run notebook tests automatically if any notebooks have changed

Signed-off-by: Peter St. John <[email protected]>

.github/workflows/unit-tests.yml

@@ -113,13 +113,24 @@ jobs:
         with:
           path: ${{ github.run_id }}
 
+      - name: Check for notebook changes
+        id: check_notebooks
+        run: |
+          if git diff --quiet main HEAD -- '*.ipynb'; then
+            echo "::set-output name=changed::false"
+          else
+            echo "::set-output name=changed::true"
+          fi
+
       - name: Run tests
         env:
           BIONEMO_DATA_SOURCE: ngc
         run: ./ci/scripts/run_pytest.sh --no-nbval --skip-slow
 
       - name: Run notebook tests
-        if: ${{ contains(github.event.pull_request.labels.*.name, 'INCLUDE_NOTEBOOKS_TESTS') }}
+        if: |
+          ${{ steps.check_notebooks.outputs.changed == 'true' ||
+              contains(github.event.pull_request.labels.*.name, 'INCLUDE_NOTEBOOKS_TESTS') }}
         env:
           BIONEMO_DATA_SOURCE: ngc
         run: pytest --nbval-lax -p no:python docs/ sub-packages/
@@ -146,6 +157,5 @@ jobs:
     steps:
       - name: clean up image
         run: docker rmi nemoci.azurecr.io/bionemo:${{ github.run_id }}
-
 # TODO: exclude tests from base image; run tests from github workspace mounted in the image.
 # TODO: figure out way of cleaning up working directory (requires sudo or for us to fix file ownership from release container)