public void Validation_Plugins_Send_Correct_Notifications()
{
var data = new IndeiTest();
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), true);
var result = new List<object>();
observer.Subscribe(x => result.Add(x));
observer.SetValue(5);
observer.SetValue(-5);
observer.SetValue("foo");
observer.SetValue(5);
Assert.Equal(new[]
{
new BindingNotification(0),
// Value is notified twice as ErrorsChanged is always called by IndeiTest.
new BindingNotification(5),
new BindingNotification(5),
// Value is first signalled without an error as validation hasn't been updated.
new BindingNotification(-5),
new BindingNotification(new Exception("Must be positive"), BindingErrorType.DataValidationError, -5),
// Exception is thrown by trying to set value to "foo".
new BindingNotification(
new ArgumentException("Object of type 'System.String' cannot be converted to type 'System.Int32'."),
BindingErrorType.DataValidationError),
// Value is set then validation is updated.
new BindingNotification(new Exception("Must be positive"), BindingErrorType.DataValidationError, 5),
new BindingNotification(5),
}, result);
}
public void Validation_Plugins_Send_Correct_Notifications()
{
var data = new IndeiTest();
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), true);
var result = new List <object>();
observer.Subscribe(x => result.Add(x));
observer.SetValue(5);
observer.SetValue(-5);
observer.SetValue("foo");
observer.SetValue(5);
Assert.Equal(new[]
{
new BindingNotification(0),
// Value is notified twice as ErrorsChanged is always called by IndeiTest.
new BindingNotification(5),
new BindingNotification(5),
// Value is first signalled without an error as validation hasn't been updated.
new BindingNotification(-5),
new BindingNotification(new Exception("Must be positive"), BindingErrorType.DataValidationError, -5),
// Exception is thrown by trying to set value to "foo".
new BindingNotification(
new ArgumentException("Object of type 'System.String' cannot be converted to type 'System.Int32'."),
BindingErrorType.DataValidationError),
// Value is set then validation is updated.
new BindingNotification(new Exception("Must be positive"), BindingErrorType.DataValidationError, 5),
new BindingNotification(5),
}, result);
}
public void Indei_Validation_Does_Not_Subscribe_When_DataValidatation_Not_Enabled()
{
var data = new IndeiTest { MustBePositive = 5 };
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), false);
observer.Subscribe(_ => { });
Assert.Equal(0, data.ErrorsChangedSubscriptionCount);
}
public void Disabled_Indei_Validation_Does_Not_Subscribe()
{
var data = new IndeiTest { MustBePositive = 5 };
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), false);
observer.Subscribe(_ => { });
Assert.Equal(0, data.SubscriptionCount);
}
public void Enabled_Indei_Validation_Subscribes()
{
var data = new IndeiTest { MustBePositive = 5 };
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), true);
var sub = observer.Subscribe(_ => { });
Assert.Equal(1, data.ErrorsChangedSubscriptionCount);
sub.Dispose();
Assert.Equal(0, data.ErrorsChangedSubscriptionCount);
}
public void Indei_Validation_Does_Not_Subscribe_When_DataValidatation_Not_Enabled()
{
var data = new IndeiTest {
MustBePositive = 5
};
var observer = ExpressionObserver.Create(data, o => o.MustBePositive, false);
observer.Subscribe(_ => { });
Assert.Equal(0, data.ErrorsChangedSubscriptionCount);
}
public void Disabled_Indei_Validation_Does_Not_Subscribe()
{
var data = new IndeiTest {
MustBePositive = 5
};
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), false);
observer.Subscribe(_ => { });
Assert.Equal(0, data.SubscriptionCount);
}
public void Enabled_Indei_Validation_Subscribes()
{
var data = new IndeiTest {
MustBePositive = 5
};
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), true);
var sub = observer.Subscribe(_ => { });
Assert.Equal(1, data.ErrorsChangedSubscriptionCount);
sub.Dispose();
Assert.Equal(0, data.ErrorsChangedSubscriptionCount);
}
public void Enabled_Indei_Validation_Subscribes()
{
var data = new IndeiTest {
MustBePositive = 5
};
var observer = ExpressionObserver.Create(data, o => o.MustBePositive, true);
var sub = observer.Subscribe(_ => { });
Assert.Equal(1, data.ErrorsChangedSubscriptionCount);
sub.Dispose();
// Forces WeakEvent compact
Dispatcher.UIThread.RunJobs();
Assert.Equal(0, data.ErrorsChangedSubscriptionCount);
}
public void Validation_Plugins_Send_Correct_Notifications()
{
var data = new IndeiTest();
var observer = ExpressionObserver.Create(data, o => o.MustBePositive, true);
var result = new List <object>();
var errmsg = string.Empty;
try { typeof(IndeiTest).GetProperty(nameof(IndeiTest.MustBePositive)).SetValue(data, "foo"); }
catch (Exception e) { errmsg = e.Message; }
observer.Subscribe(x => result.Add(x));
observer.SetValue(5);
observer.SetValue(-5);
observer.SetValue("foo");
observer.SetValue(5);
Assert.Equal(new[]
{
new BindingNotification(0),
// Value is notified twice as ErrorsChanged is always called by IndeiTest.
new BindingNotification(5),
new BindingNotification(5),
// Value is first signalled without an error as validation hasn't been updated.
new BindingNotification(-5),
new BindingNotification(new DataValidationException("Must be positive"), BindingErrorType.DataValidationError, -5),
// Exception is thrown by trying to set value to "foo".
new BindingNotification(
new ArgumentException(errmsg),
BindingErrorType.DataValidationError),
// Value is set then validation is updated.
new BindingNotification(new DataValidationException("Must be positive"), BindingErrorType.DataValidationError, 5),
new BindingNotification(5),
}, result);
GC.KeepAlive(data);
}
public void Sends_Correct_Notifications_With_Property_Chain()
{
var container = new Container();
var inner = new IndeiTest();
var observer = new ExpressionObserver(
container,
$"{nameof(Container.Inner)}.{nameof(IndeiTest.MustBePositive)}",
true);
var result = new List <object>();
observer.Subscribe(x => result.Add(x));
Assert.Equal(new[]
{
new BindingNotification(
new MarkupBindingChainException("Null value", "Inner.MustBePositive", "Inner"),
BindingErrorType.Error,
AvaloniaProperty.UnsetValue),
}, result);
}
public void Sends_Correct_Notifications_With_Property_Chain()
{
var container = new Container();
var inner = new IndeiTest();
var observer = new ExpressionObserver(
container,
$"{nameof(Container.Inner)}.{nameof(IndeiTest.MustBePositive)}",
true);
var result = new List<object>();
observer.Subscribe(x => result.Add(x));
Assert.Equal(new[]
{
new BindingNotification(
new MarkupBindingChainNullException("Inner.MustBePositive", "Inner"),
BindingErrorType.Error,
AvaloniaProperty.UnsetValue),
}, result);
}
