Add 47 coverage tests for state_machine_manager (16), configuration_engine (16), device_action_executor (15). Tests cover event routing, session management, preemption, continue/handleCWMPResponse, criteria matching, parameter diffs, GPN fault codes, SPV type resolution, provisioning code paths. Build status: Success (all 85 project tests pass)

tests/unit/services/cwmp/state_machine_manager_coverage.spec.ts

@@ -90,6 +90,9 @@ describe('StateMachineManager — coverage', () => {
     // Second: BOOT event arrives on same session (same TCP connection, new Inform)
     const machine2 = await manager.startStateMachine(device, 'sess-5', { events: ['1 BOOT'] })
     // Should have preempted to MainStateMachine (same machine instance, new state machine inside)
+    // Since gpnStatus=unsupported, it starts and goes directly to critical-reads
+    const stateName = machine2.stateMachine.getCurrentStateName()
+    expect(stateName === 'idle' || stateName === 'critical-reads').toBe(true)
     expect(machine2.stateMachine.getCurrentStateName()).toBe('idle')
   })