My experience with CI/CD pipelines involves setting up and maintaining automated processes to ensure the continuous integration and delivery of code. While I have primarily worked with JUnit for unit testing, I have also implemented automated testing strategies to uphold code quality.

In one of my projects, we used Jenkins as our CI/CD tool. I configured Jenkins pipelines to automate the build, test, and deployment processes. For automated testing, we integrated JUnit for unit tests and Espresso for UI tests. These tests were triggered automatically with every code commit, allowing for immediate validation of any new changes.

To ensure the effectiveness of automated testing, I focused on the following:

1. **Comprehensive Test Coverage**: Writing extensive unit tests and UI tests to cover various scenarios and edge cases, which helped catch bugs early in the development cycle.

2. **Test Reliability**: Ensuring that the tests were reliable and not flaky, which involved stabilizing the tests to provide consistent results.

3. **Continuous Monitoring**: Monitoring test results and promptly addressing any failures, which helped maintain a high standard of code quality.

4. **Code Reviews**: Incorporating automated code review tools like SonarQube to analyze the code for potential issues and ensure adherence to coding standards.

By integrating these practices into the CI/CD pipeline, we maintained a high level of code quality and ensured that the application remained stable and performant throughout the development process.