pglite
latte
| pglite | latte | |
|---|---|---|
| 6 | 3 | |
| 4,506 | 7 | |
| 13.1% | - | |
| 8.4 | 8.3 | |
| 28 days ago | 3 months ago | |
| TypeScript | Go | |
| Apache License 2.0 | MIT License |
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pglite
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Show HN: I open-sourced the in-memory PostgreSQL I built at work for E2E tests
Hey HN! For a few months, I've been building pgmock at work for our E2E and unit test suite. It emulates Postgres in WebAssembly and has full feature parity with production databases.
The cool thing about it is that you don't need any external processes or proxies. If your platform can run WASM (Node.js, browser, etc.), it can probably run pgmock. Creating a new database with mock data is as simple as creating a JavaScript object.
It's a bit different from the amazing pglite [1] (which inspired me to open-source pgmock in the first place). While pgmock runs an x86 emulator, pglite compiles a Postgres fork to native WASM directly and is hence much faster and more lightweight. However, it only supports single-user mode and a select few extensions, so you can't connect to it with normal Postgres clients (which is quite crucial for E2E testing).
Theoretically, it could be modified to run any Docker image on WebAssembly platforms. Anything specific you'd like to see?
Happy hacking!
[1] https://github.com/electric-sql/pglite
- Pgmock: In-memory Postgres for unit/E2E tests
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Soul: A SQLite REST and Realtime Server
I've found postgres via docker to be fine for dev and testing, but there are various epheremal postgres scripts, plus this could be promising for node stuff https://github.com/electric-sql/pglite if it works out. I'd imagine if this does work out we'll see the same kind of builds for other runtimes as well (like python)
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The Cell Programming Language
> Use SQLite for everything, or Postgres if you outgrow it.
Or both! ElectricSQL syncs front end SQLlite back to server side postgres. And they just rebuilt postgres on pure WASM (https://github.com/electric-sql/pglite). All ties together with a CRDT.
I'm not affiliated, but just think it's just cool to imagine calls to front end sqllite as the be-all-end-all.
- Testcontainers
- PGlite – Postgres in WASM
latte
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Testcontainers
Test containers is such a game changer for integration testing, they have language specific docker apis that make it trivial to bring up containers and verify that they are ready doe testing.
Pretty much every project I create now has testcontainers for integration testing :)
I setup CI so it lints, builds, unit tests then integration tests (using testcontainers)
https://github.com/turbolytics/latte/blob/main/.github/workf...
Their language bindings provide nice helper functions for common database operations (like generating a connection uri from a container user)
https://github.com/turbolytics/latte/blob/main/internal/sour...
- Show HN: Save Prometheus SLO data to Kafka or fvector for long term storage
- Show HN: Signals Collector ETA data from mongo/Postgres to Kafka
What are some alternatives?
dockertest - Write better integration tests! Dockertest helps you boot up ephermal docker images for your Go tests with minimal work.
services-flake - NixOS-like services for Nix flakes
otj-pg-embedded - Java embedded PostgreSQL component for testing
gradle-docker-compose-plugin - Simplifies usage of Docker Compose for integration testing in Gradle environment.
nammayatri - A Direct-to-Driver open mobility platform powering the next-generation of mobility applications in India.