From: Doug Shi-Dong <doug.shidong@gmail.com>
Date: Sat, 21 Sep 2019 16:35:04 +0000 (-0400)
Subject: Fix the assertion of MappingFEField's Jacobian determinant.
X-Git-Tag: v9.2.0-rc1~1042^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F8828%2Fhead;p=dealii.git

Fix the assertion of MappingFEField's Jacobian determinant.

Also add update flag to tests/mapping/mapping_fe_field_01.cc to check this assertion.
---

diff --git a/source/fe/mapping_fe_field.cc b/source/fe/mapping_fe_field.cc
index dae76e0614..356f519d76 100644
--- a/source/fe/mapping_fe_field.cc
+++ b/source/fe/mapping_fe_field.cc
@@ -838,7 +838,8 @@ namespace internal
 
         if (update_flags & update_volume_elements)
           {
-            AssertDimension(data.covariant.size(), data.volume_elements.size());
+            AssertDimension(data.contravariant.size(),
+                            data.volume_elements.size());
             if (cell_similarity != CellSimilarity::translation)
               for (unsigned int point = 0; point < data.contravariant.size();
                    ++point)
diff --git a/tests/mappings/mapping_fe_field_01.cc b/tests/mappings/mapping_fe_field_01.cc
index 4e82d95c12..c9e1a80428 100644
--- a/tests/mappings/mapping_fe_field_01.cc
+++ b/tests/mappings/mapping_fe_field_01.cc
@@ -77,7 +77,8 @@ test(const unsigned int degree)
   FEValues<dim, spacedim> fe_values(map_fe,
                                     fe_sys,
                                     quadrature_formula,
-                                    update_values | update_JxW_values);
+                                    update_values | update_JxW_values |
+                                      update_volume_elements);
 
   typename DoFHandler<dim, spacedim>::active_cell_iterator cell =
                                                              dof_sys