Update python tests

jupyterlab/tests/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "@jupyterlab/python-tests",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {},
+  "devDependencies": {}
+}

jupyterlab/tests/test_labextensions.py

@@ -372,7 +372,8 @@ class TestInstallLabExtension(TestCase):
         assert 'mockextension' in manifest
         mod = manifest['mockextension']
         assert mod['name'] == 'mockextension'
-        assert 'jupyterlab/tests/mockextension/index.js' in mod['entry']
+        modname = '@jupyterlab/python-tests@0.1.0/mockextension/index.js'
+        assert modname in mod['entry']
         filename = 'mockextension.bundle.js'
         assert mod['files'][0] == filename
         assert mod['id'] == 0