public void IsValidWhenAllValidatorsAreValid()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("Error occurred!");
var anotherValidator = PropertyValidator
.For(validatableObject, o => o.AnotherStringProperty)
.Required("Error occurred!");
var modelValidator = new ModelValidator(validator, anotherValidator);
Assert.IsFalse(modelValidator.IsValid);
validatableObject.SomeStringProperty = "valid";
Assert.IsFalse(modelValidator.IsValid);
validatableObject.AnotherStringProperty = "valid";
Assert.IsTrue(modelValidator.IsValid);
validatableObject.AnotherStringProperty = "";
Assert.IsFalse(modelValidator.IsValid);
}
public void IsValidWhenAllValidatorsAreValid()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("Error occurred!");
var anotherValidator = PropertyValidator
.For(validatableObject, o => o.AnotherStringProperty)
.Required("Error occurred!");
var modelValidator = new ModelValidator(validator, anotherValidator);
Assert.IsFalse(modelValidator.IsValid);
validatableObject.SomeStringProperty = "valid";
Assert.IsFalse(modelValidator.IsValid);
validatableObject.AnotherStringProperty = "valid";
Assert.IsTrue(modelValidator.IsValid);
validatableObject.AnotherStringProperty = "";
Assert.IsFalse(modelValidator.IsValid);
}
public void ValidationResultReturnsUnvalidatedIfNoValidators()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator.For(validatableObject, o => o.SomeStringProperty);
var result = validator.ValidationResult;
Assert.AreEqual(PropertyValidationResult.Unvalidated, result);
}
public void ValidationResultReturnsUnvalidatedIfNoValidators()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator.For(validatableObject, o => o.SomeStringProperty);
var result = validator.ValidationResult;
Assert.AreEqual(PropertyValidationResult.Unvalidated, result);
}
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 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 RequiredIsUnvalidatedAndNotValidIfPropertyNeverChanges()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("Please provide a value for SomeStringProperty!");
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual(PropertyValidationResult.Unvalidated, result);
}
public void RequiredIsUnvalidatedAndNotValidIfPropertyNeverChanges()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("Please provide a value for SomeStringProperty!");
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual(PropertyValidationResult.Unvalidated, result);
}
public void ValidationResultReturnsSuccessIfValidatorsPass()
{
var validatableObject = new ValidatableTestObject();
// Validator validates that the property is equal to the string "Inigo Montoya".
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.ValidIfTrue(value => value == "Inigo Montoya", "Error occurred!");
validatableObject.SomeStringProperty = "Inigo Montoya";
var result = validator.ValidationResult;
Assert.IsTrue(result.IsValid);
}
public void RequiredValidatesPropertyNotEmpty()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("Please provide a value for SomeStringProperty!");
validatableObject.SomeStringProperty = "";
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual("Please provide a value for SomeStringProperty!", result.Message);
}
public void ValidationResultReturnsSuccessIfValidatorsPass()
{
var validatableObject = new ValidatableTestObject();
// Validator validates that the property is equal to the string "Inigo Montoya".
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.ValidIfTrue(value => value == "Inigo Montoya", "Error occurred!");
validatableObject.SomeStringProperty = "Inigo Montoya";
var result = validator.ValidationResult;
Assert.IsTrue(result.IsValid);
}
public void RequiredValidatesPropertyNotEmpty()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("Please provide a value for SomeStringProperty!");
validatableObject.SomeStringProperty = "";
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual("Please provide a value for SomeStringProperty!", result.Message);
}
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 ValidationResultReturnsFailureIfAnyValidatorsFail()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("String may not be null or empty")
.ValidIfTrue(value => value == "Inigo Montoya", "Error occurred!")
.ValidIfTrue(value => value == "My name is not Inigo Montoya", "Doh!");
validatableObject.SomeStringProperty = "My name is not Inigo Montoya";
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual("Error occurred!", result.Message);
}
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 ValidationResultReturnsFailureIfAnyValidatorsFail()
{
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.Required("String may not be null or empty")
.ValidIfTrue(value => value == "Inigo Montoya", "Error occurred!")
.ValidIfTrue(value => value == "My name is not Inigo Montoya", "Doh!");
validatableObject.SomeStringProperty = "My name is not Inigo Montoya";
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual("Error occurred!", result.Message);
}
public void ValidatorsRunInOrderAndStopWhenInvalid()
{
List<int> results = new List<int>();
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.ValidIfTrue(value => { results.Add(0); return true; }, "Error occurred!")
.ValidIfTrue(value => { results.Add(1); return true; }, "Error occurred!")
.ValidIfTrue(value => { results.Add(2); return true; }, "Error occurred!")
.ValidIfTrue(value => { results.Add(3); return false; }, "Error occurred!")
.ValidIfTrue(value => { results.Add(4); return true; }, "Error occurred!");
validatableObject.SomeStringProperty = "My name is not Inigo Montoya";
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual("Error occurred!", result.Message);
Assert.AreEqual(4, results.Count);
for (int i = 0; i < 4; i++) Assert.AreEqual(i, results[i]);
}
public void ValidationResultNotifiesWhenValidationStateChanges()
{
var validatableObject = new ValidatableTestObject();
// Validator validates that the property is equal to the string "Inigo Montoya".
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.ValidIfTrue(value => value == "Inigo Montoya", "Error occurred!");
PropertyValidationResult validationResult = null;
validator.PropertyChanged += (s, e) =>
{
if(e.PropertyName == nameof(validator.ValidationResult))
validationResult = validator.ValidationResult;
};
Assert.IsNull(validationResult); // Precondition
validatableObject.SomeStringProperty = "not empty";
Assert.AreEqual(validationResult, validator.ValidationResult);
Assert.IsFalse(validationResult.IsValid);
}
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);
}
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);
}
public void ValidationResultNotifiesWhenValidationStateChanges()
{
var validatableObject = new ValidatableTestObject();
// Validator validates that the property is equal to the string "Inigo Montoya".
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.ValidIfTrue(value => value == "Inigo Montoya", "Error occurred!");
PropertyValidationResult validationResult = null;
validator.PropertyChanged += (s, e) =>
{
if (e.PropertyName == nameof(validator.ValidationResult))
{
validationResult = validator.ValidationResult;
}
};
Assert.IsNull(validationResult); // Precondition
validatableObject.SomeStringProperty = "not empty";
Assert.AreEqual(validationResult, validator.ValidationResult);
Assert.IsFalse(validationResult.IsValid);
}
public void ValidatorsRunInOrderAndStopWhenInvalid()
{
List <int> results = new List <int>();
var validatableObject = new ValidatableTestObject();
var validator = PropertyValidator
.For(validatableObject, o => o.SomeStringProperty)
.ValidIfTrue(value => { results.Add(0); return(true); }, "Error occurred!")
.ValidIfTrue(value => { results.Add(1); return(true); }, "Error occurred!")
.ValidIfTrue(value => { results.Add(2); return(true); }, "Error occurred!")
.ValidIfTrue(value => { results.Add(3); return(false); }, "Error occurred!")
.ValidIfTrue(value => { results.Add(4); return(true); }, "Error occurred!");
validatableObject.SomeStringProperty = "My name is not Inigo Montoya";
var result = validator.ValidationResult;
Assert.IsFalse(result.IsValid);
Assert.AreEqual("Error occurred!", result.Message);
Assert.AreEqual(4, results.Count);
for (int i = 0; i < 4; i++)
{
Assert.AreEqual(i, results[i]);
}
}