fix: Add another testcase

Author: untitaker

tests/test_client.py

@@ -241,3 +241,21 @@ def test_client_debug_option_disabled(with_client, sentry_init, caplog):
 
     Hub.current._capture_internal_exception((ValueError, ValueError("OK"), None))
     assert "OK" not in caplog.text
+
+
+def test_scope_initialized_before_client(sentry_init, capture_events):
+    """
+    This is a consequence of how configure_scope() works. We must
+    make `configure_scope()` a noop if no client is configured. Even
+    if the user later configures a client: We don't know that.
+    """
+    with configure_scope() as scope:
+        scope.set_tag("foo", 42)
+
+    sentry_init()
+
+    events = capture_events()
+    capture_message("hi")
+    event, = events
+
+    assert "tags" not in event