From d50e63888d0d6809e9029a1ebc1769d58ea8211a Mon Sep 17 00:00:00 2001
From: Christoph Lehmann <christoph.lehmann@ufz.de>
Date: Fri, 8 Sep 2023 13:14:02 +0200
Subject: [PATCH] [T/TRM] Added a minimal test for passing volumetric strain.

---
 ...othermal_drainage_imbibition_extended_mfront_model.prj | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Tests/Data/ThermoRichardsMechanics/MFront/ThermoPoroElasticity/uniaxial_isothermal_drainage_imbibition_extended_mfront_model.prj b/Tests/Data/ThermoRichardsMechanics/MFront/ThermoPoroElasticity/uniaxial_isothermal_drainage_imbibition_extended_mfront_model.prj
index 4687b388bc5..ce1d13ba14c 100644
--- a/Tests/Data/ThermoRichardsMechanics/MFront/ThermoPoroElasticity/uniaxial_isothermal_drainage_imbibition_extended_mfront_model.prj
+++ b/Tests/Data/ThermoRichardsMechanics/MFront/ThermoPoroElasticity/uniaxial_isothermal_drainage_imbibition_extended_mfront_model.prj
@@ -129,8 +129,12 @@
                 </property>
                 <property>
                     <name>permeability</name>
-                    <type>Constant</type>
-                    <value>2e-20</value>
+                    <type>Function</type>
+                    <value>
+                        <!-- If volumetric strain is not set by OGS, it will be NaN.
+                             Hence, the entire expression will be NaN and OGS will fail. -->
+                        <expression>2e-20 + volumetric_strain - volumetric_strain</expression>
+                    </value>
                 </property>
                 <property>
                     <name>porosity</name>
-- 
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