public void Execute_ShouldCallCallback(
object expected)
{
//arrange
object actual = null;
var value = ReactiveValue.Return(expected, ImmediateScheduler.Instance);
var sut = new ReactiveMvvmCommand <object, object>(o => value, o => actual = o, ImmediateScheduler.Instance);
//act
sut.Execute(null);
//assert
actual.Should().Be(expected);
}
public void Execute_ShouldExecuteObservable()
{
//arrange
bool observableCalled = false;
var value = ReactiveValue.Return(System.Reactive.Unit.Default, ImmediateScheduler.Instance)
.Do(unit => observableCalled = true)
.AsReactiveValue();
var sut = new ReactiveMvvmCommand <object, System.Reactive.Unit>(o => value);
//act
sut.Execute(null);
//assert
observableCalled.Should().BeTrue();
}
public void CanExecute_AfterExecutingCommand_ShouldBePreviousState(
object obj)
{
//arrange
var value = ReactiveValue.Return(obj, ImmediateScheduler.Instance);
var sut = new ReactiveMvvmCommand <object, object>(_ => value, canExecutePredicate: o => false);
sut.Execute(null);
//act
var actual = sut.CanExecute(null);
//assert
actual.Should().BeFalse();
}
public void CanExecute_WhenExecutingCommand_ShouldBeFalse(
object obj)
{
//arrange
var canExecuteValues = new List <bool>();
var value = ReactiveValue.Return(obj, ImmediateScheduler.Instance);
var sut = new ReactiveMvvmCommand <object, object>(_ => value);
sut.CanExecuteChanged += (sender, args) => canExecuteValues.Add(sut.CanExecute(null));
//act
sut.Execute(null);
//assert
canExecuteValues.First().Should().BeFalse();
}
public void Execute_ShouldRaiseCanExecuteChangedTwice(
object obj)
{
//arrange
var value = ReactiveValue.Return(obj, ImmediateScheduler.Instance);
var sut = new ReactiveMvvmCommand <object, object>(_ => value);
sut.MonitorEvents();
//act
sut.Execute(null);
//assert
sut.ShouldRaise("CanExecuteChanged").Should().HaveCount(2);
}
