From 0ba969553ac13c20370546cf52d1f30a972954b7 Mon Sep 17 00:00:00 2001
From: Peter Hill <peter.hill@york.ac.uk>
Date: Tue, 17 Feb 2026 15:28:08 +0000
Subject: [PATCH 1/2] tests: Set missing `mesh` members in `FakeMesh`

---
 tests/unit/fake_mesh.hxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/unit/fake_mesh.hxx b/tests/unit/fake_mesh.hxx
index 7d7326c149..4656ee0282 100644
--- a/tests/unit/fake_mesh.hxx
+++ b/tests/unit/fake_mesh.hxx
@@ -43,6 +43,9 @@ public:
     GlobalNx = nx;
     GlobalNy = ny;
     GlobalNz = nz;
+    GlobalNxNoBoundaries = nx - 2;
+    GlobalNyNoBoundaries = ny - 2;
+    GlobalNzNoBoundaries = nz;
     LocalNx = nx;
     LocalNy = ny;
     LocalNz = nz;

From 598b1d9c4cf311d40755ba166708cfe550f049b6 Mon Sep 17 00:00:00 2001
From: Peter Hill <peter.hill@york.ac.uk>
Date: Wed, 18 Feb 2026 09:31:58 +0000
Subject: [PATCH 2/2] Fix missing headers

---
 src/mesh/interpolation/interpolation_z.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesh/interpolation/interpolation_z.cxx b/src/mesh/interpolation/interpolation_z.cxx
index 8d39e6baa8..e743ec8555 100644
--- a/src/mesh/interpolation/interpolation_z.cxx
+++ b/src/mesh/interpolation/interpolation_z.cxx
@@ -20,8 +20,10 @@
  *
  **************************************************************************/
 
+#include <bout/globals.hxx>
 #include <bout/interpolation_z.hxx>
 #include <bout/mesh.hxx>
+#include <bout/region.hxx>
 
 ZInterpolation::ZInterpolation(int y_offset, Mesh* mesh, Region<Ind3D> region_in)
     : localmesh(mesh == nullptr ? bout::globals::mesh : mesh), region(region_in),