millionco

millionco / expect

Public

Let agents test your code in a real browser

expect.dev agent browser expect test
249
10
100% credibility
Found Mar 25, 2026 at 249 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
TypeScript
AI Summary

Expect is a command-line tool that enables AI coding agents to automatically generate and execute end-to-end browser tests for code changes.

How It Works

1
🔍 Discover Expect

You hear about Expect, a friendly tool that helps AI test your website changes automatically in a real browser.

2
📥 Get started

Run one simple command in your project folder to set it up and connect your AI helper.

3
💬 Tell it what to test

Type a simple sentence like 'check the login works' and pick which changes to check.

4
🧠 AI makes a smart plan

Your AI buddy scans your code and creates a clear step-by-step test plan just for your changes.

5
🚀 Review and go

Glance at the plan in the colorful menu, tweak if needed, and hit go to start testing.

6
👀 Watch it happen

See your site open in a browser as the AI clicks around, just like a real user would.

✅ Celebrate success

Get a full report with pass/fail checks, video replays, and know your changes are solid.

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Star Growth

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AI-Generated Review

What is expect?

Expect is a TypeScript CLI tool that lets AI agents like Claude or Codex test your frontend code changes in a real browser. Run `npx expect-cli@latest` to scan unstaged files, branches, or diffs, generate a natural-language test plan (e.g., "test the login flow"), and execute it automatically—complete with replays, screenshots, and videos. It solves the pain of manual E2E testing by turning expectations into browser actions without writing a single test file.

Why is it gaining traction?

Unlike Jest's expect matchers or traditional tools, it uses agents to dynamically plan and run tests on live dev servers, handling git contexts like PRs or unstaged changes out of the box. The ink-based TUI makes it interactive: pick ports, sync cookies, save reusable flows, or post results to GitHub PRs. Developers love the "github let's do automation" vibe—zero setup for smoke tests on every change.

Who should use this?

Frontend devs validating UI flows on branches or PRs, especially those with AI coding agents like Cursor or Claude Code. Ideal for solo hackers tired of flaky Cypress suites or teams expecting rain on CI without browser coverage—use it pre-push to catch regressions fast.

Verdict

Try it if you're into agent-driven workflows; the TUI and git integration deliver quick wins despite 249 stars and 1.0% credibility signaling early days. Maturity lags (light docs, no broad adoption), but for TypeScript/React projects, it's a solid automation bet—install globally and audit your workspace first.

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