test: install realpath into the test images

diff --git a/test/test-functions b/test/test-functions
index 194cd682bb6985c54188ad3bddcb8f74b03b7410..ff0cc963ce16ef7eb87599fd6fc2fbf4c6b495c2 100644 (file)
--- a/test/test-functions
+++ b/test/test-functions
@@ -197,6 +197,7 @@ BASICTOOLS=(
     nproc
     pkill
     readlink
+    realpath
     rev
     rm
     rmdir