From 99ccde29a3221d8df1a9198201b42fda177ea736 Mon Sep 17 00:00:00 2001
From: Valentin Sulzer <valentinsulzer@hotmail.com>
Date: Mon, 3 May 2021 09:01:16 -0600
Subject: [PATCH] #1456 fix test

---
 .../test_constant_concentration.py                        | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tests/unit/test_models/test_submodels/test_electrolyte_diffusion/test_constant_concentration.py b/tests/unit/test_models/test_submodels/test_electrolyte_diffusion/test_constant_concentration.py
index 1d2c7898e6..877546e3f5 100644
--- a/tests/unit/test_models/test_submodels/test_electrolyte_diffusion/test_constant_concentration.py
+++ b/tests/unit/test_models/test_submodels/test_electrolyte_diffusion/test_constant_concentration.py
@@ -11,7 +11,13 @@ class TestConstantConcentration(unittest.TestCase):
     def test_public_functions(self):
         param = pybamm.LithiumIonParameters()
         a = pybamm.Scalar(0)
-        variables = {"Porosity": a, "Electrolyte concentration": a}
+        variables = {
+            "Porosity": a,
+            "Negative electrode porosity": a,
+            "Separator porosity": a,
+            "Positive electrode porosity": a,
+            "Electrolyte concentration": a,
+        }
         submodel = pybamm.electrolyte_diffusion.ConstantConcentration(param)
         std_tests = tests.StandardSubModelTests(submodel, variables)
         std_tests.test_all()