Exemplo de adição de constraint validation com Bean Validaton

AddingConstraintValidation.java

public class ConstraintValidatorContextImplTest {

	private static String message = "message";

	@Test
	public void testIterableIndexed() {
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();
		context.buildConstraintViolationWithTemplate( message )
				.addPropertyNode( "foo" )
				.addPropertyNode( "bar" ).inIterable().atIndex( 3 )
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertMessageAndPath( messageAndPathList.get( 0 ), message, "foo[3].bar" );
	}

	@Test
	public void testIterableKeyed() {
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();
		context.buildConstraintViolationWithTemplate( message )
				.addPropertyNode( "foo" )
				.addPropertyNode( null ).inIterable().atKey( "test" )
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertMessageAndPath( messageAndPathList.get( 0 ), message, "foo[test]" );
	}

	@Test
	public void testIterableWithKeyFollowedBySimpleNodes() {
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();

		context.buildConstraintViolationWithTemplate( message )
				.addPropertyNode( "foo" )
				.addPropertyNode( "bar" ).inIterable().atKey( "test" )
				.addPropertyNode( "fubar" )
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertMessageAndPath( messageAndPathList.get( 0 ), message, "foo[test].bar.fubar" );
	}

	@Test
	public void testIterableKeyedAndIndexed() {
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();
		context.buildConstraintViolationWithTemplate( message )
				.addPropertyNode( "foo" )
				.addPropertyNode( "bar" ).inIterable().atKey( "test" )
				.addPropertyNode( "fubar" ).inIterable().atIndex( 10 )
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertMessageAndPath( messageAndPathList.get( 0 ), message, "foo[test].bar[10].fubar" );
	}

	@Test
	public void testMultipleInIterable() {
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();
		context.buildConstraintViolationWithTemplate( message )
				.addPropertyNode( "foo" )
				.addPropertyNode( "bar" ).inIterable().atKey( "test" )
				.addPropertyNode( "fubar" ).inIterable()
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertMessageAndPath( messageAndPathList.get( 0 ), message, "foo[test].bar[].fubar" );
	}

	@Test
	public void testMultipleSimpleNodes() {
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();
		context.buildConstraintViolationWithTemplate( message )
				.addPropertyNode( "foo" )
				.addPropertyNode( "bar" )
				.addPropertyNode( "test" )
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertMessageAndPath( messageAndPathList.get( 0 ), message, "foo.bar.test" );
	}

	@Test
	public void testLongPath() {
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();
		context.buildConstraintViolationWithTemplate( message )
				.addPropertyNode( "a" )
				.addPropertyNode( "b" ).inIterable().atKey( "key1" )
				.addPropertyNode( "c" ).inIterable()
				.addPropertyNode( "d" )
				.addPropertyNode( "e" )
				.addPropertyNode( "f" ).inIterable().atKey( "key2" )
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertMessageAndPath( messageAndPathList.get( 0 ), message, "a[key1].b[].c.d.e[key2].f" );
	}

	@Test
	public void testMultipleMessages() {
		String message1 = "message1";
		String message2 = "message2";
		ConstraintValidatorContextImpl context = createEmptyConstraintValidatorContextImpl();
		context.buildConstraintViolationWithTemplate( message1 )
				.addPropertyNode( "foo" )
				.addPropertyNode( "bar" ).inIterable().atKey( "key" )
				.addConstraintViolation();
		context.buildConstraintViolationWithTemplate( message2 )
				.addConstraintViolation();

		List<MessageAndPath> messageAndPathList = context.getMessageAndPathList();
		assertTrue( messageAndPathList.size() == 2 );
		assertMessageAndPath( messageAndPathList.get( 0 ), message1, "foo[key].bar" );
		assertMessageAndPath( messageAndPathList.get( 1 ), message2, "" );
	}

	@Test(expectedExceptions = ValidationException.class)
	public void testUnwrapToImplementationCausesValidationException() {
		ConstraintValidatorContext context = createEmptyConstraintValidatorContextImpl();
		context.unwrap( ConstraintValidatorContextImpl.class );
	}

	@Test
	public void testUnwrapToPublicTypesSucceeds() {
		ConstraintValidatorContext context = createEmptyConstraintValidatorContextImpl();

		ConstraintValidatorContext asConstraintValidatorContext = context.unwrap( ConstraintValidatorContext.class );
		assertSame( asConstraintValidatorContext, context );

		java.lang.Object asObject = context.unwrap( java.lang.Object.class );
		assertSame( asObject, context );
	}

	private ConstraintValidatorContextImpl createEmptyConstraintValidatorContextImpl() {
		PathImpl path = PathImpl.createRootPath();
		path.addBeanNode();

		ConstraintValidatorContextImpl context = new ConstraintValidatorContextImpl(
				null, path, null
		);
		context.disableDefaultConstraintViolation();
		return context;
	}

	private void assertMessageAndPath(MessageAndPath messageAndPath, String expectedMessage, String expectedPath) {
		assertTrue(
				pathsAreEqual( messageAndPath.getPath(), PathImpl.createPathFromString( expectedPath ) ),
				"Path do not match. Actual: '" + messageAndPath.getPath() + "' Expected: '" + expectedPath + "'"
		);
		assertEquals( messageAndPath.getMessage(), expectedMessage, "Wrong message" );
	}
}