approval-tests

What problem does it solve?

This Skill automates the creation and maintenance of complex tests by comparing output against pre-approved "golden master" files, significantly reducing the effort required for writing and updating assertions.

Core Features & Use Cases

• Snapshot Testing: Captures complex output once, approves it, and automatically compares future runs against the approved version.
• Characterization Testing: Quickly snapshot the behavior of legacy code before refactoring.
• Combinatorial Testing: Test all input combinations exhaustively without writing individual tests for each case.
• Use Case: When testing a function that generates a detailed HTML report, instead of writing dozens of assertions for specific elements, you can use Approval Tests to capture the entire HTML output, review it, approve it, and then ensure any future changes to the report generation logic are immediately flagged.

Quick Start

Use the approval-tests skill to verify the output of the generate_report function.