Testing & Quality Assurance

Tools that check software actually works before it ships.

Write your tests as plain English sentences a manager could understand, and behave turns them into real automated checks.

A highlighter that marks exactly which lines of your code your tests actually touched, and which you're flying blind on.

A factory line for test data: define the blueprint once, then stamp out as many realistic fake records as you need.

A machine that invents thousands of realistic fake names and addresses so you never test with John Smith again.

Instead of you thinking up test cases, this library invents thousands of weird ones trying to break your code.

A convincing stunt double for the parts of your code too slow, expensive, or risky to actually run during a test.

The spiritual successor to a beloved testing tool that quietly retired, keeping its plugin-friendly spirit alive.

The tool that lets you write 'assert this works' in plain Python and get a genuinely helpful answer when it doesn't.

Teach a computer to click, type, and check your software the exact same way, every single time, forever.

A robot that installs your software in a dozen clean, empty rooms and checks it still works in every single one.