daily-email: add 2023-08-18

Types vs tests

src/content/daily-email/2023-08-18.md

@@ -0,0 +1,28 @@
+---
+title: >
+  Types vs tests
+pubDate: 2023-08-18
+permalink: >
+  archive/2023/08/18/types-vs-tests
+tags:
+  - automated-testing
+  - test-driven-development
+  - static-analysis
+---
+
+Today, I saw a Twitter poll - "Poll: Imagine your team has to build a project with either types or tests. You can't have both.".
+
+The results were:
+
+- Types - 50.9%
+- Tests - 49.1%
+
+I was surprised by this.
+
+If I can't add type declarations (type hints) or return types, I can still write tests to check what happens when different types are used.
+
+I can also perform checks and throw errors or Exceptions if something isn't what I'd expect.
+
+## Here's the thing
+
+I use types heavily, but I'd be more confident that my application would work if I had tests and that's the main objective when writing code for myself or clients and for my clients' customers.