/// <summary>
/// Validates that the username contains only the characters permitted by the
/// <see cref="UsernameOptions"/> configuration settings.
/// </summary>
protected virtual ValidationError ValidateAllowedCharacters(IUsernameValidationContext context)
{
var userArea = _userAreaDefinitionRepository.GetRequiredByCode(context.UserAreaCode);
// Bypass format validation for email-based usernames
if (userArea.UseEmailAsUsername)
{
return(null);
}
var options = _userAreaDefinitionRepository.GetOptionsByCode(context.UserAreaCode).Username;
var invalidCharacters = UsernameCharacterValidator.GetInvalidCharacters(context.Username.NormalizedUsername, options);
if (!invalidCharacters.Any())
{
return(null);
}
// Be careful here, because we're handling user input. Any message should be escaped when
// rendered, but to be safe we'll only include a single invalid character
return(UserValidationErrors
.Username
.InvalidCharacters
.Customize()
.WithMessageFormatParameters(invalidCharacters.First().ToString())
.WithProperties(context.PropertyName)
.Create());
}
public void UsingDefaultRules_IrregularEmailsNotAllowed(string email)
{
var options = new UsernameOptions()
{
AllowAnyCharacter = false
};
var result = UsernameCharacterValidator.GetInvalidCharacters(email, options);
result.Should().HaveCountGreaterOrEqualTo(1);
}
public void UsingDefaultRules_AcceptsValidUsernames(string email)
{
var options = new UsernameOptions()
{
AllowAnyCharacter = false
};
var result = UsernameCharacterValidator.GetInvalidCharacters(email, options);
result.Should().BeEmpty();
}
public void AllowAny_AcceptsAnything(string email)
{
var options = new UsernameOptions()
{
AllowAnyCharacter = true
};
var result = UsernameCharacterValidator.GetInvalidCharacters(email, options);
result.Should().BeEmpty();
}
public void WhenAllowsSpecificChars_ReturnInvalid(string email, string expected)
{
var options = new UsernameOptions()
{
AdditionalAllowedCharacters = "dog",
AllowAnyCharacter = false,
AllowAnyLetter = false,
AllowAnyDigit = false
};
var result = UsernameCharacterValidator.GetInvalidCharacters(email, options);
result.Should().BeEquivalentTo(expected);
}
public void WhenAllowsOnlyDigit_ReturnsNonDigits(string email, string expected)
{
var options = new UsernameOptions()
{
AdditionalAllowedCharacters = null,
AllowAnyCharacter = false,
AllowAnyLetter = false,
AllowAnyDigit = true
};
var result = UsernameCharacterValidator.GetInvalidCharacters(email, options);
result.Should().BeEquivalentTo(expected);
}
