cleanup

Author: blink1073

.github/workflows/build.yml

@@ -27,11 +27,13 @@ jobs:
         run: |
           python -m pip install -U cookiecutter
 
-      - name: Test the extension
+      - name: Install the extension
         run: |
           cookiecutter . --config-file tests/testconfig.yaml --no-input
           pushd jupyter-widget-testwidgets
           python -m pip install --upgrade -v -e ".[test, examples, docs]"
+
+      - name: Test the extension
           yarn
           yarn run lint:check
 
@@ -49,9 +51,8 @@ jobs:
 
       - name: Validate extension usage
         run: |
-          # Validate nbextension (enable does not use exit code):
-          jupyter nbextension enable --py --sys-prefix jupyter_widget_testwidgets
-          python -c "from notebook.nbextensions import validate_nbextension; import sys; sys.exit(validate_nbextension('jupyter_widget_testwidgets/extension') or 0)"
+          # Validate nbextension
+          jupyter nbextension list 2>&1 | grep -ie "jupyter-widget-testwidgets.*OK"
 
           # Validate labextension
           pip install -U jupyterlab~=3.0 jupyter_packaging~=0.7