tests: shuf: check that write errors are promptly diagnosed

* tests/misc/write-errors.sh: Add a shuf invocation that would run
forever if write errors weren't diagnosed.

diff --git a/tests/misc/write-errors.sh b/tests/misc/write-errors.sh
index 20ba0ab1c35180ad6ad1cf30524fd486b7cb6531..53111417aacf5fb8cd5aff6bd1fc69174bb32840 100755 (executable)
--- a/tests/misc/write-errors.sh
+++ b/tests/misc/write-errors.sh
@@ -56,6 +56,7 @@ paste /dev/zero
 pr /dev/zero
 pr --version; yes 1 | pr
 seq inf
+shuf -i 0-1 -r
 tail -n+1 -z /dev/zero
 tee < /dev/zero
 tr . . < /dev/zero