add testS

tests/test_nbserver.py

@@ -0,0 +1,28 @@
+import pytest
+
+
+def test_classic_notebook_templates(jp_serverapp):
+    classic_notebook_templates = [
+        "notebook.html",
+        "tree.html"
+    ]
+    # Get the server's template environment.
+    template_env = jp_serverapp.web_app.settings.get("jinja2_env")
+
+    for name in classic_notebook_templates:
+        template_env.get_template(name)
+
+
+async def test_classic_notebook_asset_URLS(jp_fetch):
+    classic_notebook_paths = [
+        # Some classic notebook asset paths
+        '/static/notebook/js/main.js',
+        '/static/services/contents.js',
+        # NBclassic asset paths work too.
+        '/static/notebook/notebook/js/main.js',
+        '/static/notebook/services/contents.js',
+    ]
+
+    for url_path in classic_notebook_paths:
+        r = await jp_fetch(url_path)
+        assert r.code == 200