tests: do not use system hg if it does not have "files" command
Ancient hg does not have "hg files" so test-check-*.t will fail with
"unknown command 'files'":
$ hg files
hg: unknown command 'files'
$ hg --version
Mercurial Distributed SCM (version 2.6.2)
Test "hg files" and give up using syshg if it does not have "files" command.
--- a/tests/helpers-testrepo.sh Wed Jun 28 10:50:37 2017 -0700
+++ b/tests/helpers-testrepo.sh Wed Jun 28 13:45:51 2017 -0700
@@ -25,3 +25,16 @@
HGPLAIN=1
export HGPLAIN
}
+
+# Most test-check-* sourcing this file run "hg files", which is not available
+# in ancient versions of hg. So we double check if "syshg files" works and
+# fallback to hg bundled in the repo.
+syshg files -h >/dev/null 2>/dev/null
+if [ $? -ne 0 ]; then
+ syshg() {
+ hg "$@"
+ }
+ syshgenv() {
+ :
+ }
+fi