RdbmsRetryOperationsInterceptorTest.java

/*
 * Copyright 2013-2014 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.cloud.aws.jdbc.retry;

import org.aopalliance.intercept.MethodInvocation;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.springframework.aop.ProxyMethodInvocation;
import org.springframework.retry.RetryContext;
import org.springframework.retry.RetryException;
import org.springframework.retry.support.RetrySynchronizationManager;
import org.springframework.transaction.support.TransactionSynchronizationManager;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

/**
 * Unit test class for {@link RdbmsRetryOperationsInterceptor}
 *
 * @author Agim Emruli
 */
public class RdbmsRetryOperationsInterceptorTest {

    @Rule
    public final ExpectedException expectedException = ExpectedException.none();

    @Test
    public void testRetryContextIsAvailable() throws Throwable {
        RetryContext retryContext = mock(RetryContext.class);
        RetrySynchronizationManager.register(retryContext);

        MethodInvocation methodInvocation = mock(MethodInvocation.class);

        try {
            RdbmsRetryOperationsInterceptor interceptor = new RdbmsRetryOperationsInterceptor();
            interceptor.invoke(methodInvocation);
        } finally {
            RetrySynchronizationManager.clear();
        }

        verify(methodInvocation, times(1)).proceed();
    }

    @Test
    public void testRetryContextIsNotAvailable() throws Throwable {

        ProxyMethodInvocation methodInvocation = mock(ProxyMethodInvocation.class);

        when(methodInvocation.invocableClone()).thenReturn(methodInvocation);
        when(methodInvocation.proceed()).then(new Answer<Object>() {

            @Override
            public Object answer(InvocationOnMock invocation) throws Throwable {
                Assert.assertNotNull(RetrySynchronizationManager.getContext());
                return "foo";
            }
        });


        RdbmsRetryOperationsInterceptor interceptor = new RdbmsRetryOperationsInterceptor();
        interceptor.setLabel("mylabel"); //Avoids NPE in RetryOperationsInterceptor.invoke
        interceptor.invoke(methodInvocation);

        verify(methodInvocation, times(1)).invocableClone();
    }

    @Test
    public void testRetryContextWithoutTransaction() throws Throwable {
        this.expectedException.expect(RetryException.class);
        this.expectedException.expectMessage("An active transaction was found");

        TransactionSynchronizationManager.setActualTransactionActive(true);
        try {
            RdbmsRetryOperationsInterceptor operationsInterceptor = new RdbmsRetryOperationsInterceptor();
            MethodInvocation methodInvocation = mock(MethodInvocation.class);
            operationsInterceptor.invoke(methodInvocation);
        } finally {
            TransactionSynchronizationManager.setActualTransactionActive(false);
        }
    }
}