Cover both density mass and EOS source in closure quadrature

tests/field/field_mfem.cpp

@@ -393,11 +393,11 @@ TEST_CASE(
     REQUIRE(densitySource.base_order.has_value());
 
     /*
-     * L2_2 value order 2
+     * Registered density value order
      * + geometry order 3
      * + dynamic coefficient order 4.
      */
-    CHECK(*densitySource.base_order == 9);
+    CHECK(*densitySource.base_order == field::Density::Scalar::familyOrder + 3 + 4);
 
     CHECK(densitySource.term == quadrature::Term::density_projection);
 
@@ -775,4 +775,4 @@ TEST_CASE(
     for (int index = 0; index < support.activeTrueDofMarker.Size(); ++index) {
         CHECK(support.activeTrueDofMarker[index] == 1);
     }
-}
+}