SpringMethodValidationTest.java

/**
 *  Copyright 2011 Gunnar Morling (http://www.gunnarmorling.de/)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package de.gmorling.methodvalidation.spring;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

import java.util.ResourceBundle;
import java.util.Set;

import javax.inject.Inject;

import org.hibernate.validator.MethodConstraintViolation;
import org.hibernate.validator.MethodConstraintViolationException;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import de.gmorling.methodvalidation.spring.domain.Movie;
import de.gmorling.methodvalidation.spring.service.MovieRepository;

/**
 * @author Kevin Pollet
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "/service-spring-config.xml")
public class SpringMethodValidationTest {

	private static String nullValidationMessage;

	@Inject
	private MovieRepository movieRepository;

	@BeforeClass
	public static void before() {
		ResourceBundle bundle = ResourceBundle.getBundle( "org.hibernate.validator.ValidationMessages" );
		nullValidationMessage = bundle.getString( "javax.validation.constraints.NotNull.message" );
	}

	@Test
	public void validMethodCall() {

		Set<Movie> moviesByBryanSinger = movieRepository
				.findMoviesByDirector( "Bryan Singer" );

		assertEquals( 1, moviesByBryanSinger.size() );
		assertEquals(
				"The Usual Suspects",
				moviesByBryanSinger.iterator().next().getTitle()
		);
	}

	@Test
	public void methodCallFailsDueToIllegalParameter() {

		try {
			movieRepository.findMoviesByDirector( null );
			fail(
					"Expected "
							+ MethodConstraintViolationException.class.getSimpleName()
							+ " wasn't thrown."
			);
		}
		catch ( MethodConstraintViolationException e ) {
			Set<MethodConstraintViolation<?>> violations = e
					.getConstraintViolations();
			assertEquals( 1, violations.size() );
			MethodConstraintViolation<?> constraintViolation = violations
					.iterator().next();
			assertEquals( nullValidationMessage, constraintViolation.getMessage() );
			assertEquals(
					"MovieRepository#findMoviesByDirector(arg0)",
					constraintViolation.getPropertyPath().toString()
			);
		}

	}

	@Test
	public void methodCallFailsDueToIllegalReturnValue() {

		try {
			movieRepository.findMoviesByDirector( "John Hillcoat" );
			fail(
					"Expected "
							+ MethodConstraintViolationException.class.getSimpleName()
							+ " wasn't thrown."
			);
		}
		catch ( MethodConstraintViolationException e ) {
			Set<MethodConstraintViolation<?>> violations = e
					.getConstraintViolations();
			assertEquals( 1, violations.size() );
			MethodConstraintViolation<?> constraintViolation = violations
					.iterator().next();
			assertEquals( nullValidationMessage, constraintViolation.getMessage() );
			assertEquals(
					"MovieRepository#findMoviesByDirector()[].releaseDate",
					constraintViolation.getPropertyPath().toString()
			);
		}
	}

}