Install servicelayer before running tests

Tests in `test_extensions.py` rely on `servicelayer` being installed as they ultimately read information from the egg info that is created during installation.

This is basically equivalent to the previous setup which executed `pip install -e .` outside of the container. As the entire directory is mounted into the container, the egg info subsequently was also available inside of the container. While that worked I found the fact that installing something outside of the container could make the tests fail or pass quite confusing. This should be a little more explicit.

.github/workflows/build.yml

@@ -21,8 +21,8 @@ jobs:
     - name: Run the linter
       run: make lint
     - name: Run the tests
-      run: |
-        make test
+      # Some tests rely on the package being installed
+      run: docker compose run --rm shell bash -c "make install && make tests"
     - name: Build a distribution
       run: |
         python setup.py sdist bdist_wheel

Makefile

@@ -15,7 +15,7 @@ dev:
 	python3 -m pip install -q -r requirements-dev.txt
 
 test:
-	docker-compose run --rm shell pytest --cov=servicelayer
+	pytest --cov=servicelayer
 
 lint:
 	ruff check .

tests/test_extensions.py

@@ -5,6 +5,8 @@
 
 class ExtensionTest(TestCase):
     def test_extensions(self):
+        # This relies on the servicelayer package being installed as `get_extensions`
+        # ultimately reads entrypoints from the egg info
         exts = get_extensions("servicelayer.test")
         assert len(exts), exts
         assert get_extensions in exts, exts