Question

我在编写用于启动量角器测试的npm脚本时遇到了麻烦。文档https://github.com/angular/protractor/blob/master/docs/server-setup.md之后似乎首先要运行

./node_modules/.bin/protractor test/integration/conf.js

并在我开始实际测试时保持运行

"scripts": {
    "protractor-update": "./node_modules/.bin/webdriver-manager update",
    "protractor-start": "./node_modules/.bin/webdriver-manager start",
    "protractor-init": "npm run protractor-update && npm run protractor-start",
    "test-protractor": "npm run protractor-start && ./node_modules/.bin/protractor test/integration/conf.js",
},

我希望这两个步骤在一个npm脚本中执行，所以我最终会得到这样的结果：

./node_modules/.bin/webdriver-manager start

现在显然问题是> FATAL EXCEPTION: main > java.lang.RuntimeException: Unable to start activity > ComponentInfo{com.myapp/com.myapp.MainActivity}: > java.lang.NullPointerException > at > android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) > at > android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) > at android.app.ActivityThread.access$600(ActivityThread.java:141) > at > android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) > at android.os.Handler.dispatchMessage(Handler.java:99) > at android.os.Looper.loop(Looper.java:137) > at android.app.ActivityThread.main(ActivityThread.java:5041) > at java.lang.reflect.Method.invokeNative(Native Method) > at java.lang.reflect.Method.invoke(Method.java:511) > at > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) > at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) > at dalvik.system.NativeStart.main(Native Method) > Caused by: java.lang.NullPointerException > at > com.myapp.frags.FirstFragment.onCreateView(FirstFragment.java:91) > at android.app.Fragment.performCreateView(Fragment.java:1695) > at > android.app.FragmentManagerImpl.moveToState(FragmentManager.java:885) > at > android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1057) > at android.app.BackStackRecord.run(BackStackRecord.java:682) > at > android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1435) > at android.app.Activity.performStart(Activity.java:5113) > at > android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2153) > at > android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) > at android.app.ActivityThread.access$600(ActivityThread.java:141) > at > android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) > at android.os.Handler.dispatchMessage(Handler.java:99) > at android.os.Looper.loop(Looper.java:137) > at android.app.ActivityThread.main(ActivityThread.java:5041) > at java.lang.reflect.Method.invokeNative(Native Method) > at java.lang.reflect.Method.invoke(Method.java:511) > at > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) > at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) > at dalvik.system.NativeStart.main(Native Method) **My Fragment layout:** <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/first_frg_layout" xmlns:fab="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" > <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/mRelative" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" > <android.support.design.widget.CoordinatorLayout android:layout_height="match_parent" android:layout_width="match_parent"> <FrameLayout android:id="@+id/content_frame" android:layout_width="match_parent" android:layout_height="match_parent" > <com.melnykov.fab.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|right" android:layout_margin="16dp" android:src="@drawable/ic_done" fab:fab_colorNormal="@color/primary" /> </FrameLayout> <android.support.v7.widget.RecyclerView android:id="@+id/my_recycler_view" android:layout_width="match_parent" android:layout_height="match_parent" android:scrollbars="vertical" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" /> </android.support.design.widget.CoordinatorLayout> </RelativeLayout>没有返回退出代码，所以它永远不会发出下一个命令。

实现这一目标的正确方法是什么？

Answer 1

我和你有同样的问题。这是我在浏览StackOverflow并在同事的帮助下找到的解决方案。

在package.json中：

"scripts": {
  "e2e": "bash run-e2e-tests.sh"
}

bash文件：

# Start selenium server and trash the verbose error messages from webdriver
webdriver-manager start 2>/dev/null &
# Wait 3 seconds for port 4444 to be listening connections
while ! nc -z 127.0.0.1 4444; do sleep 3; done
#  run protractor
protractor test/e2e/conf.js

Answer 2

答案在于shell脚本基础知识。

使用＆amp;

将webdriver放在后台

所以例如

webdriver-manager start &

这将运行webdriver-manager，然后立即将控制权返回给shell，允许您输入后续命令。

您需要在通过某种机制（例如kill %1或pkill webdriver-manager）完成测试后终止webdriver-manager。否则你最终会有几十个未使用的webdriver进程在运行...

Answer 3

您可以同时使用解决您的问题。

使用以下命令同时安装。

npm install concurrently --save

然后在package.json中使用，如下所示：

"e2e:all-steps": "concurrently -k -s first \"./node_modules/.bin/webdriver-manager update\" \"./node_modules/.bin/webdriver-manager start\" \"npm run protractor-update && npm run protractor-start\" \"npm run protractor-start && ./node_modules/.bin/protractor test/integration/conf.js\""

希望有帮助。：-）

webdriver-manager启动完成后运行量角器

3 个答案: