Skip to main content
Test Double company logo
Services
Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
Product Management
Launch modern product orgs
Legacy Modernization
Renovate legacy software systems
DevOps
Scale infrastructure smoothly
Upgrade Rails
Update Rails versions seamlessly
Technical Recruitment
Build tech & product teams
Technical Assessments
Uncover root causes & improvements
Case Studies
Solutions
Accelerate Quality Software
Software Delivery, DevOps, & Product Delivery
Maximize Software Investments
Product Performance, Product Scaling, & Technical Assessments
Future-Proof Innovative Software
Legacy Modernization, Product Transformation, Upgrade Rails, Technical Recruitment
About
About
What's a test double?
Approach
Meeting you where you are
Founder's Story
The origin of our mission
Culture
Culture & Careers
Double Agents decoded
Great Causes
Great code for great causes
EDI
Equity, diversity & inclusion
Insights
All Insights
Hot takes and tips for all things software
Leadership
Bold opinions and insights for tech leaders
Developer
Essential coding tutorials and tools
Product Manager
Practical advice for real-world challenges
Say Hello
Test Double logo
Menu
Services
BackGrid of dots icon
Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
Product Management
Launch modern product orgs
Legacy Modernization
Renovate legacy software systems
Cycle icon
DevOps
Scale infrastructure smoothly
Upgrade Rails
Update Rails versions seamlessly
Technical Recruitment
Build tech & product teams
Technical Assessments
Uncover root causes & improvements
Case Studies
Solutions
Solutions
Accelerate Quality Software
Software Delivery, DevOps, & Product Delivery
Maximize Software Investments
Product Performance, Product Scaling, & Technical Assessments
Future-Proof Innovative Software
Legacy Modernization, Product Transformation, Upgrade Rails, Technical Recruitment
About
About
About
What's a test double?
Approach
Meeting you where you are
Founder's Story
The origin of our mission
Culture
Culture
Culture & Careers
Double Agents decoded
Great Causes
Great code for great causes
EDI
Equity, diversity & inclusion
Insights
Insights
All Insights
Hot takes and tips for all things software
Leadership
Bold opinions and insights for tech leaders
Developer
Essential coding tutorials and tools
Product Manager
Practical advice for real-world challenges
Say hello

Insights for great software & great teams

How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

Sign up and get insights delivered to your inbox.

How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

Want to talk shop or tackle a problem in real time? Unpack it with a developer or product manager.

Get our newsletter
Grab time now
Rubber duck holding a caution sign with a snake outline
Developers
Developers
Developers
Pydantically perfect: A beginner’s guide to Pydantic for Python type safety

Introducing Pydantic, a powerful library for type-safe data models in Python. Let’s go through the creation of a simple Pydantic model and the benefits provided.

Gabriel Côté-Carrier
Gabriel Côté-Carrier
Software tooling & tips
A boy stands in front of a circa 2000 PC
Developers
Developers
Developers
C# and .NET tools and libraries for the modern developer
Patrick Coakley
Patrick Coakley
Software tooling & tips
Three people prepare to embark on a journey, holding a compass, map, and binoculars
Leadership
Leadership
Leadership
Turning observability into a team strength without a big overhaul
Gabriel Côté-Carrier
Gabriel Côté-Carrier
Legacy modernization
Two people discuss a pull request review
Developers
Developers
Developers
Why I actually enjoy PR reviews (and you should, too)
Robert Komaromi
Robert Komaromi
Software tooling & tips
All Categories
Click to select
Clear SElection
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Test Double short-form logo against a green background

Double Takes

+ Expand posts
- Collapse POSTS
Test Double short-form logo against a green background

Double Takes

Whenever this kind of thing happens, the biggest mindset shift is not going from single tool to platform (though that's useful to translate to business use cases), it's what happens when you realize there's an entire ecosystem at play here. 🤯

Cathy Colliver

TIL you can use redirect.github.com in links to avoid a back reference being created on github from commits, comments, PRs, etc.

Jason Karns

Test-driven development is to programming what double-entry bookkeeping is to accounting.

Neal Lindsay

The fundamental character flaw of the software creator is not the misguided belief that they can solve any problem with software. Instead, it is the belief they can understand how their own software works before they create it.

Steve Jackson

We may need a SaaS appendix for Zawinski's law:

Any SaaS platform attempts to expand until it is a social network.
Matt Jones

Wow, 1 month for a rewrite seems a little aggressive.

