Testing articles

Articles covering testing practies.

Testing
August 17, 2024
Nullable type narrowing in tests
Non-trivial integration tests in TypeScript projects might require us to use functions that return Nullable types, especially when asserting side effects. This might force us to use less that ideal solutions such as type assertions or type-check ignoring comments. However, there is much better and elegant solution which we'll explore in detail.
Testing
August 09, 2024
Partial matching test assertions
This blog post explores two different approaches to describe partial test assertions: omitting insignificant data and picking only relevant data. Both approaches are useful, but they address different scenarios.
Testing
December 19, 2022
A decade of testing
This post describes all the tools and practices I currently use to cover automated functional testing for an entire web application: unit and integration testing, end-to-end system testing, and isolated UI components testing.
Testing
October 30, 2022
Reasons for writing tests
Since I'm a big fan of automated testing, I'll describe my personal reasons for writing tests, which took shape during the last decade, writing all kinds of tests with the majority of available frameworks and tools within the JavaScript ecosystem.
Testing
October 29, 2022
Excuses for not writing tests
In this post I'll describe the most popular excuses I've heard so far when asking others about the lack of automated tests in their code. As we'll see, most of them are fallacies or unfounded arguments.