在多个测试活动以E preSSO空指针 [英] Testing across multiple activities with Espresso Null Pointer

问题描述

我运行一个测试，带我到另一个活动。当我去，我需要等待对话框消失。

 公共类StressTest扩展ActivityInstrumentationTestCase2＆LT; D​​ashboardActivity＆GT; {DashboardActivity活动;
ConsoleActivity consoleActivity;
公共StressTest（）{
    超（DashboardActivity.class）;
}公共无效设置（）抛出异常{
    super.setUp（）;
    活性= getActivity（）;
}公共无效testRun（）抛出InterruptedException的{
    时间表（）;
    快速开始（）;
    IP.enterIP（）;
＆LT; -----------方式无法HERE从NPE -------------------＆GT;
    而（consoleActivity.getConnectDialog（）=空＆放大器;！＆放大器; consoleActivity.getConnectDialog（）isShown（））{
        视频下载（
    }
}
 

正如你所看到的，我开始在 DashboardActivity 。那么一旦到 ConsoleActivity ，我需要检查 ConnectDialog 。我怎样才能做到这一点没有得到一个NPE？

修改

 公共无效testRun（）抛出InterruptedException的{
    时间表（）;
    快速开始（）;
    IP.enterIP（）;
    视频下载（500）;    getInstrumentation（）。runOnMainSync（新的Runnable（）{
        @覆盖
        公共无效的run（）{
            收集和LT;活动＆GT; resumedActivities = ActivityLifecycleMonitorRegistry.getInstance（）getActivitiesInStage（Stage.RESUMED）。
            Log.d（RESUMED活性大小，+ resumedActivities.size（））;            如果（resumedActivities.size（）== 1）{
                consoleActivity =（ConsoleActivity）resumedActivities.iterator（）next（）方法。
            }其他{            }
        }
    }）;
    而（consoleActivity.getConnectDialog（）=空＆放大器;！＆放大器; consoleActivity.getConnectDialog（）isShown（））{
        视频下载（1000）;
    }
 

日志

  Log.d（ACTIVITES，的getClass：。+ resumedActivities.iterator（）next（）方法的getClass（）的getName（）+ConsoleActivity：+ ConsoleActivity。 class.getName（））;
 

印刷：

  D / ACTIVITES：的getClass：com.android.lonewolf.activity.console.ConsoleActivity ConsoleActivity：com.android.lonewolf.activity.console.ConsoleActivity
 

解决方案

您收到一个NullPointerException异常，因为你的 consoleActivity 未初始化。
下面放code之前而（）。

EDITED

 的Iterator＆LT;活性GT;迭代器;
活动活动;
收集和LT;活动＆GT; resumedActivities;
getInstrumentation（）。runOnMainSync（新的Runnable（）{
    公共无效的run（）{
            resumedActivities = ActivityLifecycleMonitorRegistry.getInstance（）
                .getActivitiesInStage（Stage.RESUMED）;
            迭代= resumedActivities.iterator（）;
            }
        }
    }）;
而（iterator.hasNext（））{
    活性= iterator.next（）;
    如果（activity.getClass（）的getName（）。等于（ConsoleActivity.class.getName（）））{
        consoleActivity =（ConsoleActivity）活性;
    }
}
 

和进口ActivityLifecycleMonitorRegistry：

 进口com.google.android.apps.common.testing.testrunner.ActivityLifecycleMonitorRegistry;
 

I am running a test that takes me in to another activity. When I get to that I need to wait for a dialog to disappear.

  public class StressTest extends ActivityInstrumentationTestCase2<DashboardActivity> {

DashboardActivity activity;
ConsoleActivity consoleActivity;


public StressTest() {
    super(DashboardActivity.class);
}

public void setUp() throws Exception {
    super.setUp();
    activity = getActivity();
}

public void testRun() throws InterruptedException {
    schedule();
    quickstart();
    IP.enterIP();
<-----------FAILS HERE FROM A NPE------------------->
    while (consoleActivity.getConnectDialog() != null && consoleActivity.getConnectDialog().isShown()){
        Thread.sleep(
    } 
}

As you can see, I am starting in DashboardActivity. Then Once in to ConsoleActivity, I need to check for ConnectDialog. How can I do this without getting a NPE?

EDIT

 public void testRun() throws InterruptedException {
    schedule();
    quickstart();
    IP.enterIP();
    Thread.sleep(500);

    getInstrumentation().runOnMainSync(new Runnable() {
        @Override
        public void run() {
            Collection<Activity> resumedActivities = ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(Stage.RESUMED);
            Log.d("RESUMED ACTIVITY SIZE", "" + resumedActivities.size());

            if(resumedActivities.size() == 1){
                consoleActivity = (ConsoleActivity) resumedActivities.iterator().next();
            } else {

            }
        }
    });
    while (consoleActivity.getConnectDialog() != null && consoleActivity.getConnectDialog().isShown()){
        Thread.sleep(1000);
    }

LOGS

Log.d("ACTIVITES", "getClass: " + resumedActivities.iterator().next().getClass().getName() + " ConsoleActivity: " + ConsoleActivity.class.getName());

printed :

 D/ACTIVITES﹕ getClass: com.android.lonewolf.activity.console.ConsoleActivity ConsoleActivity: com.android.lonewolf.activity.console.ConsoleActivity

解决方案

You receive a NullPointerException because your consoleActivity isn't initialized. Put code below before while().

EDITED

Iterator<Activity> iterator;
Activity activity;
Collection<Activity> resumedActivities;
getInstrumentation().runOnMainSync(new Runnable() {
    public void run() {
            resumedActivities = ActivityLifecycleMonitorRegistry.getInstance()
                .getActivitiesInStage(Stage.RESUMED);
            iterator = resumedActivities.iterator();
            }
        }
    });
while(iterator.hasNext()){
    activity = iterator.next();
    if(activity.getClass().getName().equals(ConsoleActivity.class.getName())){
        consoleActivity = (ConsoleActivity)activity;
    }
}

And import ActivityLifecycleMonitorRegistry:

import com.google.android.apps.common.testing.testrunner.ActivityLifecycleMonitorRegistry;

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