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Unit Tests
with every push

CodeBeaver writes and runs your tests - spotting bugs.

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Used in repositories with over 46.9kstars

Why CodeBeaver

01

Get New Unit Tests

CodeBeaver will write new unit tests, based on your code changes. The tests will be in a new, neatly formatted PR.
02

Get More Edge Cases

If a test file already exists, CodeBeaver will update it to cover more edge cases.
03

Spot bugs

If your code breaks a test due to a bug, CodeBeaver will leave you a PR comment explaining what's wrong and how to fix it.
04

Auto-maintain tests

If your new code breaks an old test, CodeBeaver will update the test to reflect the new code.

Can't I just generate tests with Copilot or Cursor?

Writing the initial test is only 10% of the work. The real time sink is:

Running the tests and fixing syntax errors
Debugging failing assertions
Sifting through test results
Maintaining tests as your code evolves

CodeBeaver handles all of this for you - delivering ready-to-merge, working tests that actually run.

Examples

See it in action

Check out live or demo Pull Requests

Use Cases:
Test updated
Test added
Bug found
Preview of One Utils class is updated with one more function
demo
typescript
jest
Test updated
Preview of Unittest complete demo
demo
python
unittest
Test updated
Test added
Bug found
Preview of undefined
live
python
pytest
Test added

FAQS

Common Questions

How It Works

Finally, a C.I. that understands your code

Running your tests blindly is so 2010.

1

Read & Understand

CodeBeaver reads your code and comments to understand what your functions are supposed to do.

2

Run Tests

CodeBeaver runs your entire Unit Test suite just like traditional CI does.

3

Analyze Failures

If tests fail, CodeBeaver determines if it's due to outdated tests or actual code issues.

4

New Tests are added/updated

CodeBeaver identifies missing test cases and writes new unit tests if needed. Everything in a new Pull Request you can review.

5

Comprehensive Report

CodeBeaver provides a detailed overview of all findings and improvements.

Don't worry about unit tests again.

CodeBeaver writes and runs your tests - spotting bugs.

Get started