public void InvalidLambda_Test()
{
//Given
string input = Any.Create<string>();
var vm = new Vm(input);
//When
var ex = Assert.Throws<ArgumentException>(() => vm.ObservableFromProperty<Vm, string>(vm, t => null));
//Then
Assert.That(ex.Message, Is.EqualTo("Lambda must have body"));
}
public void EmptyString_Test()
{
//Given
string result = null;
var vm = new Vm(Any.Create<string>());
vm.ObservableFromProperty(vm,t => t.FirstValue)
.DistinctUntilChanged()
.Where(t => !string.IsNullOrWhiteSpace(t))
.InvokeCommand(new ReactiveCommand<string>(t => result = t, _ => true));
//When
vm.FirstValue = string.Empty;
//Then
Assert.That(result, Is.Null);
}
public void ShouldNotifyViewModel()
{
//Given
Vm vm = new Vm(Any.Create<string>());
int value = Any.Create<int>();
//When
vm.ObserverPropertyValue = Observable.Create<int>(obs =>
{
obs.OnNext(value);
obs.OnCompleted();
return Disposable.Empty;
}).ToProperty(vm, t => t.SecondValue);
//Then
Assert.That(vm.SecondValue, Is.EqualTo(value));
}
public void Basic_Notification()
{
//Given
string result = "";
string input = Any.Create<string>();
var vm = new Vm("");
vm.ObservableFromProperty(vm,t => t.FirstValue)
.DistinctUntilChanged()
.Where(t => !string.IsNullOrWhiteSpace(t))
.Select(t => t.ToUpper())
.InvokeCommand(new ReactiveCommand<string>(t => result = t, _ => true));
//When
vm.FirstValue = input;
//Then
Assert.That(result, Is.EqualTo(input.ToUpper()));
}
public void Dispose_Test()
{
//Given
string result = null;
var vm = new Vm( Any.Create<string>());
IDisposable disp = vm.ObservableFromProperty(vm,t => t.FirstValue)
.DistinctUntilChanged()
.Where(t => !string.IsNullOrWhiteSpace(t))
.InvokeCommand(new ReactiveCommand<string>(t => result = t, _ => true));
//When
string value1 = Any.Create<string>();
string value2 = Any.Create<string>();
vm.FirstValue = value1;
disp.Dispose();
vm.FirstValue = value2;
//Then
Assert.That(result, Is.EqualTo(value1));
}
