AWS Certified DevOps Engineer – Professional (DOP-C02) — Question 369

A company is implementing a CI/CD pipeline for an application by using AWS CodePipeline and AWS CodeBuild. The company needs a solution to run unit tests and automatically generate code coverage reports before any code is deployed to production. The CI/CD pipeline execution must fail if the code coverage is less than 80%.

Which solution will meet these requirements?

Answer options

• A. Create an AWS Lambda function to run unit tests and generate code coverage reports. Add a Lambda invoke action to a stage in the CodePipeline pipeline. Create an Amazon EventBridge scheduled rule to run hourly to monitor the Lambda function's output. Configure the rule to fail the pipeline if coverage is less than 80%.
• B. Create an AWS Step Functions workflow to run unit tests and generate code coverage reports. Add a Step Functions test action to a stage in the CodePipeline pipeline to invoke the workflow. Configure the workflow to fail if the code coverage is less than 80%.
• C. Create a CodeBuild project with a buildspec.yml file that includes commands to run unit tests and generate code coverage reports. Add a CodeBuild test action to a stage in the CodePipeline pipeline. Configure the CodeBuild test action to use the source artifacts from the source action as input. Modify the buildspec.yml file to fail the build if coverage is less than 80%.
• D. Create a CodeBuild project with Jenkins installed. Configure Jenkins to run unit tests and generate code coverage reports. Add a Jenkins test action to a stage in the CodePipeline pipeline. Configure the Jenkins test action to output the coverage report as an output artifact. Configure an approval action to fail the pipeline if code coverage is less than 80%.

Correct answer: C

Explanation

AWS CodeBuild natively supports running test commands and generating code coverage reports via the buildspec.yml file. By configuring the buildspec.yml to fail the build when coverage is under 80%, CodePipeline will automatically stop the pipeline execution. Other solutions involving Lambda, Step Functions, or Jenkins introduce unnecessary complexity and operational overhead for a task that CodeBuild can handle natively.