安卓-Jacoco-精准测试应用

Jacoco-精准测试

开源地址：https://github.com/seasonxie/JacocoAndroid

不依赖源码执行
接口测试也能直观看出覆盖度
知道什么样的用例保证哪块的代码，更好的精准度测试

安卓-Jacoco-精准测试应用

1.实现jacoco Instrumentation操作（后面通过命令直接启动该instrument，最下面有），注意最后启动了 InstrumentedActivity

public class JacocoInstrumentation extends Instrumentation @Override public void onCreate(Bundle arguments) { super.onCreate(arguments); DEFAULT_COVERAGE_FILE_PATH = "/sdcard/cover.ec"; File file = new File(DEFAULT_COVERAGE_FILE_PATH); if (!file.exists()) { try { file.createNewFile(); } catch (IOException e) { Log.d(TAG, "异常 : " + e); e.printStackTrace(); } } if (arguments != null) { //mCoverage = getBooleanArgument(arguments, "coverage");
            mCoverageFilePath = arguments.getString("coverageFile"); } mIntent = new Intent(getTargetContext(), InstrumentedActivity.class); mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); start(); }

2.在InstrumentedActivity onDestroy设置监听，当触发的时候触发生成jacoco覆盖率文件

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  权限

InstrumentedActivity extends MainActivity { public static String TAG = "InstrumentedActivity"; private FinishListener mListener; public void setFinishListener(FinishListener listener) { mListener = listener; } @Override public void onDestroy() { Log.d(TAG + ".InstrumentedActivity", "onDestroy()"); super.finish(); if (mListener != null) { mListener.onActivityFinished(); } } }

3.触发监听的操作

private void generateCoverageReport() { Log.d(TAG, "generateCoverageReport():" + getCoverageFilePath()); OutputStream out = null; try { out = new FileOutputStream(getCoverageFilePath(), false); Object agent = Class.forName("org.jacoco.agent.rt.RT") .getMethod("getAgent") .invoke(null); out.write((byte[]) agent.getClass().getMethod("getExecutionData", boolean.class) .invoke(agent, false)); } catch (Exception e) { Log.d(TAG, e.toString(), e); } finally { if (out != null) { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } }

启动：

2.1注册instrumentation,通过instrumentation启动被测应用

adb shell am instrument com.jacs.zhaotang.jscscs/test.JacocoInstrumentation

    <instrumentation android:handleProfiling="true" android:label="CoverageInstrumentation" android:name="test.JacocoInstrumentation" android:targetPackage="com.jacs.zhaotang.jscscs"/>

3.把生成的jacoco覆盖率文件放在指定文件夹，用gradle生成htmlreport

将该文件拖至入app根目录/build/outputs/code-coverage/connected下（文件夹没有的话可新建）

运行gradlew jacocoTestReport

task jacocoTestReport(type: JacocoReport) { group = "Reporting" description = "Generate Jacoco coverage reports after running tests." reports { xml.enabled = true html.enabled = true } classDirectories = fileTree( dir: './build/intermediates/classes/debug', excludes: ['**/R*.class', '**/*$InjectAdapter.class', '**/*$ModuleAdapter.class', '**/*$ViewInjector*.class' ]) sourceDirectories = files(coverageSourceDirs) executionData = files("$buildDir/outputs/code-coverage/connected/coverage.ec") doFirst { new File("$buildDir/intermediates/classes/").eachFileRecurse { file ->
            if (file.name.contains('$$')) { file.renameTo(file.path.replace('$$', '$')) } } } }

4.report路径：\jscscs\app\build\reports\jacoco\jacocoTestReport

安卓-Jacoco-精准测试应用

通过广播驱动生成ec：

1.注册广播

 public void onReceive(Context context, Intent intent) { String url = intent.getStringExtra("url"); if (Constants.mListener != null) { Constants.mListener.onActivityFinished(); Toast.makeText(context,"notnull", 0).show(); }else{ Toast.makeText(context,url, 0).show(); } }

 <receiver android:name="test.operationReceiver" android:enabled="true" android:exported="true">
            <intent-filter>
                <action android:name="com.jacs.zhaotang.jscscs.operationReceiver" />
            </intent-filter>
        </receiver>

发送广播：adb shell am broadcast -a com.jacs.zhaotang.jscscs.operationReceiver --es url 'sdsd'

解析xml：

需要提取的覆盖率类型

    public static final String INSTRUCTION="INSTRUCTION"; public static final String BRANCH="BRANCH"; public static final String LINE="LINE"; public static final String COMPLEXITY="COMPLEXITY"; public static final String METHOD="METHOD"; public static final String[] COVERES={INSTRUCTION};

// 获取当前节点的所有属性节点
        List<Attribute> list = node.attributes(); // 遍历属性节点
        for (Attribute attr : list) { if (node.getName().equals("counter")) { // 节点等于 counter
                if (needCollect(attr.getText()) || is) { // 当属性等于INSTRUCTION拿出covered // INSTRUCTION // 拿出该covered
                    is = true; } if (attr.getName().equals("covered") && is) { String p=getFristAttributeText(node.getParent()); data += node.getParent().getName() + " -  "
                            + p + " ---  "
                            + currentCovered+"-"+attr.getName() + " ----- " + attr.getText() + "  "; is = false; break; } } }

获取A和B两次代码的覆盖率

method -  unRegisterObserver ---  INSTRUCTION-covered ----- 14 method -  getLastLocation ---  INSTRUCTION-covered ----- 18 method -  setCachedLocation ---  INSTRUCTION-covered ----- 0 method -  getCachedLocation ---  INSTRUCTION-covered ----- 11 method -  setCachedLocationTime ---  INSTRUCTION-covered ----- 0 method -  getCacheLocationTime ---  INSTRUCTION-covered ----- 11 method -  hasCachedLocation ---  INSTRUCTION-covered ----- 10 method -  <init> ---  INSTRUCTION-covered ----- 6 method -  onReceive ---  INSTRUCTION-covered ----- 10 Spent 785  //消耗时间

打印A/B两次的不同覆盖值
 A: class -  com/android/browser/AutoLoginLinearLayout ---  INSTRUCTION-covered ----- 20 B: class -  com/android/browser/AutoLoginLinearLayout ---  INSTRUCTION-covered ----- 0

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安卓-Jacoco-精准测试应用

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