public void Get_Binding_For_Property()
{
var subject = new BindingFixtureElement <int, string>(10, "test");
var binding = subject.BindingFor(p => p.Property);
using (var monitoredBinding = binding.Monitor <INotifyPropertyChanged>())
{
subject.Property = "Changed!";
monitoredBinding.Should().RaisePropertyChange(binding, nameof(IReadOnlyObservableValue.Value));
binding.Value.Should().Be("Changed!");
}
}
public void Get_Binding_For_Property_With_FunctionCall()
{
var subject = new BindingFixtureElement <int, int>(10, 25);
var binding = subject.BindingFor(p => (double)CallMe(p.Field));
using (var monitoredBinding = binding.Monitor <INotifyPropertyChanged>())
{
subject.Field = 11;
subject.OnPropertyChanged(nameof(subject.Field));
monitoredBinding.Should().RaisePropertyChange(binding, nameof(IReadOnlyObservableValue.Value));
binding.Value.Should().Be(12.0);
}
}
public void Get_Binding_For_Field_With_Cast()
{
var subject = new BindingFixtureElement <int, string>(10, "test");
var binding = subject.BindingFor(p => (double)p.Field);
using (var monitoredBinding = binding.Monitor <INotifyPropertyChanged>())
{
subject.Field = 11;
subject.OnPropertyChanged(nameof(subject.Field));
monitoredBinding.Should().RaisePropertyChange(binding, nameof(IReadOnlyObservableValue.Value));
binding.Value.Should().Be(11.0);
}
}
public void Create_From_Array()
{
var backend = new BindingFixtureElement <string[], List <string> >();
var binding = backend.BindingFor(e => e.Field).ToListBinding();
using (var monitoredBinding = binding.Monitor <INotifyCollectionChanged>())
{
backend.Field = new[] { "Test" };
backend.OnPropertyChanged(nameof(backend.Field));
monitoredBinding.Should()
.RaiseCollectionChange(binding, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
binding.Should().BeEquivalentTo("Test");
}
}
public void Get_Binding_For_Property_With_MultiParamFunctionCall_Property_Must_Be_First_Argument()
{
// This demonstates that the binding name automation always selects the first member access it
// comes across. I generally do not recommend relying on complex magic here.
var subject = new BindingFixtureElement <int, int>(10, 25);
var binding = subject.BindingFor(p => (double)CallMe(p.Property, p.Field));
using (var monitoredBinding = binding.Monitor <INotifyPropertyChanged>())
{
subject.Field = 11;
subject.OnPropertyChanged(nameof(subject.Field));
// the binding will not react to field changes.
monitoredBinding.Should().NotRaise(nameof(INotifyPropertyChanged.PropertyChanged));
// the binding will react to changes to "property" instead, as this is the first
// member access the parser encountered.
subject.OnPropertyChanged(nameof(subject.Property));
monitoredBinding.Should().RaisePropertyChange(binding, nameof(IReadOnlyObservableValue.Value));
}
}