Testing YAML means verifying that your files are properly formatted, error-free, and follow the expected structure. This is done with YAML linters and schema validators.
📝 Example YAML Config to Test
Validation result will appear here...
💡 Pro Tip: YAML relies on consistent spaces. No tabs. Ever.
📑 Popular YAML Linters & Validators
yamllint — CLI tool to check YAML files locally. Install via pip install yamllint.
GitHub Actions YAML Validator — Built into GitHub CI pipelines for YAML workflows.
Kubernetes Schema Validator — For testing K8s manifests against schemas.
📌 Common YAML Errors to Test For
Inconsistent indentation (use 2 or 4 spaces, never mix)
Missing colons
Tabs instead of spaces
Incorrectly formatted lists
Unquoted strings containing special characters
📚 Conclusion
Testing YAML is all about clean, valid syntax. Use linters like yamllint, CI validators, or online tools to verify your files. Never ship configs without linting them first!