# Edge case tests (/testing--test-edge-cases)

/testing--test-edge-cases is a Claude Code skill in the Code section. Generates tests for boundaries, nulls, concurrency, Unicode and state in your code, explaining which bug each one would catch.

- Web version: https://skills.sgomez.dev/en/s/testing--test-edge-cases
- Section: [Code](https://skills.sgomez.dev/en/code.md)
- Author: Santiago Gómez de la Torre
- License: MIT
- Source: https://github.com/sgomez-dev/claude-skills/blob/main/skills/testing/test-edge-cases.md
- Updated 26 Mar 2026

## How to ask for it

- `/testing--test-edge-cases generate edge cases for this validation function`
- `/testing--test-edge-cases what boundary cases am I missing on this endpoint?`
- `/testing--test-edge-cases add tests for null and empty values`

## Install

macOS · Linux:

```
curl -fsSL https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.sh | bash
```

Windows:

```
irm https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.ps1 | iex
```

Claude Code plugin:

```
/plugin marketplace add sgomez-dev/claude-skills
/plugin install testing-skills@claude-skills-collection
```

## Permissions

- Reads: `**/*`
- Writes: `**/*.test.*`, `**/*.spec.*`
- Runs: —
- Network: No
- Destructive: No

## Author's description

Generate edge case and boundary tests that catch the bugs others miss

- [How we review this](https://skills.sgomez.dev/en/methodology.md)