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108 lines
3.7 KiB
Markdown
108 lines
3.7 KiB
Markdown
# Android Coverage
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Android 覆盖率需要使用模拟器或者 root 过的机器。使用 instrument target 构建应用，比如 `$ ant instrument`
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将 `androidCoverage` 传给你设备的 capabilities，并设置为你的 instrument 的 class。
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比如
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```ruby
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caps = { androidCoverage: 'com.example.pkg/com.example.pkg.instrumentation.MyInstrumentation' }
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```
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Appium 会用类似的命令启动应用：`adb shell am instrument -e coverage true -w com.example.pkg/com.example.pkg.instrumentation.MyInstrumentation`
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当你的测试完成时，我们就可以结束覆盖率收集，然后将 coverage.ec 文件从设备里取出来。
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```ruby
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mobile :endCoverage, intent: 'com.example.pkg.END_EMMA', path: '/mnt/sdcard/coverage.ec'
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```
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在 `AndroidManifest.xml` 里定义 instrumentation 和 broadcast 接收器。
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```xml
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<instrumentation
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android:name="com.example.pkg.instrumentation.MyInstrumentation"
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android:targetPackage="com.example.pkg" >
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</instrumentation>
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<!-- adb shell am broadcast -a com.example.pkg.END_EMMA -->
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<receiver android:name="com.example.pkg.instrumentation.EndEmmaBroadcast" >
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<intent-filter>
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<action android:name="com.example.pkg.END_EMMA" />
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</intent-filter>
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</receiver>
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```
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再定义 `EndEmmaBroadcast.java` ：
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```java
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package com.example.pkg.instrumentation;
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import java.io.File;
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import android.annotation.SuppressLint;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.os.Process;
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import android.util.Log;
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// adb shell am broadcast -a com.example.pkg.END_EMMA
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@SuppressLint("SdCardPath")
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public class EndEmmaBroadcast extends BroadcastReceiver {
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@Override
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public void onReceive(Context context, Intent intent) {
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Log.d("AppiumEmma", "EndEmmaBroadcast broadcast received!");
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// reflection is used so emma doesn't cause problems for other build targets
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// that do not include emma.
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try {
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Class.forName("com.vladium.emma.rt.RT")
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.getMethod("dumpCoverageData", File.class, boolean.class, boolean.class)
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.invoke(null, new File("/mnt/sdcard/coverage.ec"), false, false);
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} catch (Exception e) {
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Log.d("AppiumEmma", e.toString());
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}
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// once coverage is dumped, the processes is ended.
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Process.killProcess(Process.myPid());
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}
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}
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```
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定义 `MyInstrumentation.java`：
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```java
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package com.example.pkg.instrumentation;
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import android.app.Instrumentation;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.os.Bundle;
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import android.support.v4.content.LocalBroadcastManager;
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public class MyInstrumentation extends Instrumentation {
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private Intent intent;
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@Override
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public void onCreate(Bundle arguments) {
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intent = getTargetContext().getPackageManager()
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.getLaunchIntentForPackage("com.example.pkg")
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.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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start(); // creates new thread which invokes onStart
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}
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@Override
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public void onStart() {
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startActivitySync(intent);
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LocalBroadcastManager.getInstance(getTargetContext()).registerReceiver(
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new EndEmmaBroadcast(), new IntentFilter("com.example.pkg.END_EMMA"));
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}
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}
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```
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### 报表
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`ant instrument` 命令会生成一个 `coverage.em` 文件。你可以使用 `mobile :endCoverage` 命令来可以下载 某次运行的 coverage.ec 文件。 注意：你可以有很多个 coverage.ec 文件。你可以用下面的命令将他们合并起来：
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> java -cp /path/to/android-sdk-macosx/tools/lib/emma_device.jar emma report -r html -in coverage.em,coverage0.ec,coverage1.ec -sp /path/to/your-app/src
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