public void Should_Not_Try_To_Set_Value_On_Broken_Chain()
{
var data = new Class1 { Foo = new Class2 { Bar = "bar" } };
var target = new ExpressionObserver(data, "Foo.Bar");
// Ensure the ExpressionObserver's subscriptions are kept active.
target.OfType<string>().Subscribe(x => { });
data.Foo = null;
Assert.False(target.SetValue("foo"));
}
public void Exception_Validation_Sends_DataValidationError()
{
var data = new ExceptionTest { MustBePositive = 5 };
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), true);
var validationMessageFound = false;
observer.OfType<BindingNotification>()
.Where(x => x.ErrorType == BindingErrorType.DataValidationError)
.Subscribe(_ => validationMessageFound = true);
observer.SetValue(-5);
Assert.True(validationMessageFound);
}
public void Exception_Validation_Sends_DataValidationError()
{
var data = new ExceptionTest {
MustBePositive = 5
};
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), true);
var validationMessageFound = false;
observer.OfType <BindingNotification>()
.Where(x => x.ErrorType == BindingErrorType.DataValidationError)
.Subscribe(_ => validationMessageFound = true);
observer.SetValue(-5);
Assert.True(validationMessageFound);
}
public void Should_Not_Try_To_Set_Value_On_Broken_Chain()
{
var data = new Class1 {
Foo = new Class2 {
Bar = "bar"
}
};
var target = new ExpressionObserver(data, "Foo.Bar");
// Ensure the ExpressionObserver's subscriptions are kept active.
target.OfType <string>().Subscribe(x => { });
data.Foo = null;
Assert.False(target.SetValue("foo"));
}
public void Doesnt_Send_DataValidationError_When_DataValidatation_Not_Enabled()
{
var data = new ExceptionTest {
MustBePositive = 5
};
var observer = new ExpressionObserver(data, nameof(data.MustBePositive), false);
var validationMessageFound = false;
observer.OfType <BindingNotification>()
.Where(x => x.ErrorType == BindingErrorType.DataValidationError)
.Subscribe(_ => validationMessageFound = true);
observer.SetValue(-5);
Assert.False(validationMessageFound);
GC.KeepAlive(data);
}