com.vladmihalcea.HibernateSQLStatementCountTest.java Source code

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Here is the source code for com.vladmihalcea.HibernateSQLStatementCountTest.java

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/*
 * Copyright 2013 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 com.vladmihalcea;

import com.vladmihalcea.hibernate.model.store.Company;
import com.vladmihalcea.hibernate.model.store.Product;
import com.vladmihalcea.hibernate.model.store.WarehouseProductInfo;
import com.vladmihalcea.service.WarehouseProductInfoService;
import com.vladmihalcea.sql.SQLStatementCountValidator;
import com.vladmihalcea.sql.exception.SQLSelectCountMismatchException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.sql.DataSource;
import java.util.List;
import java.util.Map;

import static junit.framework.Assert.*;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:spring/applicationContext-test.xml" })
@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_CLASS)
public class HibernateSQLStatementCountTest {

    private static final Logger LOG = LoggerFactory.getLogger(HibernateSQLStatementCountTest.class);

    @PersistenceContext(unitName = "persistenceUnit")
    private EntityManager entityManager;

    @Autowired
    private TransactionTemplate transactionTemplate;

    @Autowired
    private WarehouseProductInfoService warehouseProductInfoService;

    @Autowired
    private DataSource otherDataSource;

    @Before
    public void beforeTest() {
        CleanDbUtil.cleanStore(transactionTemplate, entityManager);
        SQLStatementCountValidator.reset();
    }

    @Test
    public void test() {

        transactionTemplate.execute(new TransactionCallback<Void>() {
            @Override
            public Void doInTransaction(TransactionStatus transactionStatus) {

                Company company = new Company();
                company.setName("TV Company");
                entityManager.persist(company);

                Product product1 = new Product("tvCode");
                product1.setName("TV");
                product1.setCompany(company);

                WarehouseProductInfo warehouseProductInfo1 = new WarehouseProductInfo();
                warehouseProductInfo1.setQuantity(101);
                product1.addWarehouse(warehouseProductInfo1);

                Product product2 = new Product("cdCode");
                product2.setName("CD");
                product2.setCompany(company);

                WarehouseProductInfo warehouseProductInfo2 = new WarehouseProductInfo();
                warehouseProductInfo2.setQuantity(50);
                product2.addWarehouse(warehouseProductInfo2);

                entityManager.persist(product1);
                entityManager.persist(product2);
                entityManager.flush();

                final JdbcTemplate otherDataSourceJdbcTemplate = new JdbcTemplate(otherDataSource);
                List<Map<String, Object>> versions = otherDataSourceJdbcTemplate
                        .queryForList(" select * from version ");
                assertTrue(versions.isEmpty());
                return null;
            }
        });

        try {
            SQLStatementCountValidator.reset();
            warehouseProductInfoService.findAllWithNPlusOne();
            SQLStatementCountValidator.assertSelectCount(1);
        } catch (SQLSelectCountMismatchException e) {
            assertEquals(3, e.getRecorded());
        }

        SQLStatementCountValidator.reset();
        warehouseProductInfoService.findAllWithFetch();
        SQLStatementCountValidator.assertSelectCount(1);

        SQLStatementCountValidator.reset();
        warehouseProductInfoService.newWarehouseProductInfo();
        SQLStatementCountValidator.assertSelectCount(1);
        SQLStatementCountValidator.assertInsertCount(2);
    }
}