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Test

Unit, plan, matrix, and regression test generation.

Jalaran Test generates unit tests, test plans, coverage matrices and regression suites from code or from a specification, with output shaped to your framework.

Who Test is for

For developers who intend to write tests and keep not doing it, and specifically for legacy code with no coverage where the blocker is deciding what to test first rather than writing the assertions.

What Test does

Test completes the development trio: Code writes it, Debug fixes it, Test verifies it. Four modes cover different needs: unit tests from code, a test plan from a specification, a coverage matrix showing what is and is not exercised, and a regression suite around a bug you just fixed. Prompts are calibrated per framework rather than generic, because pytest and Jest disagree about almost everything.

  • Unit, plan, matrix and regression modes
  • Framework-aware output
  • Works from code or from a specification
  • Regression suites built around a bug you just fixed

How Test works

  1. Choose the mode

    Unit tests, a test plan, a coverage matrix, or a regression suite. Different problems, different outputs.

  2. Supply code or a spec

    Both work. A spec produces a plan; code produces tests you can run.

  3. Set the framework

    Output is shaped to it, because pytest and Jest disagree about nearly everything that matters.

  4. Review before trusting

    A generated test that asserts the wrong thing passes forever and hides the bug it was meant to catch.

What Test does not do

Test generates tests from what you show it and cannot know your real edge cases, business rules or integration boundaries. Generated tests need review: one that asserts incorrect behaviour will pass forever and actively conceals the bug, which is worse than having no test. It does not execute anything or measure real coverage, and the coverage matrix reflects the code you supplied rather than an instrumented run.

Common questions

Can I trust generated tests without reading them?
No. A test asserting the wrong behaviour passes forever and hides the bug it was supposed to catch: strictly worse than no test at all. Review every one.
Does it run the tests or measure coverage?
No. It generates; your test runner executes. The coverage matrix reflects the code you supplied, not an instrumented run.
Does it find my edge cases?
Only the ones implied by what you showed it. Real edge cases usually come from business rules and integration boundaries it cannot see.

All modules in Coding

  • Code

    New

    A code assistant on Jalaran’s own servers that generates, completes and reviews code in five languages.

  • Structured debugging with hypothesis tracking.

  • Turn a feature brief into a structured test strategy.

  • Turn rough notes into clean, reproducible bug reports with a transparent severity score.

  • Check a Postgres or Supabase schema for missing RLS, indexes and owner scoping.

Ready when you are.

Works in your browser and installs on your phone.

Try Test freeOpen Test