[verified] add user subset reset scope

tests/test_reset_environment_user_subset.py

@@ -0,0 +1,51 @@
+from run.initialization import reset_environment
+
+
+def test_reset_user_subset_scope_only_runs_user_subset_cleanup(monkeypatch):
+    calls = []
+
+    monkeypatch.setattr(
+        reset_environment,
+        "_sb_headers",
+        lambda: ("http://192.168.0.94:8000", {"Authorization": "Bearer redacted"}),
+    )
+    monkeypatch.setattr(
+        reset_environment,
+        "_assert_reset_allowed",
+        lambda url, scope: calls.append(("guard", url, scope)),
+    )
+    monkeypatch.setattr(
+        reset_environment,
+        "_clear_user_subset_files",
+        lambda: {"files_rows_deleted": 2, "storage_objects_removed": 2, "errors": []},
+    )
+
+    def fail_if_called(*_args, **_kwargs):
+        raise AssertionError("reset(scope='user-subset') must not clear unrelated tables or databases")
+
+    monkeypatch.setattr(reset_environment, "_clear_tables", fail_if_called)
+    monkeypatch.setattr(reset_environment, "_neo4j_drop_all_non_system", fail_if_called)
+    monkeypatch.setattr(reset_environment, "_clear_exam_storage", fail_if_called)
+
+    result = reset_environment.reset(scope="user-subset")
+
+    assert calls == [("guard", "http://192.168.0.94:8000", "user-subset")]
+    assert result == {
+        "scope": "user-subset",
+        "user_subset": {"files_rows_deleted": 2, "storage_objects_removed": 2, "errors": []},
+    }
+
+
+def test_reset_accepts_case_insensitive_user_subset_scope(monkeypatch):
+    monkeypatch.setattr(reset_environment, "_sb_headers", lambda: ("http://192.168.0.94:8000", {}))
+    monkeypatch.setattr(reset_environment, "_assert_reset_allowed", lambda *_args, **_kwargs: None)
+    monkeypatch.setattr(
+        reset_environment,
+        "_clear_user_subset_files",
+        lambda: {"files_rows_deleted": 0, "storage_objects_removed": 0, "errors": []},
+    )
+
+    assert reset_environment.reset(scope="USER-SUBSET") == {
+        "scope": "user-subset",
+        "user_subset": {"files_rows_deleted": 0, "storage_objects_removed": 0, "errors": []},
+    }