java使用jUnit,jMockit,dbunit做DAO层单元测试方法

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第一步：准备数据

先在MySQL数据库中填写测试数据和期望数据，然后导出到xml文件中。

全表导出：DBUnitHelper.exportTable("t_dp_content_02001", TEST_DATA_FILE);

条件查询导出：DBUnitHelper.exportQueryTable("t_dp_content_02001","select * from t_dp_content_02001 where id=123020011", TEST_DATA_FILE);

xml文件路径举例：private static final String TEST_DATA_FILE = "src/test/resources/testdata/t_dp_content_02001.xml";

第二步：单元测试前清理数据

在执行单元测试前，需要准备测试数据，清理库表：

调用DBUnitHelper.doCleanInsert(xml文件路径)方法将测试数据导入到数据库中，该方法不会删除测试数据以外的其它数据；

调用DBUnitHelper.deleteData(xml文件路径)方法，将测试过程中产生的新数据也删除；

也可以调用DBUnitHelper.doCleanTable(库表名)来清空库表。

代码举例：

@BeforeClasspublic static void setUp() throws Exception {     Mockit.setUpMocks();     try {          // 删除并重新插入测试数据          DBUnitHelper.doCleanInsert(TEST_DATA_FILE);          // 删除测试过程中产生的新数据          DBUnitHelper.deleteData(EXPECT_DATA_FILE_1);      } catch (Throwable e) {          e.printStackTrace();      }}

第三步：编写单元测试用例

调用DAO层的方法，然后调用BaseDaoTest.assertEquals(期望数据文件，SQL语句，库表名，忽略比较的字段)方法判断数据库的数据变化是否符合预期。

判断方法举例：

super.assertEquals(EXPECT_DATA_FILE_1,"select * from t_dp_content_02001 where id=3210200110", "t_dp_content_02001",new String[] {"logicKey", "lastUpdateTime"});

单元测试环境 pom.xml文件

<dependency>      <groupId>com.panguso</groupId>      <artifactId>pg-app-core</artifactId>      <version>2.0.0-SNAPSHOT</version></dependency><!-- 单元测试依赖jar包 --><dependency>     <groupId>junit</groupId>    <artifactId>junit</artifactId>    <version>4.10</version>    <scope>test</scope></dependency><dependency>    <groupId>commons-dbcp</groupId>    <artifactId>commons-dbcp</artifactId>    <version>1.4</version>    <scope>test</scope></dependency><dependency>    <groupId>org.dbunit</groupId>    <artifactId>dbunit</artifactId>    <version>2.4.8</version>    <scope>test</scope></dependency>

dbunit.properties配置文件（src/test/resources目录下）

######################################################drivers=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://10.10.160.157:3306/opendata_unit?useUnicode=true&amp;characterEncoding=utf8jdbc.maxconn=5jdbc.user=opendata_unitjdbc.password=opendata_unit_123schema=opendata_unit######################################################sqlMapFilePath=sqlMapConfig_unit.xml

