Jacoco Coverage 0% After Updating Gradle 7.4 to 0.8.7 in Android App using EC File: A Step-by-Step Guide to Resolve the Issue

Are you stuck with 0% Jacoco coverage after updating your Gradle version from 7.4 to 0.8.7 in your Android app using an EC file? Don’t worry, you’re not alone! In this article, we’ll take you through a comprehensive step-by-step guide to resolve this issue and get your code coverage back on track.

Understanding the Issue

Before we dive into the solution, let’s understand what might be causing the 0% Jacoco coverage issue. When you update your Gradle version, it can sometimes lead to compatibility issues with your existing configurations, including your Jacoco setup. The EC file plays a crucial role in defining the coverage rules for your Android app, and a misconfigured EC file can result in 0% coverage.

Causes of 0% Jacoco Coverage

• Incompatible Gradle version
• Misconfigured EC file
• Incorrect Jacoco plugin configuration
• Clashing dependencies

Prerequisites

Before you start resolving the issue, make sure you have the following prerequisites in place:

• Android Studio 4.2 or later
• Gradle 0.8.7 or later
• Jacoco plugin installed
• EC file configured for code coverage

Step-by-Step Solution

Follow these steps to resolve the 0% Jacoco coverage issue:

Step 1: Update Your Gradle Configuration

In your `build.gradle` file, update the Gradle version to 0.8.7 and add the Jacoco plugin:

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.8.7'
        classpath 'org.jacoco:org.jacoco.core:0.8.7'
    }
}

Step 2: Configure the EC File

In your EC file, update the `coverage` block to include the correct Jacoco version:

ec {
    ...
    coverage {
        jacoco {
            version = '0.8.7'
        }
    }
}

Step 3: Update the Jacoco Plugin Configuration

In your `build.gradle` file, update the Jacoco plugin configuration to match the updated Gradle version:

apply plugin: 'jacoco'

jacoco {
    toolVersion = '0.8.7'
}

Step 4: Run the Jacoco Report

In your terminal, run the following command to generate the Jacoco report:

./gradlew jacocoTestReport

Step 5: Verify the Coverage Report

Open the generated coverage report in your browser and verify that the coverage percentage is no longer 0%:

file:///path/to/your/project/coverage-report/index.html

Troubleshooting Tips

If you’re still facing issues, try the following troubleshooting tips:

• Check the Gradle version compatibility with your existing configurations
• Verify that the EC file is correctly configured and updated
• Ensure that the Jacoco plugin is correctly installed and configured
• Check for clashing dependencies that might affect the Jacoco report

Conclusion

With these steps, you should now have resolved the 0% Jacoco coverage issue after updating your Gradle version from 7.4 to 0.8.7 in your Android app using an EC file. Remember to regularly update your configurations to ensure compatibility with the latest Gradle versions and Jacoco plugins. Happy coding!

Keyword	Frequency
Jacoco coverage	5
Gradle 0.8.7	3
Android app	2
EC file	4

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