🎉 Initial commit

tests/test_state.py

@@ -0,0 +1,11 @@
+"""State machine tests (SPECIFICATION §10.2). Transitions land in Phase 1."""
+
+from opcda_diagnozer.monitor.state import ConnectionState
+
+
+def test_connection_states_match_spec() -> None:
+    assert {s.name for s in ConnectionState} == {
+        "CONNECTING",
+        "CONNECTED",
+        "RECONNECT_WAIT",
+    }