代码：

BaseContentDaoTest .java

package com.panguso.op.resource.core.dao;import junit.framework.Assert;import mockit.Expectations;import mockit.Mocked;import mockit.Mockit;import org.junit.BeforeClass;import org.junit.Test;import com.panguso.app.core.test.BaseDaoTest;import com.panguso.app.core.test.DBUnitHelper;import com.panguso.app.core.util.RandomUtil;import com.panguso.op.resource.core.dao.impl.PlainSequenceGenerator;import com.panguso.op.resource.core.po.Content;/** *  * @author yangjianfei * @date 2012-11-22 */public class BaseContentDaoTest extends BaseDaoTest {    private static BaseContentDao contentDao;    private static final String TEST_DATA_FILE = "src/test/resources/testdata/t_dp_content_02001.xml";    private static final String EXPECT_DATA_FILE_1 = "src/test/resources/testdata/expectation/t_dp_content_02001_1.xml";    private static final Long ID = 3210200110L;    @BeforeClass    public static void setUp() throws Exception {        Mockit.setUpMocks();        try {            ISequenceGenerator generator = new PlainSequenceGenerator(sqlMap);            contentDao = new BaseContentDao(sqlMap, generator);            DBUnitHelper.doCleanInsert(TEST_DATA_FILE);            DBUnitHelper.deleteData(EXPECT_DATA_FILE_1);        } catch (Throwable e) {            e.printStackTrace();        }    }    @Mocked    PlainSequenceGenerator sequenceGenerator;    @Test    public void testCRUD() {        new Expectations() {            {                sequenceGenerator.getNextSequence(anyString);                result = ID;                times = 1;            }        };        Content content = contentDao.getBaseInfoById(123020011L);        content.setId(null);        content.setLogicKey(RandomUtil.generateLetterStr(10));        // 插入数据        contentDao.saveBaseInfo(content);        Content content1 = contentDao.getBaseInfoById(ID);        Assert.assertEquals(content.getContentState(), content1.getContentState());        super.assertEquals(EXPECT_DATA_FILE_1,                "select * from t_dp_content_02001 where id=3210200110", "t_dp_content_02001",                new String[] {"logicKey", "lastUpdateTime"});    }    public static void main(String[] args) throws Exception {//      DBUnitHelper.exportTable("t_dp_content_02001", TEST_DATA_FILE);        DBUnitHelper.exportQueryTable("t_dp_content_02001",                "select * from t_dp_content_02001 where id=123020011", TEST_DATA_FILE);//      DBUnitHelper.doCleanInsert(TEST_DATA_FILE);//      DBUnitHelper.deleteData(TEST_DATA_FILE);//      DBUnitHelper.doInsert(TEST_DATA_FILE);    }}

sqlMapConfig.xml文件：

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE sqlMapConfig            PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"            "http://ibatis.apache.org/dtd/sql-map-config-2.dtd"><sqlMapConfig>    <settings cacheModelsEnabled="true" enhancementEnabled="true"        lazyLoadingEnabled="true" errorTracingEnabled="false" maxRequests="32"        maxSessions="10" maxTransactions="5" useStatementNamespaces="true" />    <transactionManager type="JDBC" commitRequired="false">        <dataSource type="dbcp">            <property name="JDBC.Driver" value="com.mysql.jdbc.Driver" />            <property name="JDBC.ConnectionURL" value="jdbc:mysql://10.10.160.157:3306/opendata_unit?useUnicode=true&amp;characterEncoding=utf8" />            <property name="JDBC.Username" value="opendata_unit" />            <property name="JDBC.Password" value="opendata_unit_123" />            <property name="Pool.MaximumActiveConnections" value="2" />            <property name="Pool.MaximumIdleConnections" value="1" />            <property name="Pool.MaximumCheckoutTime" value="120000" />            <property name="Pool.TimeToWait" value="500" />            <property name="Pool.PingQuery" value="select 1 from t_userinfo" />            <property name="Pool.PingEnabled" value="false" />            <property name="Pool.PingConnectionsOlderThan" value="1" />            <property name="Pool.PingConnectionsNotUsedFor" value="1" />        </dataSource>    </transactionManager>    <sqlMap resource="com/panguso/op/resource/core/dao/sql/ResourceSQL.xml" />    <sqlMap resource="com/panguso/op/resource/core/dao/sql/ContentSQL.xml" />    <sqlMap resource="com/panguso/op/resource/core/dao/sql/SequenceSQL.xml" />    <sqlMap resource="com/panguso/op/resource/core/dao/sql/MetaDataSQL.xml" />    <sqlMap resource="com/panguso/op/resource/core/dao/sql/DataPartnerSQL.xml" />    <sqlMap resource="com/panguso/op/resource/core/dao/sql/ResourceContentListenerSQL.xml" /></sqlMapConfig>

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