From e813e2d30ae8983c03e1c0e11d04252903e6dd86 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Wed, 9 Sep 2020 22:12:47 -0400
Subject: [PATCH] add minimal unit test for lammps_get_mpi_comm() API

---
 unittest/c-library/test_library_properties.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/unittest/c-library/test_library_properties.cpp b/unittest/c-library/test_library_properties.cpp
index 87b4d54f86..5e8c410cce 100644
--- a/unittest/c-library/test_library_properties.cpp
+++ b/unittest/c-library/test_library_properties.cpp
@@ -41,5 +41,13 @@ protected:
     }
 };
 
+TEST_F(LAMMPS_properties, get_mpi_comm) {
+    int f_comm = lammps_get_mpi_comm(lmp);
+    if (lammps_config_has_mpi_support())
+        EXPECT_GE(f_comm,0);
+    else
+        EXPECT_EQ(f_comm,-1);
+};
+
 TEST_F(LAMMPS_properties, box) {
 };