1 files changed, 46 insertions, 0 deletions
diff --git a/tests/misc/seq-epipe.sh b/tests/misc/seq-epipe.sh
new file mode 100755
index 000000000..21e932293
--- /dev/null
+++ b/tests/misc/seq-epipe.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+# Test for proper detection of EPIPE with ignored SIGPIPE
+
+# Copyright (C) 2016 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_ seq
+
+# upon EPIPE with signals ignored, 'seq' should exit with an error.
+(trap '' PIPE;
+ timeout 10 sh -c '( (seq inf 2>err ; echo $?>code) | head -n1)'>/dev/null)
+
+# Exit-code must be 1, indicating 'write error'
+cat << \EOF > exp || framework_failure_
+1
+EOF
+if test -e code ; then
+  compare exp code || fail=1
+else
+  # 'exitcode' file was not created
+  warn_ "missing exit code file (seq failed to detect EPIPE?)"
+  fail=1
+fi
+
+# The error message must begin with "standard output:"
+# (but don't hard-code the strerror text)
+compare_dev_null_ /dev/null err
+if ! grep -qE '^seq: standard output: .+$' err ; then
+  warn_ "seq emitted incorrect error on EPIPE"
+  fail=1
+fi
+
+Exit $fail