Allow to start timer from a given time point

src/utils/Timer.hpp

@@ -107,6 +107,10 @@ class Timer
       m_status{Status::running}
   {}
 
+  Timer(const std::chrono::time_point<std::chrono::high_resolution_clock>& start)
+    : m_start{start}, m_elapsed_sum{std::chrono::duration<double>::zero()}, m_status{Status::running}
+  {}
+
   ~Timer() = default;
 };
 

tests/test_Timer.cpp

@@ -59,6 +59,11 @@ TEST_CASE("Timer", "[utils]")
     t2.reset();
     REQUIRE(t2.status() == Timer::Status::paused);
     REQUIRE(t2.seconds() == 0);
+
+    using namespace std::chrono_literals;
+    Timer t3{std::chrono::high_resolution_clock::now() - 24h};
+    REQUIRE(t3.status() == Timer::Status::running);
+    REQUIRE(t3.seconds() > 24 * 3600);
   }
 
   SECTION("stop/start")