From a38b7ff623b09804cc6aa0f9d3f5752d7ccbe12e Mon Sep 17 00:00:00 2001
From: James Willis <james.s.willis@durham.ac.uk>
Date: Wed, 26 Jul 2017 17:06:01 +0100
Subject: [PATCH] Updated comments.

---
 tests/testPeriodicBC.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/testPeriodicBC.c b/tests/testPeriodicBC.c
index 495442efac..0f350f607b 100644
--- a/tests/testPeriodicBC.c
+++ b/tests/testPeriodicBC.c
@@ -517,7 +517,7 @@ int main(int argc, char *argv[]) {
 
   const int half_dim = (dim - 1) / 2;
 
-  /* Test the periodic boundary conditions for each of the 8 corners. */
+  /* Test the periodic boundary conditions for each of the 8 corners. Interact each corner with all of its 26 neighbours.*/
   test_boundary_conditions(cells, runner, 0, 0, 0, dim, swiftOutputFileName,
                            bruteForceOutputFileName);
   test_boundary_conditions(cells, runner, dim - 1, 0, 0, dim,
-- 
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