docs: unit tests

docs/abra/hack.md

@@ -20,6 +20,24 @@ Our [Drone CI configuration](https://git.coopcloud.tech/coop-cloud/abra/src/bran
 
 Please use the [conventional commit format](https://www.conventionalcommits.org/en/v1.0.0/) for your commits so we can automate our change log.
 
+## Unit tests
+
+### Run tests
+
+Run the entire suite.
+
+```
+make test
+```
+
+### Filter tests
+
+Run a specific test.
+
+```
+go test ./pkg/recipe -v -run TestGetVersionLabelLocalDoesNotUseTimeoutLabel
+```
+
 ## Integration tests
 
 ### Install dependencies