daily-email: add link

This commit is contained in:
Oliver Davies 2023-08-26 14:25:41 +01:00
parent d080945390
commit fe34040f13

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@ -9,7 +9,7 @@ tags:
- test-driven-development
---
If you have multiple implementations of a service, as I [mentioned in yesterday's email](), you need to ensure they all provide the same functionality.
If you have multiple implementations of a service, as I [mentioned in yesterday's email](https://www.oliverdavies.uk/archive/2023/08/23/dont-use-third-party-services-directly), you need to ensure they all provide the same functionality.
You need to be able to run the same tests against each implementation and have them pass.