我怎样才能获得@BeforeClass和@AfterClass相当于Junit3？

问题描述

我想与测试装置取代它之前备份我的应用程序的数据库。我被迫使用，因为Android的限制Junit3，我想实现@BeforeClass的@AfterClass相当于行为。

要实现@BeforeClass等价，我一直在使用一个静态变量，这样在第一次运行时初始化它，但我需要能够运行所有的测试后恢复数据库。我想不出检测当最后测试已经运行的方式（因为我相信没有保证测试执行的顺序。）

 公共类MyTest的扩展ActivityInstrumentationTestCase2＆LT; MainActivity＆GT; {
    私有静态布尔firstRun = TRUE;

    @覆盖
    保护无效设置（）{
        如果（firstRun）{
            firstRun = FALSE;
            setUpDatabaseFixture（）;
        }
    }
    ...
}
 

解决方案

从 JUnit的网站：

 公共静态测试套件（）{
    返回新TestSetup（新的TestSuite（YourTestClass.class））{

        保护无效设置（）抛出异常{
            的System.out.println（全局设置）;
        }
        保护无效tearDown的（）抛出异常{
            的System.out.println（环球tearDown的）;
        }
    };
}
 

I want to back up my application's database before replacing it with the test fixture. I'm forced to use Junit3 because of Android limitations, and I want to implement the equivalent behavior of @BeforeClass an @AfterClass.

To achieve the @BeforeClass equivalent, I had been using a static variable and initializing it during the first run like this, but I need to be able to restore the database after running all the tests. I can't think of a way of detecting when the last test has run (since I believe there is no guarantee on the order of test execution.)

public class MyTest extends ActivityInstrumentationTestCase2<MainActivity> {
    private static boolean firstRun = true;

    @Override
    protected void setUp() {
        if(firstRun) {
            firstRun = false;
            setUpDatabaseFixture();
        }
    }
    ...
}

解决方案

From the junit website:

public static Test suite() {
    return new TestSetup(new TestSuite(YourTestClass.class)) {

        protected void setUp() throws Exception {
            System.out.println(" Global setUp ");
        }
        protected void tearDown() throws Exception {
            System.out.println(" Global tearDown ");
        }
    };
}

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