Validate PRs

[CDWizard]

How can I effectively test large code changes submitted via pull requests (PRs) locally, before merging them into the main codebase?

This is particularly important for open-source and private projects, where contributors may submit significant code additions or modifications.

[NayanUnni95]

1. Fetch and Checkout the PR Branch

Fetch the PR branch to your local repository:

# Fetch the PR (replace `<pr-number>` with the PR number)
git fetch origin pull/<pr-number>/head:pr-<pr-number>

Switch to the fetched PR branch:

2. Set Up the Development Environment

Install Dependencies

Configure Environment Variables

Prepare Resources

3. Run Unit and Integration Tests

Execute Tests

Analyze Test Coverage

Address Failures

4. Perform Manual Testing

Simulate Scenarios

Inspect Code Quality

Identify Security Concerns

5. Merge Locally and Test

Merge the PR branch with the target branch locally for final testing:

# Merge the PR branch locally
git merge origin/pull/<pr-number>/head

Professional Workflow

Leverage CI/CD Pipelines

Utilize Code Review Tools

Communicate Effectively

[hirushavinushka99]

To effectively test large code changes from pull requests (PRs) locally:

1. Review the PR: Understand the purpose, scope, and changes made.
2. Isolate Testing: Set up a clean environment to replicate production.
3. Run Tests: Execute the existing test suite and add new tests for the changes if needed.
4. Manual Testing: Validate new features or fixes to ensure proper functionality.
5. Check Standards: Run static analysis tools to ensure code quality.
6. Assess Performance: Test for performance impacts if the changes are significant.
7. Evaluate Dependencies: Review and test any new or updated dependencies.
8. Simulate Integration: Test the changes locally with the main branch for compatibility.
9. Provide Feedback: Communicate issues or suggestions to the contributor for adjustments.

This ensures the PR is robust and ready for merging.