public void ObservableCanExecuteShouldShowUpInCommand()
{
var input = new[] {true, false, false, true, false, true};
var result = (new TestScheduler()).With(sched => {
var can_execute = new Subject<bool>();
var fixture = new ReactiveCommand(can_execute, null);
var changes_as_observable = new ListObservable<bool>(fixture.CanExecuteObservable);
int change_event_count = 0;
fixture.CanExecuteChanged += (o, e) => { change_event_count++; };
input.Run(x => {
can_execute.OnNext(x);
sched.Run();
Assert.AreEqual(x, fixture.CanExecute(null));
});
// N.B. We check against '5' instead of 6 because we're supposed to
// suppress changes that aren't actually changes i.e. false => false
can_execute.OnCompleted();
sched.Run();
Assert.AreEqual(5, change_event_count);
return changes_as_observable;
});
input.AssertAreEqual(result.ToList());
}
public void ObservableCanExecuteShouldShowUpInCommand()
{
var can_execute = new Subject<bool>();
var fixture = new ReactiveCommand(can_execute, null);
var changes_as_observable = new ListObservable<bool>(fixture.CanExecuteObservable);
var input = new[] { true, false, false, true, false, true };
int change_event_count = 0;
fixture.CanExecuteChanged += (o, e) => { change_event_count++; };
input.Run(x => {
can_execute.OnNext(x);
Assert.AreEqual(x, fixture.CanExecute(null));
});
// N.B. We check against '5' instead of 6 because we're supposed to
// suppress changes that aren't actually changes i.e. false => false
can_execute.OnCompleted();
Assert.AreEqual(5, change_event_count);
input.Zip(changes_as_observable.ToList(), (expected, actual) => new { expected, actual })
.Do(Console.WriteLine)
.Run(x => Assert.AreEqual(x.expected, x.actual));
}
public void CompletelyDefaultReactiveCommandShouldFire()
{
var sched = new TestScheduler();
var fixture = new ReactiveCommand(null, sched);
Assert.IsTrue(fixture.CanExecute(null));
string result = null;
fixture.Subscribe(x => result = x as string);
fixture.Execute("Test");
sched.Run();
Assert.AreEqual("Test", result);
fixture.Execute("Test2");
sched.Run();
Assert.AreEqual("Test2", result);
}
public void ObservableCanExecuteFuncShouldShowUpInCommand()
{
int counter = 1;
var fixture = new ReactiveCommand(_ => (++counter % 2 == 0), null);
var changes_as_observable = new ListObservable<bool>(fixture.CanExecuteObservable);
int change_event_count = 0;
fixture.CanExecuteChanged += (o, e) => { change_event_count++; };
Enumerable.Range(0, 6).Run(x => {
Assert.AreEqual(x % 2 == 0, fixture.CanExecute(null));
});
Assert.AreEqual(6, change_event_count);
}