assert(timestamp.ok()) in capture constructor

src/capture/capture_base.cpp

@@ -20,6 +20,7 @@ CaptureBase::CaptureBase(const std::string& _type,
     capture_id_(++capture_id_count_),
     time_stamp_(_ts)
 {
+    assert(time_stamp_.ok() && "Creating a capture with an invalid timestamp!");
     if (_sensor_ptr)
     {
         if (_sensor_ptr->getP() != nullptr and _sensor_ptr->isStateBlockDynamic("P"))