Junit test case for database insert method with DAO and web service

This is one sample dao test using junit in spring project.

import java.util.List;

import junit.framework.Assert;

import org.jboss.tools.example.springmvc.domain.Member;
import org.jboss.tools.example.springmvc.repo.MemberDao;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.transaction.annotation.Transactional;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:test-context.xml",
"classpath:/META-INF/spring/applicationContext.xml"})
@Transactional
@TransactionConfiguration(defaultRollback=true)
public class MemberDaoTest
{
    @Autowired
    private MemberDao memberDao;

    @Test
    public void testFindById()
    {
        Member member = memberDao.findById(0l);

        Assert.assertEquals("John Smith", member.getName());
        Assert.assertEquals("[email protected]", member.getEmail());
        Assert.assertEquals("2125551212", member.getPhoneNumber());
        return;
    }

    @Test
    public void testFindByEmail()
    {
        Member member = memberDao.findByEmail("[email protected]");

        Assert.assertEquals("John Smith", member.getName());
        Assert.assertEquals("[email protected]", member.getEmail());
        Assert.assertEquals("2125551212", member.getPhoneNumber());
        return;
    }

    @Test
    public void testRegister()
    {
        Member member = new Member();
        member.setEmail("[email protected]");
        member.setName("Jane Doe");
        member.setPhoneNumber("2125552121");

        memberDao.register(member);
        Long id = member.getId();
        Assert.assertNotNull(id);

        Assert.assertEquals(2, memberDao.findAllOrderedByName().size());
        Member newMember = memberDao.findById(id);

        Assert.assertEquals("Jane Doe", newMember.getName());
        Assert.assertEquals("[email protected]", newMember.getEmail());
        Assert.assertEquals("2125552121", newMember.getPhoneNumber());
        return;
    }

    @Test
    public void testFindAllOrderedByName()
    {
        Member member = new Member();
        member.setEmail("[email protected]");
        member.setName("Jane Doe");
        member.setPhoneNumber("2125552121");
        memberDao.register(member);

        List<Member> members = memberDao.findAllOrderedByName();
        Assert.assertEquals(2, members.size());
        Member newMember = members.get(0);

        Assert.assertEquals("Jane Doe", newMember.getName());
        Assert.assertEquals("[email protected]", newMember.getEmail());
        Assert.assertEquals("2125552121", newMember.getPhoneNumber());
        return;
    }
}

The design of your classes will make it hard to test them. Using hardcoded connection strings or instantiating collaborators in your methods with new can be considered as test-antipatterns. Have a look at the DependencyInjection pattern. Frameworks like Spring might be of help here.

To have your DAO tested you need to have control over your database connection in your unit tests. So the first thing you would want to do is extract it out of your DAO into a class that you can either mock or point to a specific test database, which you can setup and inspect before and after your tests run.

A technical solution for testing db/DAO code might be dbunit. You can define your test data in a schema-less XML and let dbunit populate it in your test database. But you still have to wire everything up yourself. With Spring however you could use something like spring-test-dbunit which gives you lots of leverage and additional tooling.

As you call yourself a total beginner I suspect this is all very daunting. You should ask yourself if you really need to test your database code. If not you should at least refactor your code, so you can easily mock out all database access. For mocking in general, have a look at Mockito.

@Test
public void testSearchManagementStaff() throws SQLException
{
    boolean res=true;
    ManagementDaoImp mdi=new ManagementDaoImp();
    boolean b=mdi.searchManagementStaff("[email protected]"," 123456");
    assertEquals(res,b);
}