Better error message when calling readIterations() too late

Author: franzpoeschel

src/ReadIterations.cpp

@@ -37,6 +37,13 @@ SeriesIterator::SeriesIterator(Series series) : m_series(std::move(series))
         *this = end();
         return;
     }
+    else if (
+        it->second.get().m_closed == internal::CloseStatus::ClosedInBackend)
+    {
+        throw error::WrongAPIUsage(
+            "Trying to call Series::readIterations() on a (partially) read "
+            "Series.");
+    }
     else
     {
         auto openIteration = [](Iteration &iteration) {

test/SerialIOTest.cpp

@@ -5645,8 +5645,7 @@ void append_mode(
             }
             REQUIRE(counter == 5);
             // Cannot do listSeries here because the Series is already drained
-            // @todo better error message if attempting this
-            // helper::listSeries( read );
+            REQUIRE_THROWS_AS(helper::listSeries(read), error::WrongAPIUsage);
         }
         else
         {