Moke测试学习总结:
被测试代码:
public class LoginPresenter {
private UserManager mUserManager = new UserManager();
public void login(String username, String password) {
if (username == null || username.length() == 0) return;
if (password == null || password.length() < 6) return;
mUserManager.performLogin(username, password);
}
}
单元测试
public class LoginPresenterTest {
@Test
public void testLogin() throws Exception {
LoginPresenter loginPresenter = new LoginPresenter();
loginPresenter.login("xiaochuang", "xiaochuang password");
//验证LoginPresenter里面的mUserManager的performLogin()方法得到了调用,同时参数分别是“xiaochuang”、“xiaochuang‘s password”
...
}
}
问题1:么验证 LoginPresenter 里面的 mUserManager 的 performLogin() 方法得到了调用,以及它的参数是正确性呢?
下面开始mock的学习
Moko概念:
Mock的概念,其实很简单,我们前面也介绍过:所谓的mock就是创建一个类的虚假的对象,在测试环境中,用来替换掉真实的对象,以达到两大目的:
- 验证这个对象的某些方法的调用情况,调用了多少次,参数是什么等等
- 指定这个对象的某些方法的行为,返回特定的值,或者是执行特定的动作
验证开始:
试误1:
public class LoginPresenterTest {
@Test
public void testLogin() throws Exception {
Mockito.mock(UserManager.class);
LoginPresenter loginPresenter = new LoginPresenter();
loginPresenter.login("xiaochuang", "xiaochuang password");
UserManager userManager = loginPresenter.getUserManager();
Mockito.verify(userManager).performLogin("xiaochuang", "xiaochuang password"); //<==
}
}
试误2:
public class LoginPresenterTest {
@Test
public void testLogin() throws Exception {
UserManager mockUserManager = Mockito.mock(UserManager.class); //<==
LoginPresenter loginPresenter = new LoginPresenter();
loginPresenter.login("xiaochuang", "xiaochuang password");
Mockito.verify(mockUserManager).performLogin("xiaochuang", "xiaochuang password"); //<==
}
}
正确:
public class LoginPresenter {
private UserManager mUserManager = new UserManager();
public void login(String username, String password) {
if (username == null || username.length() == 0) return;