Test/user (#5139)

* Add some tests about user management.

* Add tests about user roles.

* Format.

* Fix tck fixture name.

* Fix step name.

* Change step name.

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Co-authored-by: Sophie <84560950+Sophie-Xie@users.noreply.github.com>

tests/tck/conftest.py

@@ -980,3 +980,19 @@ def switch_to_new_session(conn_pool, user, password, class_fixture_variables, ex
     sess = conn_pool.get_session(user, password)
     class_fixture_variables["sessions"].append(sess)
     exec_ctx["current_session"] = sess
+
+@when(parse('verify login with user "{user}"'))
+def login_without_password(conn_pool, user):
+    sess = None
+    try:
+        sess = conn_pool.get_session(user, '')
+    except Exception as e:
+        assert e
+
+@when(parse('verify login with user "{user}" and password "{password}"'))
+def login_with_password(conn_pool, user, password):
+    sess = None
+    try:
+        sess = conn_pool.get_session(user, password)
+    except Exception as e:
+        assert e