WHEN TO START WRITING TESTS (REDDIT POST)

Summary from the TLDR Web Dev newsletter

An engineering team built a product that grew fast without writing any tests. However, the product is now starting to have flakiness and bugs from its lack of tests, so a Reddit user asked when the right time to start writing tests is. Commenters respond with advice, such as writing unit tests to make sure functionality doesn’t change over time. They advise selling the idea of taking time to write tests to management by using a perspective of risk.