public static void ExecuteWithParameter()
{
var invokeCount = 0;
var command = new ManualRelayCommand <int>(o => invokeCount = o, _ => true);
command.Execute(4);
Assert.AreEqual(4, invokeCount);
}
public void ExecuteNoParameter()
{
int invokeCount = 0;
var command = new ManualRelayCommand(_ => invokeCount++, _ => true);
command.Execute(null);
Assert.AreEqual(1, invokeCount);
}
public void ExecuteNotifies()
{
var invokeCount = 0;
var isExecutingCount = 0;
var command = new ManualRelayCommand(() => invokeCount++, () => true);
command.ObservePropertyChangedSlim(nameof(command.IsExecuting), false)
.Subscribe(_ => isExecutingCount++);
Assert.IsFalse(command.IsExecuting);
Assert.True(command.CanExecute());
command.Execute();
Assert.IsFalse(command.IsExecuting);
Assert.True(command.CanExecute());
Assert.AreEqual(1, invokeCount);
Assert.AreEqual(2, isExecutingCount);
}
public static void ExecuteNotifies()
{
var invokeCount = 0;
var isExecutingCount = 0;
var command = new ManualRelayCommand <int>(i => invokeCount += i, _ => true);
using (command.ObservePropertyChangedSlim(nameof(command.IsExecuting), signalInitial: false)
.Subscribe(_ => isExecutingCount++))
{
Assert.IsFalse(command.IsExecuting);
Assert.True(command.CanExecute(1));
command.Execute(1);
Assert.IsFalse(command.IsExecuting);
Assert.True(command.CanExecute(1));
Assert.AreEqual(1, invokeCount);
Assert.AreEqual(2, isExecutingCount);
}
}