public void TwoWayBindSmokeTest()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
var fixture = new PropertyBinderImplementation();
vm.Property1 = "Foo";
Assert.NotEqual(vm.Property1, view.SomeTextBox.Text);
var disp = fixture.Bind(vm, view, x => x.Property1, x => x.SomeTextBox.Text, (IObservable <Unit>?)null, null);
Assert.Equal(vm.Property1, view.SomeTextBox.Text);
Assert.Equal("Foo", vm.Property1);
view.SomeTextBox.Text = "Bar";
Assert.Equal(vm.Property1, "Bar");
disp.Dispose();
vm.Property1 = "Baz";
Assert.Equal("Baz", vm.Property1);
Assert.NotEqual(vm.Property1, view.SomeTextBox.Text);
}
public void TwoWayBindWithFuncConvertersSmokeTest()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
var fixture = new PropertyBinderImplementation();
vm.JustADecimal = 123.45m;
Assert.NotEqual(vm.JustADecimal.ToString(), view.SomeTextBox.Text);
var disp = fixture.Bind(vm, view, x => x.JustADecimal, x => x.SomeTextBox.Text, (IObservable <Unit>?)null, d => d.ToString(), decimal.Parse);
Assert.Equal(vm.JustADecimal.ToString(), view.SomeTextBox.Text);
Assert.Equal(123.45m, vm.JustADecimal);
view.SomeTextBox.Text = "567.89";
Assert.Equal(567.89m, vm.JustADecimal);
disp?.Dispose();
vm.JustADecimal = 0;
Assert.Equal(0, vm.JustADecimal);
Assert.Equal("567.89", view.SomeTextBox.Text);
}
public void BindWithFuncShouldWorkAsExtensionMethodSmokeTest()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.Bind(vm, x => x.JustADecimal, x => x.SomeTextBox.Text, d => d.ToString(), decimal.Parse);
}
public void ViewModelIndexerToView()
{
PropertyBindViewModel?vm = new();
var view = new PropertyBindView {
ViewModel = vm
};
view.OneWayBind(view.ViewModel, x => x.SomeCollectionOfStrings[0], x => x.SomeTextBox.Text);
Assert.Equal("Foo", view.SomeTextBox.Text);
}
public void BindToNullShouldThrowHelpfulError()
{
var view = new PropertyBindView {
ViewModel = null
};
Assert.Throws <ArgumentNullException>(() =>
view.WhenAnyValue(x => x.FakeControl !.NullHatingString !)
.BindTo(view !.ViewModel !, x => x !.Property1));
}
public void BindingIntoModelObjects()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.OneWayBind(view.ViewModel, x => x !.Model !.AnotherThing, x => x.SomeTextBox.Text);
Assert.Equal("Baz", view.SomeTextBox.Text);
}
public void ViewModelIndexerPropertyToView()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.OneWayBind(view.ViewModel, x => x.SomeCollectionOfStrings[0].Length, x => x.SomeTextBox.Text);
Assert.Equal("3", view.SomeTextBox.Text);
}
public void OneWayBindConverter()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
var fixture = new PropertyBinderImplementation();
fixture.OneWayBind(vm, view, x => x.JustABoolean, x => x.SomeTextBox.IsEnabled, s => s);
Assert.False(view.SomeTextBox.IsEnabled);
}
public void ItemsControlShouldGetADataTemplate()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
Assert.Null(view.FakeItemsControl.ItemTemplate);
view.OneWayBind(vm, x => x.SomeCollectionOfStrings, x => x.FakeItemsControl.ItemsSource);
Assert.NotNull(view.FakeItemsControl.ItemTemplate);
}
public void BindExpectsConverterFuncsToNotBeNull()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
var fixture = new PropertyBinderImplementation();
Func <string?, string?> nullFunc = null !;
Assert.Throws <ArgumentNullException>(() => fixture.Bind(vm, view, x => x.Property1, x => x.SomeTextBox.Text, (IObservable <Unit>?)null, nullFunc, s => s));
Assert.Throws <ArgumentNullException>(() => fixture.Bind(vm, view, x => x.Property1, x => x.SomeTextBox.Text, (IObservable <Unit>?)null, s => s, nullFunc));
}
public void BindToShouldntInitiallySetToNull()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = null
};
view.OneWayBind(vm, x => x !.Model !.AnotherThing, x => x.FakeControl.NullHatingString);
Assert.Equal(string.Empty, view.FakeControl.NullHatingString);
view.ViewModel = vm;
Assert.Equal(vm !.Model !.AnotherThing, view.FakeControl.NullHatingString);
}
public void BindingToItemsControl()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.OneWayBind(view.ViewModel, x => x.SomeCollectionOfStrings, x => x.FakeItemsControl.ItemsSource);
var itemsSourceValue = (IList)view.FakeItemsControl.ItemsSource;
Assert.True(itemsSourceValue.OfType <string>().Count() > 1);
}
public void OneWayBindWithNullStartingValueToNonNullValue()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.OneWayBind(vm, x => x.Property1, x => x.SomeTextBox.Text);
vm.Property1 = "Baz";
Assert.Equal("Baz", view.SomeTextBox.Text);
}
static (IDisposable?, WeakReference) GetWeakReference()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
var weakRef = new WeakReference(vm);
var disp = view.OneWayBind(vm, x => x.Property1, x => x.SomeTextBox.Text);
view.ViewModel = new PropertyBindViewModel();
return(disp, weakRef);
}
