断言void方法junit测试

Question

我正在为下面提到的void方法编写测试用例。有人能帮我提供正确的断言语句来测试这个方法吗。

public void contextInitialized(com.servlet22.ServletContextEvent sce)
{       
try {
// if 'corePoolSize' is 0 then it means no idle thread will be there. Only one active job will be functional.
int corePoolSize = Integer.parseInt(sce.getServletContext().getInitParameter(Constants.WOJOB_JOB_THREAD_NUMBER));
scheduler = new ScheduledThreadPoolExecutor(corePoolSize);
//context created
String woPropFile = EnvironmentBasedConfigurationHandler.getInstance().getValue(sce.getServletContext().getInitParameter(Constants.WO_CONFIGURATION_FILE));
Properties woProp = new Properties();
InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(woPropFile);
woProp.load(is);
String ftpConfigFile = EnvironmentBasedConfigurationHandler.getInstance().getValue(sce.getServletContext().getInitParameter(Constants.FTP_CONFIGURATION_FILE));
String dbConfigFile = EnvironmentBasedConfigurationHandler.getInstance().getValue(sce.getServletContext().getInitParameter(Constants.DB_CONFIGURATION_FILE));
WOJob.init(ftpConfigFile, dbConfigFile, woProp);
WOJob woJob = WOJob.getInstance(scheduler);
scheduler.schedule(woJob, 2, TimeUnit.SECONDS);
logger.log("WOJobInitializerListener.contextInitialized()", "Configuration file path fetched from web.xml and WOJob has initialized and started");
} catch (Throwable th) {
StringWriter sw = new StringWriter();
th.printStackTrace(new PrintWriter(sw));
logger.log("WOJob.run()", "Unable to initialize WOJob Thread due to : " + sw.toString());
}        
}

Junit测试，我已经写在下面-

public class WOJobInitializerListenertest {
ServletContext servletCtx = Mockito.mock(ServletContext.class);
ServletContextEvent sce = Mockito.mock(ServletContextEvent.class);
@Test
public void test() {
Mockito.when(Integer.parseInt(sce.getServletContext().getInitParameter(Constants.WOJOB_JOB_THREAD_NUMBER))).thenReturn(0); 
Mockito.when(EnvironmentBasedConfigurationHandler.getInstance().getValue(sce.getServletContext().getInitParameter(Constants.WO_CONFIGURATION_FILE))).thenReturn("wo.properties");  
Mockito.when(EnvironmentBasedConfigurationHandler.getInstance().getValue(sce.getServletContext().getInitParameter(Constants.FTP_CONFIGURATION_FILE))).thenReturn("ftp.config");    
Mockito.when(EnvironmentBasedConfigurationHandler.getInstance().getValue(sce.getServletContext().getInitParameter(Constants.DB_CONFIGURATION_FILE))).thenReturn("db.config");  
WOJobInitializerListener el = new WOJobInitializerListener();

/*what assert can be used?*/
}
}

Answer 1

验证是否调用了某些函数如何？

演示：

@Mock
ScheduledThreadPoolExecutor scheduler;

/*what assert can be used?*/
verify(scheduler).schedule(anyObject(), 2, TimeUnit.SECONDS);