1 files changed, 13 insertions, 0 deletions
diff --git a/tests/init.sh b/tests/init.sh
index 37fc7b62e..added1760 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -93,6 +93,19 @@ skip_ () { warn_ "$ME_: skipped test: $@"; Exit 77; }
 fatal_ () { warn_ "$ME_: hard error: $@"; Exit 99; }
 framework_failure_ () { warn_ "$ME_: set-up failure: $@"; Exit 99; }
 
+# This is used to simplify checking of the return value
+# which is useful when ensuring a command fails as desired.
+# I.E. just doing `command ... &&fail=1` will not catch
+# a segfault in command for example.  With this helper you
+# instead check an explicit exit code like
+#   returns_ 1 command ... || fail
+returns_ () {
+  local exp_exit="$1"
+  shift
+  "$@"
+  test $? -eq $exp_exit
+}
+
 # Sanitize this shell to POSIX mode, if possible.
 DUALCASE=1; export DUALCASE
 if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then