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Test Case Generator

Test cases that cover the edge cases you'd forget to write

Test Case Generator generates test cases from a function or a described behavior — including the edge cases that are easy to skip when you're testing your own code.

Testing your own code means testing your own assumptions

It's hard to write thorough tests for code you just wrote, because the edge cases you'd miss are usually the same ones you didn't think of while writing the logic in the first place.

What Test Case Generator does

Test Case Generator generates test cases from a function or a described behavior, including edge cases — null inputs, boundary values, unexpected types — that are easy to overlook when testing your own assumptions.

Key capabilities

Generated from real code or behavior

Works from an existing function or a plain description of expected behavior.

Edge case coverage

Includes null inputs, boundary values, and unexpected types, not just the happy path.

Matches your test framework

Generated in the format your project's test suite already uses.

Regenerate as code changes

Update test cases quickly when the underlying function changes.

How it works

  1. Add a function or describe the behavior

    Whichever you have — real code or a description.

  2. Get generated test cases

    Covering the happy path and the edge cases likely to be missed.

  3. Review and integrate

    Add them to your existing test suite.

Example output

Function

function divide(a, b) { return a / b }

Generated test cases

1) divide(10, 2) returns 5. 2) divide(10, 0) — verify expected behavior for division by zero. 3) divide(-10, 2) returns -5. 4) divide(0, 5) returns 0.

Pricing
Starting at €3,99/mo on the Pro plan (EUR) — included in every AI Developer Suite plan.

Frequently asked questions

Included in every plan

Start covering your edge cases today, or see the full plan comparison first.