Merge pull request #9782 from afshin/mimerender-test

Fix mimerender test example and test in CI

jupyterlab/tests/mock_packages/mimeextension/index.js

@@ -13,6 +13,7 @@ var factory = {
 };
 
 module.exports = {
+  id: '@jupyterlab/mock-mime-extension:plugin',
   mimeType: 'text/plain',
   rendererFactory: factory,
   widgetFactoryOptions: {

scripts/ci_script.sh

@@ -180,8 +180,11 @@ if [[ $GROUP == usage ]]; then
     jupyter labextension unlink  @jupyterlab/mock-mime-extension --no-build --debug
 
     # Test with a source package install
-    jupyter labextension install mimeextension  --no-build --debug
+    jupyter labextension install mimeextension --debug
     jupyter labextension list --debug
+    jupyter labextension list 1>labextensions 2>&1
+    cat labextensions | grep "@jupyterlab/mock-mime-extension.*enabled.*OK"
+    python -m jupyterlab.browser_check
     jupyter labextension disable @jupyterlab/mock-mime-extension --debug
     jupyter labextension enable @jupyterlab/mock-mime-extension --debug
     jupyter labextension uninstall @jupyterlab/mock-mime-extension --no-build --debug