使用套件进行JUnit合同测试

Question

public interface UserRepository {

    Set<User> search(String query);

    Set<User> findBySomethingSpecific(String criteria1, Integer criteria2);
}

public abstract UserRepositoryTest {

    private UserRepository userRepository;

    @Before
    public void setUp() {
        userRepository = createUserRepository();
    }

    @Test public void aTestForSearch() { ... }
    @Test public void anotherTestForSearch() { ... }

    @Test public void aTestForSomethingSpecific() { ... }
    @Test public void anotherTestForSomethingSpecific() { ... }

    protected abstract UserRepository createUserRepository();
}

//------------------------

public class UserRepositoryImplementationTest extends UserRepositoryTest {

    @Override
    protected UserRepository createUserRepository() {
         return new UserRepositoryImplementation();
    }
}

Answer 1

在JUnit4中，您可以创建如下所示的套件：

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.runner.RunWith;
import org.junit.runners.Suite;

@RunWith(Suite.class)
@Suite.SuiteClasses({
  TestFeatureLogin.class,
  TestFeatureLogout.class,
  TestFeatureNavigate.class,
  TestFeatureUpdate.class
})

/**
 * 
 * This suite will execute TestFeatureLogin,TestFeatureLogout,TestFeatureNavigate and TestFeatureUpdate one after the over.
 * 
 * @Before, @After and @Test are no possible of executing in this class.
 * @BeforeClas and @AfterClass are allowed only.  
 * 
 * */
public class FeatureTestSuite {
    // the class remains empty of test,although it is possible set up a before class and after class annotations.
    // used only as a holder for the above annotations

    @BeforeClass
    static public void beforeClass(){
        System.out.println(FeatureTestSuite.class.toString() + " BeforeClass Method");
    }

    @AfterClass
    static public void AfterClass(){
        System.out.println(FeatureTestSuite.class.toString() + " AfterClass Method");
    }   
}

完整的示例可以在这里找到

您必须考虑的另一件事是@Test不是抽象类中单元测试的好实践。如果您想测试您的实现，请创建扩展抽象类的测试类。