one small additional precaution

src/fsfw/pus/Service11TelecommandScheduling.tpp

@@ -575,11 +575,13 @@ inline ReturnValue_t Service11TelecommandScheduling<MAX_NUM_TCS>::getMapFilterFr
         return INVALID_TIME_WINDOW;
       }
       itBegin = telecommandMap.begin();
-      itEnd = telecommandMap.begin();
 
       while (itBegin->first < fromTimestamp && itBegin != telecommandMap.end()) {
         itBegin++;
       }
+
+      //start looking for end beginning at begin
+      itEnd = itBegin;
       while (itEnd->first <= toTimestamp && itEnd != telecommandMap.end()) {
         itEnd++;
       }

unittests/CMakeLists.txt

@@ -18,6 +18,7 @@ add_subdirectory(power)
 add_subdirectory(util)
 add_subdirectory(container)
 add_subdirectory(osal)
+add_subdirectory(pus)
 add_subdirectory(serialize)
 add_subdirectory(datapoollocal)
 add_subdirectory(storagemanager)

unittests/pus/CMakeLists.txt

@@ -0,0 +1,3 @@
+target_sources(${FSFW_TEST_TGT} PRIVATE
+    testService11.cpp
+)

unittests/pus/testService11.cpp

@@ -0,0 +1,14 @@
+#include <fsfw/pus/Service11TelecommandScheduling.h>
+
+#include <catch2/catch_test_macros.hpp>
+
+#include "objects/systemObjectList.h"
+#include "tmtc/apid.h"
+#include "tmtc/pusIds.h"
+
+TEST_CASE("PUS Service 11", "[pus-srvc11]") {
+  Service11TelecommandScheduling<13> pusService11(objects::PUS_SERVICE_11_TC_SCHEDULER,
+                                                  apid::DEFAULT_APID, pus::PUS_SERVICE_11, nullptr);
+
+  // TODO test something...
+}