From 96d99e3dd63b99adcada4016feffab4018d42d1d Mon Sep 17 00:00:00 2001
From: Evangelos Voyiatzis <evoyiatzis@gmail.com>
Date: Sun, 22 Sep 2024 15:33:46 +0200
Subject: [PATCH] unit test for extract() in bond-fene_expand.yaml

---
 unittest/force-styles/tests/bond-fene_expand.yaml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/unittest/force-styles/tests/bond-fene_expand.yaml b/unittest/force-styles/tests/bond-fene_expand.yaml
index fc859d477c..250f89af15 100644
--- a/unittest/force-styles/tests/bond-fene_expand.yaml
+++ b/unittest/force-styles/tests/bond-fene_expand.yaml
@@ -17,7 +17,12 @@ bond_coeff: ! |
   4 650 2.4 0.015 1.2 0.15
   5 450 2   0.018 1   0.09
 equilibrium: 5 1.5550000000000002 1.117 1.321 1.3139999999999998 1.06
-extract: ! ""
+extract: ! |
+  k 1
+  r0 1
+  epsilon 1
+  sigma 1
+  shift 1
 natoms: 29
 init_energy: 5926.020859124294
 init_stress: ! |-