Добавлены тесты для критических фиксов (lock_check, UniqueViolation, escName, idx_one_running)

tests/test_db_scenario_defs.py

@@ -0,0 +1,32 @@
+import db.scenario_defs as defs
+
+
+def test_lock_check_returns_none_when_db_connection_missing(monkeypatch):
+    monkeypatch.setattr(defs, "get_conn", lambda: None)
+
+    result = defs.lock_check("cid", "test")
+
+    assert result is None
+
+
+def test_lock_check_returns_none_on_db_exception(monkeypatch):
+    class BrokenCursor:
+        def execute(self, *args, **kwargs):
+            raise RuntimeError("db broken")
+
+        def close(self):
+            return None
+
+    class BrokenConn:
+        def cursor(self):
+            return BrokenCursor()
+
+    put_calls = {"n": 0}
+
+    monkeypatch.setattr(defs, "get_conn", lambda: BrokenConn())
+    monkeypatch.setattr(defs, "put_conn", lambda _c: put_calls.__setitem__("n", put_calls["n"] + 1))
+
+    result = defs.lock_check("cid", "test")
+
+    assert result is None
+    assert put_calls["n"] == 1