EmailValidatorTest.groovy

@RunWith(Theories.class)
class EmailValidatorTest extends AbstractTestCase {
	
	EmailValidator validator
	
	@Before
	void setUp() {
		validator = new EmailValidator()
		def msgService = EasyMock.createMock(MessageService)
		expect(msgService.getMessage("validator.error.email")).andReturn("error message")
		replay(msgService)
		validator.messageService = msgService 
	}
	
	@Theory
	void testValidEmailAddresses(@ParametersSuppliedBy(ValidEmailSupplier) String email) {
		try {
			validator.validate(null, null, email) // Should not throw any exception
		} catch (ValidatorException e) {
			fail(email + " is valid email address but validation failed")
		}
	}	
	
	@Theory
	void testInvalidEmailAddress(@ParametersSuppliedBy(InvalidEmailSupplier) String email) {
		try {
			validator.validate(null, null, email) // Should throw exception
			fail(email + " is invalid email address but validation passed")
		} catch (ValidatorException e) {
			// NO CODE
		}
	}
	
}

InvalidEmailSupplier.groovy

public class InvalidEmailSupplier extends ParameterSupplier {

	
	@Override
	public List<PotentialAssignment> getValueSources(ParameterSignature sig) {
		['plainaddress',
		'#@%^%#$@#$@#.com',
		'あいうえお@example.com', 
		'@example.com',
		'email.example.com',
		'email@example@example.com',
		'.email@example.com',
		'email.@example.com',
		'email@example.com (Joe Smith)',
		'email@example',
		'email@-example.com',
		'email@example..com',
		'Abc..123@example.com'].collect { PotentialAssignment.forValue(it, it)	}
	}
}

ValidEmailSupplier.groovy

public class ValidEmailSupplier extends ParameterSupplier {

	
	@Override
	List<PotentialAssignment> getValueSources(ParameterSignature sig) {
		[	'email@example.com',
			'firstname.lastname@example.com',
			'email@subdomain.example.com',
			'firstname+lastname@example.com',
			'email@123.123.123.123',
			'1234567890@example.com',
			'email@example-one.com',
			'_______@example.com',
			'email@example.name',
			'email@example.museum',
			'email@example.co.jp',
			'Andoitz.Brit@DHL.COM',
			'firstname-lastname@example.com'].collect { PotentialAssignment.forValue(it, it) }
	}
	
	
	
}