tests: Fix broken MMM1DGPU test

Fix regression introduced in 0f63a4a

testsuite/python/CMakeLists.txt

@@ -212,7 +212,8 @@ python_test(FILE features.py MAX_NUM_PROC 1)
 python_test(FILE galilei.py MAX_NUM_PROC 32)
 python_test(FILE linear_momentum.py MAX_NUM_PROC 4)
 python_test(FILE linear_momentum_lb.py MAX_NUM_PROC 2 LABELS gpu)
-python_test(FILE mmm1d.py MAX_NUM_PROC 2 LABELS gpu)
+python_test(FILE mmm1d.py MAX_NUM_PROC 2)
+python_test(FILE mmm1d_gpu.py MAX_NUM_PROC 1 LABELS gpu)
 python_test(FILE stokesian_dynamics.py MAX_NUM_PROC 2 LABELS long)
 python_test(FILE stokesian_thermostat.py MAX_NUM_PROC 2)
 python_test(FILE elc.py MAX_NUM_PROC 2)

testsuite/python/mmm1d.py

@@ -110,11 +110,6 @@ def test_bjerrum_length_change(self):
         self.test_with_analytical_result(prefactor=prefactor, accuracy=0.0017)
 
 
-@utx.skipIfMissingFeatures(["ELECTROSTATICS", "MMM1D_GPU"])
-class MMM1D_GPU_Test(ElectrostaticInteractionsTests, ut.TestCase):
-    from espressomd.electrostatics import MMM1D
-
-
 @utx.skipIfMissingFeatures(["ELECTROSTATICS"])
 class MMM1D_Test(ElectrostaticInteractionsTests, ut.TestCase):
     from espressomd.electrostatics import MMM1D

testsuite/python/mmm1d_gpu.py

@@ -0,0 +1,30 @@
+#
+# Copyright (C) 2013-2019 The ESPResSo project
+#
+# This file is part of ESPResSo.
+#
+# ESPResSo is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# ESPResSo is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+import unittest as ut
+import unittest_decorators as utx
+import mmm1d
+
+
+@utx.skipIfMissingFeatures(["ELECTROSTATICS", "MMM1D_GPU"])
+class MMM1D_GPU_Test(mmm1d.ElectrostaticInteractionsTests, ut.TestCase):
+    from espressomd.electrostatics import MMM1DGPU as MMM1D
+
+
+if __name__ == "__main__":
+    ut.main()