Question

我编写了一个线程池，但我无法为该类编写Junits（PowerMock）。

public enum ThreadPool {
INSTANCE;

private static final String THREAD_POOL_SIZE = "threadpool.objectlevel.size";
private static TPropertyReader PROP_READER = new PropertyReader();
private final ExecutorService executorService;
private static final ILogger LOGGER = LoggerFactory
        .getLogger(ReportExecutorObjectLevelThreadPool.class.getName());

ThreadPool() {
    loadProperties();
    int no_of_threads = getThreadPoolSize();
    executorService = Executors.newFixedThreadPool(no_of_threads);

}

public void submitTask(Runnable task) {
    executorService.execute(task);
}

private static void loadProperties() {
    try {
        PROP_READER.loadProperties("Dummy");
    } catch (final OODSystemException e) {
        LOGGER.severe("Loading properties for app failed!");
    }
}

private int getThreadPoolSize() {
    return Integer.valueOf(PROP_READER
            .getProperty(THREAD_POOL_SIZE));
}
}

在模拟这个类的时候，我在行 PROP_READER.loadProperties（＆＃34; DUMMY＆＃34;）中得到 NullPointerException ;

我的测试案例是： -

PowerMockito.whenNew(PropertyReader.class).withNoArguments().thenReturn(mockPropertyReader);
PowerMockito.doNothing().when( mockPropertyReader,"loadProperties",anyString());
mockStatic(ThreadPool.class);

Answer 1

首先，您需要设置枚举的内部状态，因为枚举是最终类并且将在类加载

上加载枚举的实例

PowerMockito.mockStatic(ThreadPool .class);

然后

doNothing().when(mockInstance).loadProperties(any(String.class));

然后嘲笑

@RunWith(PowerMockRunner.class)
@PrepareForTest({ThreadPool.class})

不要忘记在测试中添加以下注释

http://website.com  -->  cstp://website.com
ftp://website.com  -->  oftp://website.com
https://website.com  -->  ctcps://website.com

如果它仍然不起作用，你需要看看你需要在内部状态中设置哪个类的更多成员

使用PowerMock模拟枚举时静态字段为空

1 个答案: