Code Testing + TDD

Upcase : Test Doubles | RSpec Stub Online Tutorial by thoughtbot

Explore thoughtbot's video tutorials, exercises, and forum discussions on Test Doubles

thoughtbot.com

Upcase : Stubs, Mocks, Spies, and Fakes | Online Video Tutorial by thoughtbot

Joe and Gabe review the four types of test doubles: stubs, mocks, spies and fakes. Learn what the key differences are between each type, as well as when you'd want to consider using them. See examples written using rspec-mocks, as well as an example of a robust fake for braintree.

thoughtbot.com

Make Your Jest Tests up to 20% Faster by Changing a Single Setting

When you have Jest as your test runner, passing the --maxWorkers=50% option will make the tests faster in most cases. For watch mode, use --maxWorkers=25%, and for CI disable Jest workers with --runInBand. You can experiment with the percentage and fine-tune for your particular setup.

dev.to

Mocks Aren't Stubs

I'll begin by illustrating the two styles with a simple example. (The example is in Java, but the principles make sense with any object-oriented language.) We want to take an order object and fill it from a warehouse object. The order is very simple, with only one product and a quantity.

martinfowler.com

Let's Not

RSpec is an excellent test framework with a large community and an active team of maintainers. It sports a powerful DSL that can make testing certain things much easier and more pleasant. However, there are a few features of RSpec's DSL that are frequently overused, leading to an increase in test maintenance and a decrease in test readability.

thoughtbot.com

Common mistakes with React Testing Library

Some mistakes I frequently see people making with React Testing Library.

kentcdodds.com

Mocking JavaScript Requests During Tests - FastRuby.io | Rails Upgrade Service

When we run tests, we don't want to hit external services in most cases, so our tests don't depend on external services and are more stable. We can use gems like VCR or WebMock to stub the requests that are done by the Rails application, but when the request is...

www.fastruby.io

Integrated Tests Are A Scam

UPDATE. It's 2021 and although I still broadly agree with the content of this article, I don't like the style of it any more. I find it too abrasive and judgmental. I'm sorry about that. I leave this article here because I'm not ready to rewrite it just yet.

blog.thecodewhisperer.com

Thread by @GeePawHill: "TDD Pro-Tip: What we TDD most rigorously and faithfully is *our* *branching* *logic*. This is the insight one needs to start gaining TDD's m [...]"

TDD Pro-Tip: What we TDD most rigorously and faithfully is *our* *branching* *logic*. This is the insight one needs to start gaining TDD's massive productivity benefit. All three terms are important, "our", "branching", and "logic", so let's take them one at a time.

threadreaderapp.com

frontendtestfest.com

frontendtestfest.com