What is Bats in the context of shell testing?

Bats (Bash Automated Testing System) is a TAP-compliant testing framework that provides a simple syntax for testing shell scripts, making it easy to verify exit codes, outputs, and file changes.

How do I mock external commands in Bats?

You can mock commands by creating a temporary directory containing executable 'stubs', adding that directory to the PATH during the test setup, or by exporting mocked functions.

How does this skill help with CI/CD?

It provides standardized configuration patterns for running Bats tests within GitHub Actions and other CI runners, ensuring your shell scripts are validated on every push.

Can I use Bats to test POSIX-compliant scripts?

Yes, while Bats itself runs in Bash, it is excellent for testing scripts written in various dialects including sh, dash, and zsh to ensure cross-shell compatibility.

Bats Shell Testing Patterns

Name: Bats Shell Testing Patterns
Author: Activer007

byActiver007

Security & Testing

Implements comprehensive unit testing for shell scripts using the Bash Automated Testing System (Bats) framework.

About

This skill provides specialized guidance for writing, structuring, and maintaining production-grade test suites for shell scripts and CLI utilities. It covers the full spectrum of Bats testing, from basic exit code and output assertions to advanced mocking of external commands, fixture management, and cross-shell compatibility checks. Ideal for developers automating CI/CD pipelines or building robust shell-based tools, it ensures shell scripts are as reliable and testable as code in higher-level languages by providing standardized patterns for test-driven development in shell environments.

Key Features

Comprehensive setup and teardown strategies for isolated test environments.
Automated fixture management for testing complex file system operations and permissions.
Ready-to-use CI/CD integration patterns for GitHub Actions and Makefile workflows.
Standardized assertion patterns for exit codes, multi-line output, and regex matching.
0 GitHub stars
Advanced command stubbing and function mocking to isolate shell logic from external dependencies.

Use Cases

Creating automated test suites for DevOps, build scripts, and infrastructure-as-code utilities.
Ensuring shell script portability and compatibility across Bash, Sh, and Dash environments.
Validating complex shell utility logic and edge cases before production deployment.

About

Key Features

Comprehensive setup and teardown strategies for isolated test environments.
Automated fixture management for testing complex file system operations and permissions.
Ready-to-use CI/CD integration patterns for GitHub Actions and Makefile workflows.
Standardized assertion patterns for exit codes, multi-line output, and regex matching.
0 GitHub stars
Advanced command stubbing and function mocking to isolate shell logic from external dependencies.

Use Cases

Creating automated test suites for DevOps, build scripts, and infrastructure-as-code utilities.
Ensuring shell script portability and compatibility across Bash, Sh, and Dash environments.
Validating complex shell utility logic and edge cases before production deployment.