Testing on Dev notes

Useful commands for inspecting sbt build

Wed, 29 May 2024 00:00:00 +0000

TL;DR Today I learned a few useful commands to help you understand complex sbt builds.

task timing

JAVA_OPTS=-Dsbt.task.timings=true sbt

inspecting task

inspect module/taskName

inspecting task tree

inspect tree module/taskName

Hide irrelevant data in your PRs

Fri, 05 Jan 2024 00:00:00 +0000

TL;DR Today I learned that you can hide irrelevant changes from Github PRs. The syntax for .gitattributes can be tricky though.

In my current project, it’s sometimes necessary to re-generate and commit a bunch of files to the repository. This can happen when you store some IaC or test data in the repository.

Sample repository

To demonstrate the problem, here’s an example repository: https://github.com/majk-p/nice-pr-diffs that features two PRs:

The first one is hard to read https://github.com/majk-p/nice-pr-diffs/pull/1/files because it features a wall of text - new testing data that has been added.

Integration testing with Weaver and Localstack

Fri, 29 Dec 2023 00:00:00 +0000

When creating software that makes heavy use of cloud infrastructure, it is wise to test the integration in the end-to-end fashion. Doing so in cloud environment is one option, but it may not be viable for all cases. It can be pricy and you cannot do it in an local environment.

A popular solution to this problem is to run Localstack and test your code against it. In this post we’ll explore how to manage your Localstack resources for E2E tests using Testcontainers, Cats-effect Resource and Weaver.