public void CanValidateModelTest()
{
// Arrange
var tag = TestFramework.TestTag.Create();
// Inducing an error in Tag
tag.TagName = null;
var viewModel = new EditViewModel(tag);
var nameOfTagName = GeneralUtility.NameOf(() => viewModel.TagName);
ICollection <ValidationResult> validationResults;
// Act
DataAnnotationsValidator.TryValidate(viewModel, out validationResults);
// Assert
Assert.That(validationResults.Count, Is.EqualTo(1), "Expecting certain number of errors");
TestFramework.AssertFieldRequired(validationResults, nameOfTagName);
// Act
// Set string fields to string longer than their max lengths
viewModel.TagName = TestFramework.MakeTestNameLongerThan(nameOfTagName, Models.Tag.FieldLengths.TagName);
DataAnnotationsValidator.TryValidate(viewModel, out validationResults);
// Assert
Assert.That(validationResults.Count, Is.AtLeast(1), "Expecting certain number of errors");
TestFramework.AssertFieldStringLength(validationResults, nameOfTagName, Models.Tag.FieldLengths.TagName);
// Act
// Set string fields to string longer than their max lengths
viewModel.TagName = TestFramework.MakeTestName(string.Format("{0}&", nameOfTagName), Models.Tag.FieldLengths.TagName);
DataAnnotationsValidator.TryValidate(viewModel, out validationResults);
// Assert
Assert.That(validationResults.Count, Is.AtLeast(1), "Expecting certain number of errors");
TestFramework.AssertInvalidCharacters(validationResults);
// Act
// Happy path
viewModel.TagName = TestFramework.MakeTestNameWithoutCertainCharacters(nameOfTagName, Models.Tag.FieldLengths.TagName, @"[^a-zA-Z0-9-_\s]");
var isValid = DataAnnotationsValidator.TryValidate(viewModel, out validationResults);
// Assert
Assert.That(isValid, Is.True, "Should pass validation");
}