public async Task WhenAnyObservableSmokeTestMerging()
{
var fixture = new TestWhenAnyObsViewModel();
var list = new List <int>();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command2).ObserveOn(ImmediateScheduler.Instance).Subscribe(list.Add);
Assert.Equal(0, list.Count);
await fixture.Command1.Execute(1);
Assert.Equal(1, list.Count);
await fixture.Command2.Execute(2);
Assert.Equal(2, list.Count);
await fixture.Command1.Execute(1);
Assert.Equal(3, list.Count);
Assert.True(
new[] { 1, 2, 1, }.Zip(
list,
(expected, actual) => new
{
expected,
actual
}).All(x => x.expected == x.actual));
}
public void NullObservablesDoNotCauseExceptions()
{
var fixture = new TestWhenAnyObsViewModel();
fixture.Command1 = null;
// these are the overloads of WhenAnyObservable that perform a Merge
fixture.WhenAnyObservable(x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1).Subscribe();
// these are the overloads of WhenAnyObservable that perform a CombineLatest
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, (zero, one) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three, four) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three, four, five) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three, four, five, six) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three, four, five, six, seven) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three, four, five, six, seven, eight) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three, four, five, six, seven, eight, nine) => Unit.Default).Subscribe();
fixture.WhenAnyObservable(x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, x => x.Command1, (zero, one, two, three, four, five, six, seven, eight, nine, ten) => Unit.Default).Subscribe();
}
public async Task WhenAnyObservableSmokeTestCombining()
{
var fixture = new TestWhenAnyObsViewModel();
var list = new List <string>();
fixture.WhenAnyObservable(x => x.Command3, x => x.Command1, (s, i) => s + " : " + i).ObserveOn(ImmediateScheduler.Instance).Subscribe(list.Add);
Assert.Equal(0, list.Count);
await fixture.Command1.Execute(1);
await fixture.Command3.Execute("foo");
Assert.Equal(1, list.Count);
await fixture.Command1.Execute(2);
Assert.Equal(2, list.Count);
await fixture.Command3.Execute("bar");
Assert.Equal(3, list.Count);
Assert.True(
new[] { "foo : 1", "foo : 2", "bar : 2", }.Zip(
list,
(expected, actual) => new
{
expected,
actual
}).All(x => x.expected == x.actual));
}
public void WhenAnyObservableWithNullObjectShouldUpdateWhenObjectIsntNullAnymore()
{
var fixture = new TestWhenAnyObsViewModel();
fixture.WhenAnyObservable(x => x.Changes).Bind(out var output).ObserveOn(ImmediateScheduler.Instance).Subscribe();
Assert.Equal(0, output.Count);
fixture.MyListOfInts = new ObservableCollectionExtended <int>();
Assert.Equal(0, output.Count);
fixture.MyListOfInts.Add(1);
Assert.Equal(1, output.Count);
fixture.MyListOfInts = null;
Assert.Equal(1, output.Count);
}