diff --git a/tests/test_observe.py b/tests/test_observe.py
index 2fca409..485931e 100644
--- a/tests/test_observe.py
+++ b/tests/test_observe.py
@@ -19,7 +19,12 @@ def test_observe_configured_requires_switch_and_creds(monkeypatch):
     monkeypatch.setattr(settings, "OBSERVE_PASSWORD", "")
     assert settings.observe_configured is False
 
-    # 开关关 → False(即便凭证齐全)
+    # 缺用户名 → False
     monkeypatch.setattr(settings, "OBSERVE_PASSWORD", "p")
+    monkeypatch.setattr(settings, "OBSERVE_USER", "")
+    assert settings.observe_configured is False
+
+    # 开关关 → False(即便凭证齐全)
+    monkeypatch.setattr(settings, "OBSERVE_USER", "u")
     monkeypatch.setattr(settings, "OBSERVE_ENABLED", False)
     assert settings.observe_configured is False