Android Studio -- 为 Instrumentation Test 清除应用数据 [英] Android Studio -- clear application data for Instrumentation Test

问题描述

如何在不手动运行 adb 命令的情况下让 Android Studio (AndroidJunitRunner) 在仪器测试之前清除应用程序数据?

我发现 android.support.test.runner.AndroidJUnitRunner 是一种作弊——它实际上从未调用 connectedCheck 或 connectedAndroidTest.

1. 从命令行运行时$ gradle connectedCheck

   :MyMainApp:assembleDebug UP-TO-DATE:MyMainApp:assembleDebugTest 最新:MyMainApp:clearMainAppData:MyMainApp:connectedCheck

2. 在 IDE 中通过单击仪器测试配置(带有红色/绿色箭头的绿色 Android 机器人徽标)运行时

   **执行任务:[:MyMainAppApp:assembleDebug, :MyMainAppApp:assembleDebugTest]**

   如你所见，最后一个gradle目标是assembleDebugTest

我在 build.gradle 中的 connectedCheck 上添加了一个钩子，以便在开始仪器测试之前清除主应用程序的数据.

//运行'adb' shell 命令来清除'debug' 变体的主应用程序的应用程序数据任务 clearMainAppData(类型:Exec){//我们必须迭代以找到调试"变体以获得变体引用android.applicationVariants.all { 变体 ->如果(variant.name.equals(调试")){def clearDataCommand = ['adb', 'shell', 'pm', 'clear', getPackageName(variant)]println "正在清除 ${variant.name} 变体的应用数据:[${clearDataCommand}]"命令行 clearDataCommand}}}//在运行仪器测试之前清除应用程序数据(一次)tasks.whenTaskAdded { 任务 ->//这两个目标今天是等价的，尽管在未来 connectedCheck//还将包括 connectedUiAutomatorTest(尚未实现)if(task.name.equals("connectedAndroidTest") || task.name.equals("connectedCheck" )){task.dependsOn(clearMainAppData)}}

我意识到，我也可以在主应用程序中实现清除数据"按钮并让仪表应用程序通过 UI 单击，但我发现该解决方案不可取.

我查看了 AndroidJUnitRunner API 并且有通过 Runlistener 接口的钩子，但钩子是在测试应用程序的上下文中，即在设备上运行，而 Android 禁止一个应用程序从修改另一个应用程序.

第 2 步:只需添加您创建的 gradle 任务

顺便说一下，我的任务看起来像这样:

task clearData(type: Exec) {def clearDataCommand = ['adb', 'shell', 'pm', 'clear', 'com.your.application']命令行 clearDataCommand}

希望这会对某人有所帮助:)

How can I get Android Studio (AndroidJunitRunner) to clear application data preceding an instrumentation test without manually running adb command?

I discovered that android.support.test.runner.AndroidJUnitRunner kind of cheats -- it never actually invokes connectedCheck or connectedAndroidTest.

1. When run from command line $ gradle connectedCheck

   :MyMainApp:assembleDebug UP-TO-DATE
   :MyMainApp:assembleDebugTest UP-TO-DATE
   :MyMainApp:clearMainAppData
   :MyMainApp:connectedCheck
   

2. When run from within IDE by clicking the instrumentation test configuration (green Android robot logo with red/green arrows)

   **Executing tasks: [:MyMainAppApp:assembleDebug, :MyMainAppApp:assembleDebugTest]**
   

   As you can see, the last gradle target is assembleDebugTest

I had added a hook onto connectedCheck in build.gradle to clear the data of the main app before starting the instrumentation test.

// Run 'adb' shell command to clear application data of main app for 'debug' variant
task clearMainAppData(type: Exec) {
    // we have to iterate to find the 'debug' variant to obtain a variant reference
    android.applicationVariants.all { variant ->
        if (variant.name.equals("debug")) {
            def clearDataCommand = ['adb', 'shell', 'pm', 'clear', getPackageName(variant)]
            println "Clearing application data of ${variant.name} variant: [${clearDataCommand}]"
            commandLine clearDataCommand
        }
    }
}
// Clear Application Data (once) before running instrumentation test
tasks.whenTaskAdded { task ->
    // Both of these targets are equivalent today, although in future connectedCheck
    // will also include connectedUiAutomatorTest (not implemented yet)
    if(task.name.equals("connectedAndroidTest") || task.name.equals("connectedCheck" )){
        task.dependsOn(clearMainAppData)
    }
}

I realize that alternatively I could implement a 'clear data' button in the main app and have the instrumentation app click through the UI, but I find that solution undesirable.

I looked at AndroidJUnitRunner API and there are hooks via Runlistener interface but hooks are during the context of the test app, i.e. running on device, and Android forbids one app from modifying another app. http://junit.sourceforge.net/javadoc/org/junit/runner/notification/RunListener.html

Best answer goes to you if you can help me trigger one of the following automatically from within Android Studio:

• execute a command line adb shell pm clear my.main.app.package,
• or preferably invoke my gradle task clearMainAppData

I'm also all ears if there is an alternate way. Surely with device testing automation there should be a clear way to clear application data?

Thank you!

解决方案

I know it's been a while, and hopefully by now you will have this issue sorted.

I ran into that same issue today, and crashed here without any solution.

But I managed to make it work by calling my task from the test configuration.

Step 1 : Go to your test configuration

Step 2 : Simply add the gradle task you created

By the way, the task in my case simply looks like this :

task clearData(type: Exec) {
  def clearDataCommand = ['adb', 'shell', 'pm', 'clear', 'com.your.application']
  commandLine clearDataCommand
}

Hope this will help someone :)

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