From 1644e589050ddfce4bbd5ebbe10a4e041499e386 Mon Sep 17 00:00:00 2001
From: Pádraig Brady <P@draigBrady.com>
Date: Wed, 11 Mar 2009 11:39:33 +0000
Subject: cat: Fix immediate output of processed data

Introduced by commit 790892db, 2006-06-08 "Ensure that cat works ...".
* NEWS: Mention the bugfix.
* src/cat.c (cat): Fix the typo which stopped the writing
of processed data before a blocking read() is done.
* tests/misc/cat-buf: Add to ensure processed data is not buffered.
* tests/Makefile.am: Reference the new test.
---
 tests/misc/cat-buf | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100755 tests/misc/cat-buf

(limited to 'tests/misc/cat-buf')

diff --git a/tests/misc/cat-buf b/tests/misc/cat-buf
new file mode 100755
index 000000000..fb9ae881e
--- /dev/null
+++ b/tests/misc/cat-buf
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Ensure that cat outputs processed data immediately.
+
+# Copyright (C) 2009 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/>.
+
+if test "$VERBOSE" = yes; then
+  set -x
+  cat --version
+fi
+
+. $srcdir/test-lib.sh
+
+# Use a fifo rather than a pipe in the tests below
+# so that the producer (cat) will wait until the
+# consumer (dd) opens the fifo therefore increasing
+# the chance that dd will read the data from each
+# write separately.
+mkfifo fifo || framework_failure
+
+echo '1' > exp
+
+dd count=1 if=fifo > out 2> err&
+(echo '1'; sleep .2; echo '2') | cat -v > fifo
+wait #for dd to complete
+
+compare out exp || fail=1
+
+Exit $fail
-- 
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