ZVzvonimirs·Jun 22, 2023Submission
Show HN: CLI tool that writes unit tests for Node.js apps with GPT-4
2 points · Open discussionPythagora-io
pythagora
JavaScript2023–2023
Pythagora-io / pythagora
pythagora
Generate automated tests for your Node.js app via LLMs without developers having to write a single line of code.
Developer ToolsData & DatabasesAI & Machine LearningWeb DevelopmentTesting & QualityAutomation & Workflows
4Distinct people
7Mentions
0Explicit recommenders
1.8KGitHub stars
What to know before exploring
What it is
Generate automated tests for your Node.js app via LLMs without developers having to write a single line of code.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by week7 dated mentions
Observed mentions: 2023-02-09 15:11:53 UTC to 2023-06-22 14:28:57 UTC. Weeks start Monday, UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Feb 6 | 2023-02-06 00:00:00 UTC | 2023-02-13 00:00:00 UTC | 1 | 1 | 0 |
| Feb 13 | 2023-02-13 00:00:00 UTC | 2023-02-20 00:00:00 UTC | 1 | 1 | 0 |
| Feb 20 | 2023-02-20 00:00:00 UTC | 2023-02-27 00:00:00 UTC | 1 | 1 | 0 |
| Feb 27 | 2023-02-27 00:00:00 UTC | 2023-03-06 00:00:00 UTC | 0 | 0 | 0 |
| Mar 6 | 2023-03-06 00:00:00 UTC | 2023-03-13 00:00:00 UTC | 0 | 0 | 0 |
| Mar 13 | 2023-03-13 00:00:00 UTC | 2023-03-20 00:00:00 UTC | 0 | 0 | 0 |
| Mar 20 | 2023-03-20 00:00:00 UTC | 2023-03-27 00:00:00 UTC | 0 | 0 | 0 |
| Mar 27 | 2023-03-27 00:00:00 UTC | 2023-04-03 00:00:00 UTC | 1 | 1 | 0 |
| Apr 3 | 2023-04-03 00:00:00 UTC | 2023-04-10 00:00:00 UTC | 1 | 1 | 0 |
| Apr 10 | 2023-04-10 00:00:00 UTC | 2023-04-17 00:00:00 UTC | 0 | 0 | 0 |
| Apr 17 | 2023-04-17 00:00:00 UTC | 2023-04-24 00:00:00 UTC | 0 | 0 | 0 |
| Apr 24 | 2023-04-24 00:00:00 UTC | 2023-05-01 00:00:00 UTC | 0 | 0 | 0 |
| May 1 | 2023-05-01 00:00:00 UTC | 2023-05-08 00:00:00 UTC | 0 | 0 | 0 |
| May 8 | 2023-05-08 00:00:00 UTC | 2023-05-15 00:00:00 UTC | 0 | 0 | 0 |
| May 15 | 2023-05-15 00:00:00 UTC | 2023-05-22 00:00:00 UTC | 0 | 0 | 0 |
| May 22 | 2023-05-22 00:00:00 UTC | 2023-05-29 00:00:00 UTC | 1 | 1 | 0 |
| May 29 | 2023-05-29 00:00:00 UTC | 2023-06-05 00:00:00 UTC | 0 | 0 | 0 |
| Jun 5 | 2023-06-05 00:00:00 UTC | 2023-06-12 00:00:00 UTC | 0 | 0 | 0 |
| Jun 12 | 2023-06-12 00:00:00 UTC | 2023-06-19 00:00:00 UTC | 0 | 0 | 0 |
| Jun 19 | 2023-06-19 00:00:00 UTC | 2023-06-26 00:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
7 sourcesPythagora creates automated tests for you by analysing server activity
2 points · Open discussionShow HN: Tool that creates automated tests from server activity with GPT-4
1 points · Open discussionPythagora – get integration tests from server activity without writing any code
2 points · Open discussionGenerate integration tests for your Node.js app by recording server activity
2 points · Open discussionPythagora: Generate tests for your Node.js app by recording server activity
8 points · Open discussionShow HN: Pythagora – auto generated integration tests for Node.js API servers
Hi HN,
I just released my first npm package so wanted to share it here.
Pythagora is a Node.js module that creates automated integration tests for MERN/MEAN apps by recording server activity.
To integrate Pythagora, you need to paste one line of code to your repository and run the Pythagora capture CLI command. Then, just play around with your app and from all API requests and database queries Pythagora will generate integration tests.
When running tests, it doesn’t matter what database is your Node.js connected to or what is the state of that database. Actually, that database is never touched or used —> instead, Pythagora creates a special, ephemeral `pythagoraDb`
database, which it uses to restore the data before each test is executed, that was present at the time when the test was recorded. Because of this, tests can be run on any mac
Read the rest
hine or environment.
Also, *if the request updates the database, after the API returns the response, Pythagora checks the database to see if it was updated correctly*.
Finally, Pythagora tracks (using istanbul/nyc) lines of code that were triggered during tests, so you know how much of your code is covered.
Our goal is to help teams that don’t have time to properly manage their test suite to cover their entire codebase with as little as 1 hour of their time. We tested Pythagora on open source clones of apps like Reddit, IG, etc. and we were able to get to 50% of code coverage within 10 minutes and to 90% within 1 hour of playing around these apps.
Feel free to try out the Pythagora npm package - https://www.npmjs.com/package/pythagora
And the source code on Github - https://github.com/Pythagora-io/pythagora
We’re excited to hear what you think.
How do you write integration tests for an API server? Would you consider using Pythagora instead/along with your system?
If not, we would love to hear what are your concerns and why this wouldn’t work for you?