Writing test driven apps with http4k

on YouTube ↗01h 13m

" summary

http4k is a Kotlin library that models servers and clients as the same function so tests run in-memory http handler tests at ~8ms instead of ~150ms over the network. Example builds: a routed app, an atomic Integer call-counter implemented as a Filter, JSON marshalling via JSON lenses, and a fake dictionary HTTP handler used for contract tests and failure injection. All pieces compose as handlers so tests stay fast, deterministic, and reusable across unit and integration contexts.

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" chapters (16)

1. 0:00Introduction
2. 3:52Overview
3. 8:43What is http4k
4. 11:08App overview
5. 12:02Prerecorded coding
6. 12:22Creating a test
7. 13:13Creating a request
8. 18:34Creating a second test
9. 21:31Crosscutting middleware
10. 22:22Filters
11. 24:22Call counter filter
12. 29:54Reuse test code
13. 37:11Testing the analyzer
14. 40:36Introducing the lens
15. 47:36Introducing the dictionary
16. 53:14Building a fake dictionary

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