public void AfterConstruction_IsNotExecuting()
{
var command = new CustomAsyncCommand(_ => Task.FromResult(0), _ => true);
Assert.False(command.IsExecuting);
Assert.Null(command.Execution);
}
public void AfterSynchronousExecutionComplete_IsNotExecuting()
{
var command = new CustomAsyncCommand(_ => Task.FromResult(0), _ => true);
((ICommand)command).Execute(null);
Assert.False(command.IsExecuting);
Assert.NotNull(command.Execution);
}
public void StartExecution_IsExecuting()
{
var signal = new TaskCompletionSource <object>();
var command = new CustomAsyncCommand(_ => signal.Task, _ => true);
((ICommand)command).Execute(null);
Assert.True(command.IsExecuting);
Assert.NotNull(command.Execution);
signal.SetResult(null);
}
public void StartExecution_NotifiesPropertyChanges()
{
var signal = new TaskCompletionSource <object>();
var command = new CustomAsyncCommand(_ => signal.Task, _ => true);
var isExecutingNotification = TestUtils.PropertyNotified(command, n => n.IsExecuting);
var executionNotification = TestUtils.PropertyNotified(command, n => n.Execution);
((ICommand)command).Execute(null);
Assert.True(isExecutingNotification());
Assert.True(executionNotification());
signal.SetResult(null);
}
public void Execute_DelaysExecutionUntilCommandIsInExecutingState()
{
bool isExecuting = false;
NotifyTask execution = null;
CustomAsyncCommand command = null;
command = new CustomAsyncCommand(() =>
{
isExecuting = command.IsExecuting;
execution = command.Execution;
return(Task.FromResult(0));
}, () => true);
((ICommand)command).Execute(null);
Assert.True(isExecuting);
Assert.NotNull(execution);
}