public void OneWayBindWithSelectorAndNonNullStartingValueToNullValue()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.OneWayBind(vm, x => x.Model, x => x.SomeTextBox.Text, x => x?.AnotherThing);
vm.Model = null;
Assert.True(string.IsNullOrEmpty(view.SomeTextBox.Text));
}
public void ItemsControlWithDisplayMemberPathSetShouldNotGetADataTemplate()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.FakeItemsControl.DisplayMemberPath = "Bla";
Assert.Null(view.FakeItemsControl.ItemTemplate);
view.OneWayBind(vm, x => x.SomeCollectionOfStrings, x => x.FakeItemsControl.ItemsSource);
Assert.Null(view.FakeItemsControl.ItemTemplate);
}
public void BindToWithNullStartingValueToNonNullValue()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.WhenAnyValue(x => x.ViewModel !.Property1)
.BindTo(view, x => x.SomeTextBox.Text);
vm.Property1 = "Baz";
Assert.Equal("Baz", view.SomeTextBox.Text);
}
public void OneWayBindWithNonNullStartingValueToNullValue()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
vm.Property1 = "Baz";
view.OneWayBind(vm, x => x.Property1, x => x.SomeTextBox.Text);
vm.Property1 = null;
Assert.True(string.IsNullOrEmpty(view.SomeTextBox.Text));
}
public void BindToTypeConversionSmokeTest()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = null
};
view.WhenAnyValue(x => x.ViewModel !.JustADouble)
.BindTo(view, x => x.FakeControl.NullHatingString);
Assert.Equal(string.Empty, view.FakeControl.NullHatingString);
view.ViewModel = vm;
Assert.Equal(vm.JustADouble.ToString(), view.FakeControl.NullHatingString);
}
public void BindToWithNonNullStartingValueToNullValue()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
vm.Property1 = "Baz";
view.WhenAnyValue(x => x.ViewModel !.Property1)
.BindTo(view, x => x.SomeTextBox.Text);
vm.Property1 = null;
Assert.True(string.IsNullOrEmpty(view.SomeTextBox.Text));
}
public void ItemsControlShouldGetADataTemplateInBindTo()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
Assert.Null(view.FakeItemsControl.ItemTemplate);
vm.WhenAnyValue(x => x.SomeCollectionOfStrings)
.BindTo(view, v => v.FakeItemsControl.ItemsSource);
Assert.NotNull(view.FakeItemsControl.ItemTemplate);
view.WhenAnyValue(x => x.FakeItemsControl.SelectedItem)
.BindTo(vm, x => x.Property1);
}
public void ViewModelNullableToViewNullable()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.Bind(view.ViewModel, x => x.NullableDouble, x => x.FakeControl.NullableDouble);
Assert.Equal(null, vm.NullableDouble);
view.FakeControl.NullableDouble = 4.0;
Assert.Equal(4.0, vm.NullableDouble);
view.FakeControl.NullableDouble = null;
Assert.Equal(null, vm.NullableDouble);
view.FakeControl.NullableDouble = 0.0;
Assert.Equal(0.0, vm.NullableDouble);
}
public void TwoWayBindToSelectedItemOfItemsControl()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
view.FakeItemsControl.ItemsSource = new ObservableCollectionExtended <string>(new[] { "aaa", "bbb", "ccc" });
view.Bind(view.ViewModel, x => x.Property1, x => x.FakeItemsControl.SelectedItem);
Assert.Null(view.FakeItemsControl.SelectedItem);
Assert.Null(vm.Property1);
view.FakeItemsControl.SelectedItem = "aaa";
Assert.Equal("aaa", vm.Property1); // fail
vm.Property1 = "bbb";
Assert.Equal("bbb", view.FakeItemsControl.SelectedItem);
}
public void TypeConvertedTwoWayBindSmokeTest()
{
var vm = new PropertyBindViewModel();
var view = new PropertyBindView {
ViewModel = vm
};
var fixture = new PropertyBinderImplementation();
vm.Property2 = 17;
Assert.NotEqual(vm.Property2.ToString(), view.SomeTextBox.Text);
var disp = fixture.Bind(vm, view, x => x.Property2, x => x.SomeTextBox.Text, (IObservable <Unit>?)null, null);
Assert.Equal(vm.Property2.ToString(), view.SomeTextBox.Text);
Assert.Equal(17, vm.Property2);
view.SomeTextBox.Text = "42";
Assert.Equal(42, vm.Property2);
// Bad formatting error
view.SomeTextBox.Text = "--";
Assert.Equal(42, vm.Property2);
disp.Dispose();
vm.Property2 = 0;
Assert.Equal(0, vm.Property2);
Assert.NotEqual("0", view.SomeTextBox.Text);
vm.JustADecimal = 17.2m;
var disp1 = fixture.Bind(vm, view, x => x.JustADecimal, x => x.SomeTextBox.Text, (IObservable <Unit>?)null, null);
Assert.Equal(vm.JustADecimal.ToString(), view.SomeTextBox.Text);
Assert.Equal(17.2m, vm.JustADecimal);
view.SomeTextBox.Text = 42.3m.ToString();
Assert.Equal(42.3m, vm.JustADecimal);
// Bad formatting.
view.SomeTextBox.Text = "--";
Assert.Equal(42.3m, vm.JustADecimal);
disp1.Dispose();
vm.JustADecimal = 0;
Assert.Equal(0, vm.JustADecimal);
Assert.NotEqual("0", view.SomeTextBox.Text);
// Empty test
vm.JustAInt32 = 12;
var disp2 = fixture.Bind(vm, view, x => x.JustAInt32, x => x.SomeTextBox.Text, (IObservable <Unit>?)null, null);
view.SomeTextBox.Text = string.Empty;
Assert.Equal(12, vm.JustAInt32);
view.SomeTextBox.Text = "1.2";
Assert.Equal(12, vm.JustAInt32);
view.SomeTextBox.Text = "13";
Assert.Equal(13, vm.JustAInt32);
}