[英]Empty Jacoco report for Android Espresso
I am trying to get code coverage for my Android project using Espresso tests. 我正在尝试使用Espresso测试为我的Android项目获取代码覆盖率。 However, Jacoco is giving me back a report saying that I don't cover anything.
然而,Jacoco正在给我一份报告说我没有报道任何事情。 I made a demo app to highlight my problem and that is here .
我做了一个演示应用程序来突出我的问题,就在这里 。
If you don't want to go to Github to look at the project, here is the build.gradle file: 如果你不想去Github查看项目,这里是build.gradle文件:
apply plugin: 'com.android.application'
apply plugin: 'jacoco'
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "ninja.bryansills.jacocotest"
minSdkVersion 16
targetSdkVersion 22
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
packagingOptions {
exclude 'LICENSE.txt'
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_7
targetCompatibility JavaVersion.VERSION_1_7
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
testCoverageEnabled true
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.1.1'
androidTestCompile 'com.android.support.test:runner:0.2'
androidTestCompile 'com.android.support.test:rules:0.2'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.1'
}
Based on the issue pointed out by Ligol, here is what worked for me. 根据Ligol指出的问题,这对我有用。
package com.example;
import android.os.Bundle;
import android.support.test.runner.AndroidJUnitRunner;
import android.util.Log;
import java.lang.reflect.Method;
public class AndroidJacocoTestRunner extends AndroidJUnitRunner {
static {
System.setProperty("jacoco-agent.destfile", "/data/data/"+BuildConfig.APPLICATION_ID+"/coverage.ec");
}
@Override
public void finish(int resultCode, Bundle results) {
try {
Class rt = Class.forName("org.jacoco.agent.rt.RT");
Method getAgent = rt.getMethod("getAgent");
Method dump = getAgent.getReturnType().getMethod("dump", boolean.class);
Object agent = getAgent.invoke(null);
dump.invoke(agent, false);
} catch (Throwable e) {
Log.d("JACOCO", e.getMessage());
}
super.finish(resultCode, results);
}
}
android{
...
defaultConfig {
....
testInstrumentationRunner "com.example.AndroidJacocoTestRunner"
}
}
Your problem might be related to this issue. 您的问题可能与此问题有关。
https://code.google.com/p/android/issues/detail?id=170607 https://code.google.com/p/android/issues/detail?id=170607
我在三星设备上遇到了同样的问题,我没有改变任何东西,但改为HTC设备,我开始得到覆盖。用JaCoCo三星设备似乎有点可疑。
I advise everyone not to use a Samsung device while generating coverage reports. 我建议大家在生成报道时不要使用三星设备。 I tried everything to fix the 0 coverage issue and luckily changed my device to Redmi Note 5 Pro and voila the coverage starts showing.
我尝试了一切来解决0覆盖问题并幸运地将我的设备更改为Redmi Note 5 Pro并且瞧瞧覆盖范围开始显示。 On doing some research and reading some articles I found Samsung give less freedom to its user to use their products for testing.
在做一些研究和阅读一些文章时,我发现三星给用户提供了更少的自由来使用他们的产品进行测试。 Though you can do the testing on Samsung devices after rooting them.
虽然你可以在生根后对三星设备进行测试。
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