public void DoesNotShowErrorWhenUnvalidated()
{
var viewModel = new ValidatableTestObject();
var testValidator = PropertyValidator.For(viewModel, x => x.SomeStringProperty)
.Required("Please enter some text");
var validationMessage = new ValidationMessage();
validationMessage.Validator = testValidator;
Assert.IsFalse(validationMessage.ShowError);
}
public void ShowsErrorWhenValidationResultIsInvalid()
{
var viewModel = new ValidatableTestObject();
var testValidator = PropertyValidator.For(viewModel, x => x.SomeStringProperty)
.Required("Please enter some text");
var validationMessage = new ValidationMessage();
validationMessage.Validator = testValidator;
viewModel.SomeStringProperty = "valid";
viewModel.SomeStringProperty = "";
Assert.AreEqual(ValidationStatus.Invalid, testValidator.ValidationResult.Status);
Assert.IsTrue(validationMessage.ShowError);
}
public void EndToEndTestShowsErrorMessageWhenReactiveValidatorIsNotValid()
{
var textBox = new TextBox();
var viewModel = new ValidatableTestObject();
var testValidator = PropertyValidator.For(viewModel, x => x.SomeStringProperty)
.Required("Please enter some text");
var validationMessage = new ValidationMessage();
BindControlToViewModel(viewModel, nameof(viewModel.SomeStringProperty), textBox, TextBox.TextProperty);
validationMessage.Validator = testValidator;
Assert.IsFalse(validationMessage.ShowError);
textBox.Text = "x";
Assert.AreEqual("x", viewModel.SomeStringProperty);
textBox.Text = "";
Assert.AreEqual("", viewModel.SomeStringProperty);
Assert.IsFalse(testValidator.ValidationResult.IsValid);
Assert.IsTrue(validationMessage.ShowError);
}