大神带你如何获得代码覆盖率（上） - 51Testing软件测试论坛

package test;
import android.app.Instrumentation;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import java.io.File;
import java.io.IOException;
public class JacocoInstrumentation extends Instrumentation {
public static String TAG = "JacocoInstrumentation:";
private Intent mIntent;
@Override
public void onCreate(Bundle bundle) {
Log.d(TAG, "onCreate(" + bundle + ")");
super.onCreate(bundle);
String DEFAULT_COVERAGE_FILE_PATH = getContext().getFilesDir().getPath() + "/coverage.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();
}
}
mIntent = new Intent(getTargetContext(), InstrumentedActivity.class);
mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
start();//调用onStart
}
@Override
public void onStart() {
Log.d(TAG, "onStart()");
super.onStart();
startActivitySync(mIntent);
}
//adb shell am instrument com.tachibana.downloader/test.JacocoInstrumentation
}

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package test;
import android.util.Log;
import com.tachibana.downloader.ui.main.MainActivity;
import java.io.FileOutputStream;
import java.io.OutputStream;
public class InstrumentedActivity extends MainActivity {
public static String TAG = "InstrumentedActivity";
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy()");
generateCoverageReport();
}
private void generateCoverageReport() {
String DEFAULT_COVERAGE_FILE_PATH = getFilesDir().getPath() + "/coverage.ec";
Log.d(TAG, "generateCoverageReport():" + DEFAULT_COVERAGE_FILE_PATH);
try {
OutputStream out = new FileOutputStream(DEFAULT_COVERAGE_FILE_PATH, 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));
out.close();
} catch (Exception e) {
Log.d(TAG, e.toString(), e);
}
}
}

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

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<activity
android:name="test.InstrumentedActivity"
android:label="InstrumentationActivity" />

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<instrumentation
android:name="test.JacocoInstrumentation"
android:handleProfiling="true"
android:label="CoverageInstrumentation"
android:targetPackage="com.tachibana.downloader" />

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apply plugin: 'com.android.application'
apply plugin: 'jacoco'//引用插件
jacoco {//插件版本设置
toolVersion = "0.8.5"
}
android {
compileSdkVersion 30
buildToolsVersion "30.0.1"
defaultConfig {
applicationId "com.morn.aaa"
minSdkVersion 23
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunnerArguments clearPackageData: 'true'//instrument设置
}
buildTypes {
debug {
testCoverageEnabled = true//JaCoCo功能启动
}
}
}
//ec文件解析函数
def coverageSourceDirs = [
'../app/src/main/java'
]
task jacocoTestReport(type: JacocoReport) {
group = "Reporting"
description = "Generate Jacoco coverage reports after running tests."
reports {
xml.enabled = true
html.enabled = true
csv.enable = true
}
classDirectories.from = fileTree(
dir: './build/intermediates/javac/debug',
excludes: ['**/R*.class',
'**/*$InjectAdapter.class',
'**/*$ModuleAdapter.class',
'**/*$ViewInjector*.class'
])
sourceDirectories.from = files(coverageSourceDirs)
executionData.from = files("$buildDir/outputs/code-coverage/connected/coverage.ec")
doFirst {
new File("$buildDir/intermediates/javac/").eachFileRecurse { file ->
if (file.name.contains('
这是app/build.gradle的一个例子，关键部分我都加了注释。
　　得到ec文件之后，需要将Android设备下的ec文件，放置到$buildDir/outputs/code-coverage/connected/coverage.ec然后运行jacocoTestReport这个task，运行成功后会在$buildDir/reports/jacoco目录下生成根据eoverage.ec转义的html等文件，html目录下的index.html可以可视化展示代码覆盖率数据。
[align=center][color=rgb(68, 68, 68)][url=http://www.51testing.com/batch.download.php?aid=143392][img]http://www.51testing.com/attachments/2023/01/15326825_2023012915333113zA0.png[/img][/url][/color][/align]
[/size][/font]
)) {
file.renameTo(file.path.replace('
这是app/build.gradle的一个例子，关键部分我都加了注释。
　　得到ec文件之后，需要将Android设备下的ec文件，放置到$buildDir/outputs/code-coverage/connected/coverage.ec然后运行jacocoTestReport这个task，运行成功后会在$buildDir/reports/jacoco目录下生成根据eoverage.ec转义的html等文件，html目录下的index.html可以可视化展示代码覆盖率数据。
[align=center][color=rgb(68, 68, 68)][url=http://www.51testing.com/batch.download.php?aid=143392][img]http://www.51testing.com/attachments/2023/01/15326825_2023012915333113zA0.png[/img][/url][/color][/align]
[/size][/font]
, '
这是app/build.gradle的一个例子，关键部分我都加了注释。
　　得到ec文件之后，需要将Android设备下的ec文件，放置到$buildDir/outputs/code-coverage/connected/coverage.ec然后运行jacocoTestReport这个task，运行成功后会在$buildDir/reports/jacoco目录下生成根据eoverage.ec转义的html等文件，html目录下的index.html可以可视化展示代码覆盖率数据。
[align=center][color=rgb(68, 68, 68)][url=http://www.51testing.com/batch.download.php?aid=143392][img]http://www.51testing.com/attachments/2023/01/15326825_2023012915333113zA0.png[/img][/url][/color][/align]
[/size][/font]
))
}
}
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
}

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