tests/test-githelp.t

--- a/tests/test-githelp.t	Thu May 23 11:14:32 2019 -0400
+++ b/tests/test-githelp.t	Thu May 30 16:38:42 2019 +0800
@@ -256,6 +256,10 @@
   $ hg githelp -- apply -p 5
   hg import --no-commit -p 5
 
+githelp for apply with prefix directory
+  $ hg githelp -- apply --directory=modules
+  hg import --no-commit --prefix modules
+
 git merge-base
   $ hg githelp -- git merge-base --is-ancestor
   ignoring unknown option --is-ancestor