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-rw-r--r--tests/local.mk1
-rwxr-xr-xtests/misc/yes.sh32
2 files changed, 33 insertions, 0 deletions
diff --git a/tests/local.mk b/tests/local.mk
index 9a5208082..56cba699a 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -402,6 +402,7 @@ all_tests = \
tests/misc/uniq.pl \
tests/misc/uniq-perf.sh \
tests/misc/xattr.sh \
+ tests/misc/yes.sh \
tests/tail-2/wait.sh \
tests/tail-2/retry.sh \
tests/tail-2/symlink.sh \
diff --git a/tests/misc/yes.sh b/tests/misc/yes.sh
new file mode 100755
index 000000000..4ed300a4f
--- /dev/null
+++ b/tests/misc/yes.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+# Validate yes buffer handling
+
+# Copyright (C) 2015 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ yes
+
+# Check various buffer sizes, with the most important
+# size being BUFSIZ used for the local buffer to yes(1).
+# Note a \n is added, so actual sizes required internally
+# are 1 more than the size used here.
+for size in 1 1999 4095 4096 8191 8192 16383 16384; do
+ printf "%${size}s\n" '' > out.1
+ yes "$(printf %${size}s '')" | head -n2 | uniq > out.2
+ compare out.1 out.2 || fail=1
+done
+
+Exit $fail