daily-email: add 2023-07-18

TDD as a concept is simple, but TDD is difficult

src/content/daily-email/2023-07-18.md

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+---
+title: >
+  TDD as a concept is simple, but TDD is difficult
+pubDate: 2023-07-18
+permalink: >
+  archive/2023/07/18/tdd-as-a-concept-is-simple-but-tdd-is-difficult
+tags:
+  - automated-testing
+  - test-driven-development
+---
+
+Test-driven development as a concept is easy.
+
+Before you write any code, you write a failing test and then write enough code to get it to pass.
+
+But implementing test-driven development is harder.
+
+As well as overcoming the initial reluctance to write the tests first, it takes time to learn how to use it well.
+
+Code katas are great for practising TDD, but it can take time to progress from that to using it in a full application with more pieces.
+
+As with many things, practice and perseverance are key.