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Introducing Test Budget: a linter for test performance

Your test suite didn’t get slow all at once. It won’t get fast all at once either. Start by making sure it stops getting worse.
Matheus Richard
March 17, 2026
Combine Capybara selectors to avoid the sequential timeout trap

How I shaved over a minute off a test suite with a one-line change.
Matheus Richard
March 6, 2026
What Shoulda Matchers Is Actually Doing For You

Rails model specs full of setup and error-message checks? There’s a reason so many teams replace them using shoulda-matchers. We’ll look at what those expectations are doing, how they make your tests more resilient to changes, and a lot less noisy.
Matheus Sales
January 23, 2026
- RSpec
- Rails
- Shoulda
- Ruby
- Testing
This week in #dev (Jan 9, 2026)

Overriding Rails credentials, a helper to submit forms with images and how to count tests with rspec’s –dry-run option.
thoughtbot
January 19, 2026
- This Week In Dev
- TIL
- Testing
- Rails
The Arrange/Act/Assert pattern

Organizing tests for readability.
Justin Toniazzo
December 16, 2025
- Testing
- Development
- Ruby
- Rails
Testing is software engineering

Skimping on tests doesn’t speed you up; it just leaves you flying blind.
Justin Toniazzo
December 15, 2025
- Testing
- Development
This week in #dev (Feb 21, 2025)

Highlights of what happened in our #dev channel on Slack this week.
thoughtbot
March 7, 2025
- This Week In Dev
- Ruby
- Tip
- Testing
Seeds...of Destruction! 🌱 ➡️ 💥

Untested seeds can grow into giant, crushing vines.
Louis Antonopoulos
March 5, 2025
- Ruby
- Rails
- Ruby On Rails
- Testing
- Development
This week in #dev (Jan 24, 2025)

Avoiding ReDoS attacks, using Active Resource in modern Rails, and how to improve flaky tests with Playwright.
thoughtbot
February 3, 2025
- This Week In Dev
- TIL
- Security
- Testing
- Rails
Things you might not need in your tests

Your test suite is slow and flaky because it does too much.
Matheus Richard
January 29, 2025
- Testing
- Performance
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