What is Bats in shell scripting?

Bats (Bash Automated Testing System) is a TAP-compliant testing framework that provides a simple, natural syntax for writing unit tests for shell scripts.

How do I test command output in Bats?

You can use the 'run' command followed by assertions on the '$output' variable for full text or the '$lines' array for line-by-line verification.

Is Bats compatible with shells other than Bash?

While Bats itself runs in Bash, this skill provides patterns to test if your scripts remain compatible with Sh, Dash, and other POSIX-compliant shells.

Can I mock external commands with this skill?

Yes, this skill includes specific patterns for command stubbing and function mocking to isolate your scripts from external dependencies during testing.

Does this support CI/CD integration?

Absolutely, it provides ready-to-use patterns for GitHub Actions and Makefiles to automate your shell testing process in your deployment pipeline.

Bats Testing Patterns

Name: Bats Testing Patterns
Author: Krosebrook

byKrosebrook

•

Security & Testing

Master the Bash Automated Testing System (Bats) to write robust unit and integration tests for shell scripts and utilities.

This skill provides comprehensive guidance for implementing the Bash Automated Testing System (Bats) to ensure the reliability of shell scripts and CLI tools. It covers essential patterns including exit code assertions, output verification, complex file system state testing, and advanced techniques like mocking external commands and stubbing environment variables. Whether you're building CI/CD pipelines or developing complex shell utilities, these patterns help you implement test-driven development (TDD) for shell environments, ensuring cross-dialect compatibility and production-grade script quality.

Key Features

01Integration guides for GitHub Actions and Makefile-based automation workflows

02Comprehensive assertion patterns for exit codes and multi-line output verification

03Automated setup and teardown patterns for managing test fixtures and temporary files

04Cross-shell compatibility testing (Bash, Sh, Dash) for portable scripts

05Advanced mocking and command stubbing techniques for isolated unit tests

061 GitHub stars

Use Cases

01Validating CI/CD pipeline scripts and automation workflows to prevent regressions

02Testing shell script behavior across different Unix environments and shell dialects

03Implementing Test-Driven Development (TDD) for complex Bash utilities

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add krosebrook/source-of-truth-monorepo bats-testing-patterns

For use in Claude.ai and ChatGPT

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