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In-memory Postgres for unit/E2E tests

Home Page: https://stackframe-projects.github.io/pgmock/

License: MIT License

TypeScript 18.47% JavaScript 81.53%

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pgmock's Issues

Make PostgresMock.runShellCommand return the shell output

Question: Which version of postgres does pg-mock have?

as per title

Improve migration performance

Currently, migration took about 20-30 seconds which is too slow for testing.
We also need to reset db after each test so 20-30 seconds wait time between each tests is not viable.
We need a solution for this, so we can bring it down to sub 1 second.

Improve documentation

Right now, the only documentation is the docstrings in the source code. I should generate a webpage from those

Errors aren't correctly displayed when using Firefox

As reported here, when pgmock is unhappy with a SQL query it throws an unexpected error instead of showing the details:

select foo();
Error.captureStackTrace is not a function

Fortunately, @rezonant was quickly able to explain the likely problem (this is a Firefox specific issue), which should help get this fixed:

Yes, that's a nonstandard function provided by v8, so it wouldn't work on Firefox. [1]

This can be worked around by just constructing an Error and taking it's stack property,
captureStackTrace is just a convenience function, so hopefully they can fix that.

[1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#error.capturestacktrace

README link to "Supabase & Snaplet" is dead

Thanks for publishing this!

The README links to the URL https://github.com/supabase/postgres-wasm for "Supabase & Snaplet", but that link currently 404s.

How hard would it be to adapt this abstraction to MySQL?

Hey 👋 ,

I'm one of the developers who worked on https://github.com/snaplet/postgres-wasm, I'm super happy to see that our work helped and that you were able to pull this off to make it usable! I added a shoutout to this project in the README. 😍

I see that you wrote an entire network adapter for it which I suppose is at the emulator level, so I'm wondering how hard it would be to have MySQL running in the browser now.

Again, congrats, mad work!

Simplify plugin installation

Currently, you can install plugins with runShellCommand, but this is needlessly difficult and unhandy.

Failed to create extension`uuid-ossp`

When trying to run:

create extension if not exists "uuid-ossp";

it fails with

error: could not open extension control file "/usr/share/postgresql/extension/uuid-ossp.control": No such file or directory
    at <anonymous> (/Users/scott/project/node_modules/pg/lib/client.js:526:17)

Is this meant to be supported? Or is there a specific process to get extensions working?

Similar alternatives for Mysql/MariaDB

Cool project!

Has anyone seen similar Mysql/MariaDB alternative?
Looking for simple in-memory innoDB implementation.

Demo link give 404

The link to the demo / GitHub pages link gives a 404 / page not found.

RangeError: Maximum call stack size exceeded

I'm trying to add pgmock in our E2E testing suite using NestJS, TypeORM + Jest.

I get the following error thrown though:

Unhandled Rejection at: Promise {
      <rejected> TypeError: Cannot read properties of undefined (reading '0')
          at Object.<anonymous>.r.Bitmap.get (/<REDACTED>/node_modules/pgmock/dist/main.js:3039:25)
          at E.Object.<anonymous>.E.unpack_memory (/<REDACTED>/node_modules/pgmock/dist/main.js:10548:19)
          at E.Object.<anonymous>.E.set_state (/<REDACTED>/node_modules/pgmock/dist/main.js:10491:14)
          at E.Object.<anonymous>.E.restore_state (/<REDACTED>/node_modules/pgmock/dist/main.js:8124:18)
          at D.Object.<anonymous>.D.restore_state (/<REDACTED>/node_modules/pgmock/dist/main.js:2881:25)
          at Y.d (/<REDACTED>/node_modules/pgmock/dist/main.js:12413:35)
          at listOnTimeout (node:internal/timers:569:17)
          at processTimers (node:internal/timers:512:7)
    } reason: TypeError: Cannot read properties of undefined (reading '0')
        at Object.<anonymous>.r.Bitmap.get (/<REDACTED>/node_modules/pgmock/dist/main.js:3039:25)
        at E.Object.<anonymous>.E.unpack_memory (/<REDACTED>/node_modules/pgmock/dist/main.js:10548:19)
        at E.Object.<anonymous>.E.set_state (/<REDACTED>/node_modules/pgmock/dist/main.js:10491:14)
        at E.Object.<anonymous>.E.restore_state (/<REDACTED>/node_modules/pgmock/dist/main.js:8124:18)
        at D.Object.<anonymous>.D.restore_state (/<REDACTED>/node_modules/pgmock/dist/main.js:2881:25)
        at Y.d (/<REDACTED>/node_modules/pgmock/dist/main.js:12413:35)
        at listOnTimeout (node:internal/timers:569:17)
        at processTimers (node:internal/timers:512:7)

...

RangeError: Maximum call stack size exceeded

      at _ZN3v863cpu3cpu12do_page_walk17h3226b305185b420aE (wasm:/wasm/0060a6c6:1:471691)
      at _ZN3v863cpu3cpu21call_interrupt_vector17h15f125d3196b6ae5E (wasm:/wasm/0060a6c6:1:734657)
      at _ZN3v863cpu3cpu12do_page_walk17h3226b305185b420aE (wasm:/wasm/0060a6c6:1:472412)
      at _ZN3v863cpu3cpu21call_interrupt_vector17h15f125d3196b6ae5E (wasm:/wasm/0060a6c6:1:734657)
      at _ZN3v863cpu3cpu12do_page_walk17h3226b305185b420aE (wasm:/wasm/0060a6c6:1:472412)
      at _ZN3v863cpu3cpu21call_interrupt_vector17h15f125d3196b6ae5E (wasm:/wasm/0060a6c6:1:734657)
      at _ZN3v863cpu3cpu12do_page_walk17h3226b305185b420aE (wasm:/wasm/0060a6c6:1:472412)
      at _ZN3v863cpu3cpu21call_interrupt_vector17h15f125d3196b6ae5E (wasm:/wasm/0060a6c6:1:734657)
      at _ZN3v863cpu3cpu12do_page_walk17h3226b305185b420aE (wasm:/wasm/0060a6c6:1:472412)
      at _ZN3v863cpu3cpu21call_interrupt_vector17h15f125d3196b6ae5E (wasm:/wasm/0060a6c6:1:734657)
      at _ZN3v863cpu3cpu12do_page_walk17h3226b305185b420aE (wasm:/wasm/0060a6c6:1:472412)
      at _ZN3v863cpu3cpu21call_interrupt_vector17h15f125d3196b6ae5E (wasm:/wasm/0060a6c6:1:734657)
      at _ZN3v863cpu3cpu12do_page_walk17h3226b305185b420aE (wasm:/wasm/0060a6c6:1:472412)

Any ideas what this might indicate?

how do i use with jest/typescript?

no amount of transform ignore stuff seems to work

is there a standard way? i just get this:

import nodecrypto from "crypto";
    ^^^^^^

    SyntaxError: Cannot use import statement outside a module

Will it support cjs?

Jest work for cjs as default, if pgmock support cjs, it will easier to use.

How to add pg extensions

How would I add pg extensions, e.g. pgvector, to pgmock? I see the binaries folder and assume that's where the secret source is. It would be nice if there were documentation on how to generate them, or even better, a script. Thanks!

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