chore: add unit tests to ci/cd (#109)

* chore: clean build dir before build

* chore: add unit tests to ci

* chore: dont error out if required env vars aren't set for tests

Author: elylucas

.github/workflows/check.yml

@@ -30,3 +30,6 @@ jobs:
 
       - name: Run linting
         run: npm run lint
+
+      - name: Run unit tests
+        run: npm run test:run