Agent skill · Testing & QA

cli-e2e-test-harness

Set up E2E test harness for CLI applications with process spawning and assertions.

a5c-aigithub.com/a5c-aiGitHub ↗
claude-codecodexcan modify filesMIT
Install
npx skills add a5c-ai/babysitter --skill cli-e2e-test-harness --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 2
SKILL.md size: 2 KB
Bundled scripts: none
Allowed tools: ReadWriteEditBashGlobGrep
Path: library/specializations/cli-mcp-development/skills/cli-e2e-test-harness/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 1,642
Language: JavaScript

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

# CLI E2E Test Harness Set up E2E test harness for CLI applications. ## Generated Patterns ```typescript import { spawn, SpawnOptions } from 'child_process'; interface CLIResult { stdout: string; stderr: string; exitCode: number | null; } export async function runCLI(args: string[], options?: SpawnOptions): Promise<CLIResult> { return new Promise((resolve) => { const proc = spawn('node', ['./dist/index.js', ...args], { env: { ...process.env, NO_COLOR: '1' }, ...options, }); let stdout = ''; let stderr = ''; proc.stdout?.on('data', (data) => { stdout += data; }); proc.stderr?.on('data', (data) => { stderr += data; }); proc.on('close', (exitCode) => { resolve({ stdout, stderr, exitCode }); }); }); } export function expectOutput(result: CLIResult) { return { toContain: (text: string) => expect(result.stdout).toContain(text), toMatchSnapshot: () => expect(result.stdout).toMatchSnapshot(), toExitWith: (code: number) => expect(result.exitCode).toBe(code), }; } ``` ## Target Processes - cli-unit-integration-testing - mcp-server-testing-suite

What's inside
Steps it walks through
  1. Generated Patterns
  2. Target Processes
Ships with 1 file
  • README.md
More from babysitter
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About this skill
What does the cli-e2e-test-harness skill do?

Set up E2E test harness for CLI applications with process spawning and assertions.

How do I install it?

Run `npx skills add a5c-ai/babysitter --skill cli-e2e-test-harness --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

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