This site only hosts the English translated version note for this article.
The original article, written in Spanish and published on Software Crafters, covers a practical way to apply TDD in React with TypeScript, including thinking in use cases first and choosing tests according to the kind of feedback each layer provides.
If you want the full original piece, read it here:
The original Software Crafters reference is preserved in the links collection, even though imported external links are hidden from the main blog/feed listing once a hosted counterpart exists.