public void OnPropertyValidatingReturnsFalseIfModelIsAlreadyInvalid() {
// Arrange
ModelBindingContext bindingContext = new ModelBindingContext() {
ModelName = "theModel"
};
bindingContext.ModelState.AddModelError("themodel.readwriteproperty.stuff", "An error.");
PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(MyModel))["ReadWriteProperty"];
DefaultModelBinderHelper helper = new DefaultModelBinderHelper();
// Act
bool returned = helper.PublicOnPropertyValidating(null, bindingContext, property, null);
// Assert
Assert.IsFalse(returned, "Value should not have passed validation.");
Assert.IsFalse(bindingContext.ModelState.ContainsKey("theModel.ReadWriteProperty"), "Shouldn't have modified ModelState if already contained errors.");
}
public void OnPropertyValidatingReturnsTrueOnSuccess() {
// Arrange
ModelBindingContext bindingContext = new ModelBindingContext() {
ModelName = "theModel"
};
PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(MyModel))["ReadWriteProperty"];
DefaultModelBinderHelper helper = new DefaultModelBinderHelper();
// Act
bool returned = helper.PublicOnPropertyValidating(null, bindingContext, property, 42);
// Assert
Assert.IsTrue(returned, "Value should have passed validation.");
Assert.AreEqual(0, bindingContext.ModelState.Count);
}
public void OnPropertyValidatingReturnsFalseAndCreatesValueRequiredErrorIfNecessary() {
// Arrange
ModelBindingContext bindingContext = new ModelBindingContext() {
ModelName = "theModel"
};
PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(MyModel))["ReadWriteProperty"];
DefaultModelBinderHelper helper = new DefaultModelBinderHelper();
// Act
bool returned = helper.PublicOnPropertyValidating(null, bindingContext, property, null);
// Assert
Assert.IsFalse(returned, "Value should not have passed validation.");
Assert.AreEqual("A value is required.", bindingContext.ModelState["theModel.ReadWriteProperty"].Errors[0].ErrorMessage);
}
