_WeakPropertyBinding_Index_Observable()
{
var view = new TestView();
var viewModel = new TestViewModel();
// 1. OneWay binding.
new WeakPropertyBinding(view, "Text1", viewModel, "TestViewModel2.TestViewModel3.TestViewModels[1].Name")
.Initialize <WeakPropertyBinding>().OfType <WeakPropertyBinding>()
.SetMode(BindMode.TwoWay)
.AttachTargetEvent("TestViewEvent");
var viewModel2 = new TestViewModel2();
viewModel.TestViewModel2 = viewModel2;
var viewModel3 = new TestViewModel3();
viewModel2.TestViewModel3 = viewModel3;
var testViewModels = new ObservableCollection <TestViewModel4>();
viewModel3.TestViewModels = testViewModels;
var t4 = new TestViewModel4();
var t41 = new TestViewModel4();
testViewModels.Add(t4);
testViewModels.Add(t41);
t41.Name = Name1;
Assert.AreEqual(Name1, view.Text1);
view.Text1 = Name2;
view.RaiseTestViewEvent();
Assert.AreEqual(Name2, t41.Name);
var t42 = new TestViewModel4();
testViewModels[1] = t42;
Assert.AreEqual(null, view.Text1);
}
public void Test_BindSource_IndexPropertyInt2()
{
var viewModel = new TestViewModel();
var bindSource = new BindContext(viewModel, "TestViewModel2.TestViewModel3.TestViewModels[1].Name");
var viewModel2 = new TestViewModel2();
viewModel.TestViewModel2 = viewModel2;
var viewModel3 = new TestViewModel3();
viewModel2.TestViewModel3 = viewModel3;
Assert.AreEqual(null, bindSource.Value);
Assert.AreEqual(null, bindSource.Source);
var testViewModels = new ObservableCollection <TestViewModel4>();
viewModel3.TestViewModels = testViewModels;
Assert.AreEqual(null, bindSource.Source);
Assert.AreEqual(null, bindSource.Value);
var t4 = new TestViewModel4();
var t41 = new TestViewModel4();
testViewModels.Add(t4);
testViewModels.Add(t41);
Assert.AreEqual(t41, bindSource.Source);
Assert.AreEqual(null, bindSource.Value);
t41.Name = Name;
Assert.AreEqual(Name, bindSource.Value);
testViewModels.RemoveAt(1);
Assert.AreEqual(null, bindSource.Source);
Assert.AreEqual(null, bindSource.Value);
}
public void Test_WeakPropertyBinding_Index_Expression_String()
{
var view = new TestView();
var viewModel = new TestViewModel();
// 1. OneWay binding.
BindingEngine.SetPropertyBinding(view, v => v.Text1, viewModel, vm => vm.TestViewModel2.TestViewModel3.TestViewModel4s["12"].Name)
.Initialize <WeakPropertyBinding>().OfType <WeakPropertyBinding>()
.SetMode(BindMode.TwoWay)
.AttachTargetEvent("TestViewEvent");
var viewModel2 = new TestViewModel2();
viewModel.TestViewModel2 = viewModel2;
var viewModel3 = new TestViewModel3();
viewModel2.TestViewModel3 = viewModel3;
var testViewModels = new ObservableDictionary <string, TestViewModel4>();
viewModel3.TestViewModel4s = testViewModels;
var t4 = new TestViewModel4();
testViewModels.Add("12", t4);
t4.Name = Name1;
Assert.AreEqual(Name1, view.Text1);
view.Text1 = Name2;
view.RaiseTestViewEvent();
Assert.AreEqual(Name2, t4.Name);
var t42 = new TestViewModel4();
testViewModels["12"] = t42;
Assert.AreEqual(null, view.Text1);
}
public void Test_MemoryLeak_WeakPropertyBinding_Getter_Setter()
{
var viewModel = new TestViewModel();
var viewModel2 = new TestViewModel2();
var viewModel1 = new TestViewModel();
var viewModel21 = new TestViewModel2();
var reference = new WeakReference(viewModel1);
var reference2 = new WeakReference(viewModel21);
WeakBinding binding = new WeakPropertyBinding(viewModel2, null, viewModel, null)
.Initialize <WeakPropertyBinding>()
.SetMode <WeakPropertyBinding>(BindMode.TwoWay)
.SetTargetPropertyGetter(arg => viewModel1.Name)
.SetSourcePropertyGetter(arg => viewModel21.Name)
.SetTargetPropertySetter((data, value) => viewModel1.Name = value.ToStringWithoutException())
.SetSourcePropertySetter((data, value) => viewModel21.Name = value.ToStringWithoutException())
.AttachTargetEvent("TestViewModelEvent")
.AttachSourceEvent("TestViewModelEvent");
viewModel21.Name = Name1;
viewModel.RaiseTestViewModelEvent();
Assert.AreEqual(viewModel1.Name, Name1);
viewModel1.Name = Name2;
viewModel2.RaiseTestViewModelEvent();
Assert.AreEqual(viewModel21.Name, Name2);
viewModel1 = null;
GC.Collect();
Assert.IsFalse(reference.IsAlive);
viewModel21 = null;
GC.Collect();
Assert.IsFalse(reference2.IsAlive);
GC.KeepAlive(binding);
}
public void Test_WeakBinding_DoConventions()
{
var viewModel = new TestViewModel();
var viewModel2 = new TestViewModel2();
var binding = new WeakPropertyBinding(viewModel2, "Name", viewModel, "Name")
.Initialize <WeakPropertyBinding>();
binding.DeActivate();
Assert.IsFalse(binding.IsActivate);
binding.Activate();
viewModel.Name = Name1;
binding.DeActivate();
viewModel.Name = Name2;
Assert.AreNotEqual(viewModel2.Name, Name2);
binding.Activate();
Assert.AreEqual(viewModel2.Name, Name2);
}
