Test new loadChunk syntax

Author: franzpoeschel

test/ParallelIOTest.cpp

@@ -491,9 +491,14 @@ void available_chunks_test(std::string const &file_ending)
 
         auto E_y = it0.meshes["E"]["y"];
         auto width = E_y.getExtent()[1];
-        auto first_row = E_y.loadChunk<int>({0, 0}, {1, width});
-        auto middle_rows = E_y.loadChunk<int>({1, 0}, {3, width});
-        auto last_row = E_y.loadChunk<int>({4, 0}, {1, width});
+        auto first_row =
+            E_y.prepareLoadStore().extent({1, width}).enqueueLoad<int>();
+        auto middle_rows = E_y.prepareLoadStore()
+                               .offset({1, 0})
+                               .extent({3, width})
+                               .enqueueLoad<int>();
+        auto last_row =
+            E_y.prepareLoadStore().offset({4, 0}).enqueueLoad<int>();
         read.flush();
 
         for (auto row : [&]() -> std::vector<std::shared_ptr<int> *> {