Dustin Tinney
Developers
Developers
Developers
The Law of Demeter: why less is more in code
Dive into the basics of the Law of Demeter. Learn why keeping your code straightforward and avoiding too many dependencies can make all the difference.
Caleb Hearth
Caleb Hearth
Legacy modernization
consulting
testing
Developers
Developers
Developers
Automate like a Luddite: thoughtful steps to better code
Explore how embracing a slower, more intentional approach to automation can improve your software development process. Inspired by Luddite philosophy, learn practical steps to enhance code quality and productivity.
Kyle Adams
Kyle Adams
Accelerate quality software
automation
testing
Developers
Developers
Developers
Adversarial testing: A slightly unorthodox testing philosophy
Discover how an adversarial testing approach can make unit tests exciting and effective by treating code like an opponent to outmaneuver. Say goodbye to frustrating tests and hello to fun!
Pam-Marie Guzzo
Pam-Marie Guzzo
Testing
testing
automation
agile
professional-growth
Double Agent Profile: Ed Frank
Cathy Colliver
Cathy Colliver
No items found.
Developers
Developers
Developers
Mocking callbacks: Speed up your TDD and test driven development
Avoid test delays by using mocking callbacks to achieve isolation in tests. Learn how to enhance your TDD process.
Caleb Hearth
Caleb Hearth
Testing
testing
ruby
automation
postgres
Explosion on top of slide showing code
Please mock me
Looking for a better way to mock things in Ruby? Here's a quick rundown of what it's like to use our new Mocktail library in a RailsConf 2022 lightning talk presented by Justin Searls.
Justin Searls
Justin Searls
Testing
testing
ruby
rails
Developing humility: How to find balance as a developer and a leader
Learn how finding the right balance of humility can improve your skills as a software engineer and leader. Embrace the power of being average.
Pam-Marie Guzzo
Pam-Marie Guzzo
Communication & teams
communication
professional-growth
Developers
Developers
Developers
How to create powerful APIs with GraphQL and Elixir
Join us as we explore the world of API development with GraphQL and Elixir, simplifying data management and boosting performance.
Eric Newbury
Eric Newbury
Software tooling & tips
open-source
api
elixir
data-engineering
Previous
Load more posts
24 / 45
Letter art spelling out NEAT

You're N.E.A.T.!

Technology is a means to an end: answers to very human questions. We want to connect with other folks who share that belief.

Ways to connect
Test Double Executive Leadership Team

Learn about our team

Like what we have to say about building great software and great teams?

Get to know us
Rubber duck with Rubik's cube
Test Double double agents at retreat
Test Double double agents at retreat
Test Double rubber ducks and stickers
Test Double double agents at retreat
A keyboard, glasses, test double logo and rubber duckies.
Two test double employees wearing test double t-shirts embrace and smile at the camera.
Two people embrace and smile at the camera at a group event.
A person laughs at the camera in a group setting with a group of people.
Test double rubber duckie in a pool.
Rubber duck with Rubik's cube
Test Double double agents at retreat
Test Double double agents at retreat
Test Double rubber ducks and stickers
Test Double double agents at retreat
A keyboard, glasses, test double logo and rubber duckies.
Two test double employees wearing test double t-shirts embrace and smile at the camera.
Two people embrace and smile at the camera at a group event.
A person laughs at the camera in a group setting with a group of people.
Test double rubber duckie in a pool.
Rubber duck with Rubik's cube
Test Double double agents at retreat
Test Double double agents at retreat
Test Double rubber ducks and stickers
Test Double double agents at retreat
A keyboard, glasses, test double logo and rubber duckies.
Two test double employees wearing test double t-shirts embrace and smile at the camera.
Two people embrace and smile at the camera at a group event.
A person laughs at the camera in a group setting with a group of people.
Test double rubber duckie in a pool.

Let’s collaborate

We’re the team on a mission to improve how the world builds software.

Let’s talk about how to tackle hard software investment problems across the entire product life cycle.

Get started
Calendar icon

Chat with our team

Test Double Office Hours

Curious about what we're like to work with? We offer 30-minute turbocharged office hours with no strings attached—just pure, unadulterated brainstorm power.

Learn more
Test Double company logo
Improving the way the world builds software.
What we do
Services OverviewSoftware DeliveryProduct ManagementLegacy ModernizationDevOpsUpgrade RailsTechnical RecruitmentTechnical Assessments
Who WE ARE
About UsCulture & CareersGreat CausesEDIOur TeamContact UsNews & AwardsN.E.A.T.
Resources
Case StudiesAll InsightsLeadership InsightsDeveloper InsightsProduct InsightsPairing & Office Hours
NEWSLETTER
Sign up hear about our latest innovations.
Your email has been added!
Oops! Something went wrong while submitting the form.
Standard Ruby badge
614.349.4279hello@testdouble.com
Privacy Policy
© 2020 Test Double. All Rights Reserved.