How to get code coverage using Android Studio?

问题:

I am developing apps using Android Studio.
I was able to run the test code.
But, I do not know how to get code coverage in android studio.

I have already seen the following links.
Android Gradle Code Coverage
But I can't wait for update to v0.6 supporting emma.

Project configuration is as follows.

Main code
MyProject/AppName/src/main/java/mypackage/MyClass.java

Test code
MyProject/AppName/src/instrumentTest/java/mypackage/test/MyClassTest.java

Project configuration
MyProject
├─build.gradle
└─AppName
    ├─build.gradle
    └─src
        ├─main
        │  ├─java
        │  │  └─mypackage
        │  │      └─MyClass.java
        │  ├─res
        │  └─AndroidManifest.xml
        └─instrumentTest
            └─java
                └─mypackage
                    └─test
                        └─MyClassTest.java

回答1:

With the new Android Studio 1.2, you are able to run your unit tests and see the coverage all within the IDE.

First, you'll need to get your unit tests running in the IDE. (if you already can, then skip this step)

This guide and demo will help you.

Secondly, you'll need to create a JUnit Run configuration

Inside this configuraiton, you'll be able to choose

• Test Kind: "All in Package"
• Package: [the package where your tests reside, eg: "com.myapp.tests"]
• Search for tests: Across Module Dependencies (could be diff for your setup)
• VM -options: -ea
• Working Directory: [your project's directory]
• Use classpath of mod: [select your module]

If you have any issue creating your JUnit Run Configuration, you should visit this guide for help.

Lastly, in the latest Android Studio, you should be able to run your JUnit-Run Configuration by clicking on the 'Run with Coverage' button.

---

In Android Studio 2.1.3 the is label Run Unit tests with Coverage where Unit test is the name of your test configuration as shown in the following screenshot:

回答2:

There are so much answers showing how to apply jacoco plugin to Android studio project, which is outdated, and wasted me so much time to figure out the solution for recently Android studio(My Android Studio is version 2.1.2).

• Jacoco plugin is built in for Android Studio gradle, what you need to do is just enable it like following:

  buildTypes {
    ...
    debug {
      testCoverageEnabled true
    }
  }

• After you do above, run unit test task ./gradlew testDebugUnitTest

• Then create coverage files: ./gradlew createDebugCoverageReport

• Coverage files will be created under <module>/build/reports/coverage/debug folder,include index.html, which you can open it with browser, and report.xml which you can use to get a report by jenkins jacoco plugin or other continues integration tools.

For those who got 0% coverage with jenkins jacoco plugin, be sure to use the right version. quote from their site:

Unfortunately JaCoCo 0.7.5 breaks compatibility to previous binary formats of the jacoco.exec files. The JaCoCo plugin up to version 1.0.19 is based on JaCoCo 0.7.4, thus you cannot use this version with projects which already use JaCoCo 0.7.5 or newer. JaCoCo plugin starting with version 2.0.0 uses JaCoCo 0.7.5 and thus requires also this version to be used in your projects. Please stick to JaCoCo plugin 1.0.19 or lower if you still use JaCoCo 0.7.4 or lower

回答3:

We use maven to build our app and cobertura for code coverage reporting

both are really easy to integrate

android maven integration:

http://www.vogella.com/tutorials/AndroidBuildMaven/article.html

Maven + Cobertura Code Coverage Example:

http://www.mkyong.com/qa/maven-cobertura-code-coverage-example/

回答4:

I don't think you can see visual code coverage report inside Android Studio. But you could try Jacoco. You will need to integrate it in your build.gradle file. You can find the similar question & solution here

回答5:

Android studio gradle has inbuilt Jacoco plugin which you can use to find code coverage. I have written as article to step by step configure jaococo to find code coverage for Espresso test case but you can use it for Robotium as well. check this out.

http://qaautomated.blogspot.in/2016/03/how-to-find-code-coverage-with-jacoco.html

回答6:

Have you tried using the Jacoco plugin for getting code coverage for your project? It is a good plugin giving you coverage based on your package or individual classes. I am not sure how you configure Jacoco to use with Gradle since i use Maven. Check the link: and see if it helps you