DATAREST-216 - Added integration test.

Forgot to commit integration test with 5dd33b.

Related pull request: #126.

spring-data-rest-core/src/test/java/org/springframework/data/rest/core/invoke/CrudRepositoryInvokerIntegrationTests.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright 2014 the original author or authors.
+ *
+ * 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 org.springframework.data.rest.core.invoke;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import org.aopalliance.intercept.MethodInterceptor;
+import org.aopalliance.intercept.MethodInvocation;
+import org.junit.Test;
+import org.springframework.aop.framework.ProxyFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.core.convert.ConversionService;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.support.Repositories;
+import org.springframework.data.rest.core.AbstractIntegrationTests;
+import org.springframework.data.rest.core.domain.jpa.Order;
+import org.springframework.data.rest.core.domain.jpa.OrderRepository;
+import org.springframework.data.rest.core.domain.jpa.Person;
+import org.springframework.data.rest.core.domain.jpa.PersonRepository;
+import org.springframework.format.support.DefaultFormattingConversionService;
+
+/**
+ * Intgration tests for {@link CrudRepositoryInvoker}.
+ * 
+ * @author Oliver Gierke
+ */
+public class CrudRepositoryInvokerIntegrationTests extends AbstractIntegrationTests {
+
+	@Autowired ApplicationContext context;
+	@Autowired PersonRepository personRepository;
+	@Autowired OrderRepository orderRepository;
+
+	/**
+	 * @see DATAREST-216
+	 */
+	@Test
+	public void invokesRedeclaredSave() {
+
+		RepositoryInvoker invoker = getInvokerFor(orderRepository, OrderRepository.class);
+
+		Person person = personRepository.findOne(1L);
+		invoker.invokeSave(new Order(person));
+	}
+
+	/**
+	 * @see DATAREST-216
+	 */
+	@Test
+	public void invokesRedeclaredFindOne() {
+
+		Person person = personRepository.findOne(1L);
+		Order order = orderRepository.save(new Order(person));
+
+		RepositoryInvoker invoker = getInvokerFor(orderRepository, OrderRepository.class);
+		invoker.invokeFindOne(order.getId());
+	}
+
+	/**
+	 * @see DATAREST-216
+	 */
+	@Test
+	public void invokesDeleteOnCrudRepository() {
+
+		Person person = personRepository.findOne(1L);
+		Order order = orderRepository.save(new Order(person));
+
+		RepositoryInvoker invoker = getInvokerFor(orderRepository, CrudRepository.class);
+		invoker.invokeDelete(order.getId());
+	}
+
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	private RepositoryInvoker getInvokerFor(Object repository, Class<?> expectedType) {
+
+		Object proxy = getVerifyingProxy(repository, expectedType);
+		Repositories repositories = new Repositories(context);
+		ConversionService conversionService = new DefaultFormattingConversionService();
+
+		return new CrudRepositoryInvoker((CrudRepository) proxy, repositories.getRepositoryInformationFor(Order.class),
+				conversionService);
+	}
+
+	@SuppressWarnings("unchecked")
+	private static <T> T getVerifyingProxy(T target, Class<?> expectedType) {
+
+		ProxyFactory factory = new ProxyFactory();
+		factory.setInterfaces(target.getClass().getInterfaces());
+		factory.setTarget(target);
+		factory.addAdvice(new VerifyingMethodInterceptor(expectedType));
+
+		return (T) factory.getProxy();
+	}
+
+	/**
+	 * {@link MethodInterceptor} to verifiy the invocation was triggered on the given type.
+	 * 
+	 * @author Oliver Gierke
+	 */
+	@SuppressWarnings("rawtypes")
+	private static final class VerifyingMethodInterceptor implements MethodInterceptor {
+
+		private final Class expectedInvocationTarget;
+
+		public VerifyingMethodInterceptor(Class<?> expectedInvocationTarget) {
+			this.expectedInvocationTarget = expectedInvocationTarget;
+		}
+
+		@Override
+		public Object invoke(MethodInvocation invocation) throws Throwable {
+
+			Class<?> type = invocation.getMethod().getDeclaringClass();
+
+			assertThat("Expected method invocation on " + expectedInvocationTarget + " but was invoked on " + type + "!",
+					type, is(equalTo(expectedInvocationTarget)));
+
+			return invocation.proceed();
+		}
+	}
+}