User Validator
Library to validate username, email and passwords.
Java library to validate typical user fields. Useful for validation when registering new users or logging in.
#Show me the code!!!
First, instance the validator:
UserValidator validator = UserValidator.builder().build();
So, how are you using it?
try {
if (validator.validateUsername(username) &&
validator.validateEmail(email) &&
validator.validatePassword(username, password)) {
// TODO login, register or edit user
}
}
catch (UsernameIsNullException exception) {
// Catch all exceptions you're interested to handle
// TODO show something to the user!!!
}
Exceptions:
@Test (expected = InvalidEmailFormatException.class)
public void shouldThrowInvalidEmailFormatExceptionWhenEmailHasInvalidFormat() throws Exception {
validator.validateEmail("test");
}
@Test (expected = NullEmailException.class)
public void shouldThrowInvalidEmailFormatExceptionWhenEmailIsNull() throws Exception {
validator.validateEmail(null);
}
@Test (expected = InvalidPasswordException.class)
public void shouldThrowInvalidPasswordExceptionWhenInvalidPassword() throws Exception {
validator.validatePassword("username", "username");
}
@Test (expected = InvalidPasswordFormatException.class)
public void shouldThrowInvalidFormatPasswordExceptionWhenPasswordHasInvalidCharacters() throws Exception {
validator.validatePassword("username", "pass word");
}
@Test (expected = InvalidPasswordLengthException.class)
public void shouldThrowInvalidLengthPasswordExceptionPasswordIsTooLong() throws Exception {
validator.validatePassword("username", "passwordWithMoreThanTwentyCharacters");
}
@Test (expected = InvalidPasswordLengthException.class)
public void shouldThrowInvalidLengthPasswordExceptionPasswordIsTooShort() throws Exception {
validator.validatePassword("username", "hi");
}
@Test (expected = NullPasswordException.class)
public void shouldThrowNullPasswordExceptionPasswordIsNull() throws Exception {
validator.validatePassword("username", null);
}
@Test (expected = UsernameIsNullException.class)
public void shouldThrowUsernameIsNullExceptionWhenUsernameIsNull() throws Exception {
validator.validateUsername(null);
}
@Test (expected = InvalidUsernameFormatException.class)
public void shouldThrowUsernameIsNullExceptionWhenUsernameHasInvalidCharacters() throws Exception {
validator.validateUsername("user name");
}
@Test (expected = InvalidUsernameLengthException.class)
public void shouldThrowInvalidUsernameLengthExceptionWhenUsernameIsTooLong() throws Exception {
validator.validateUsername("usernameLongerThan25Characters");
}
@Test (expected = InvalidUsernameLengthException.class)
public void shouldThrowInvalidUsernameLengthExceptionWhenUsernameIsTooShort() throws Exception {
validator.validateUsername("a");
}
#How are your default validations?
private static final String EMAIL_PATTERN = "[a-zA-Z0-9\\+\\._%\\-\\+]{
1,256
}
" +
"@" +
"[a-zA-Z0-9][a-zA-Z0-9\\-]{
0,64
}
" +
"(" +
"\\." +
"[a-zA-Z0-9][a-zA-Z0-9\\-]{
1,25
}
" +
")+"; private static final String USERNAME_PATTERN = "^([-_A-Za-z0-9])*$"; private static final int USERNAME_MINIMUM_LENGTH = 3; private static final int USERNAME_MAXIMUM_LENGTH = 25; private static final int PASSWORD_MINIMUM_LENGTH = 6; private static final int PASSWORD_MAXIMUM_LENGTH = 20; private static final String PASSWORD_PATTERN = "^([A-Za-z0-9_.,&%€@#~])*$"; #Can I customize my validations?
Sure, you can do something like this:
UserValidator.builder()
.emailPattern("here be email pattern")
.passwordMaximumLength(9)
.passwordMinimumLength(0)
.passwordPattern("here be password pattern")
.usernameMaximumLength(9)
.usernameMinimumLength(0)
.usernamePattern("here be username pattern")
.build();
#I want to use it!!!
- Grab via Gradle:
compile 'com.shootr:user-validator:1.0.0'- Grab via Maven:
<dependency>
<groupId>com.shootr</groupId>
<artifactId>user-validator</artifactId>
<version>1.0.0</version>
<type>pom</type> </dependency>#I want to contribute!!!
You are welcome! Please feel free to do Pull Requests or reporting issues.
#Who did this???