Update CI to run on changed notebooks only

Author: classiqdor

.github/workflows/run_tests.yml

@@ -16,5 +16,33 @@ jobs:
           python -m pip install -U -r requirements.txt
           python -m pip install -U -r requirements_tests.txt
 
+      - name: Get changed files - all
+        id: changed-files-all
+        uses: tj-actions/changed-files@v44
+      - name: Get changed files - ipynb
+        id: changed-files-ipynb
+        uses: tj-actions/changed-files@v44
+        with:
+          files: |
+            **.ipynb
+
+      - name: Set environment variables
+        run: |
+          if [ "${{ github.event_name }}" == 'pull_request' ]; then
+            echo "SHOULD_TEST_ALL_FILES=false" >> $GITHUB_ENV
+            echo "HAS_ANY_FILE_CHANGED=${{ steps.changed-files-all.outputs.any_changed }}" >> $GITHUB_ENV
+            echo "LIST_OF_FILE_CHANGED=${{ steps.changed-files-all.outputs.all_changed_files }}" >> $GITHUB_ENV
+            echo "HAS_ANY_IPYNB_CHANGED=${{ steps.changed-files-ipynb.outputs.any_changed }}" >> $GITHUB_ENV
+            echo "LIST_OF_IPYNB_CHANGED=${{ steps.changed-files-ipynb.outputs.all_changed_files }}" >> $GITHUB_ENV
+          elif [ "${{ github.event_name }}" == 'workflow_dispatch' ]; then
+            echo "SHOULD_TEST_ALL_FILES=true" >> $GITHUB_ENV
+            echo "HAS_ANY_FILE_CHANGED=None" >> $GITHUB_ENV
+            echo "LIST_OF_FILE_CHANGED=None" >> $GITHUB_ENV
+            echo "HAS_ANY_IPYNB_CHANGED=None" >> $GITHUB_ENV
+            echo "LIST_OF_IPYNB_CHANGED=None" >> $GITHUB_ENV
+          fi
+
       - name: "Run tests"
         run: python -m pytest tests
+        env:
+          JUPYTER_PLATFORM_DIRS: "1"