From 95417ca711a75612da86a25acd20134efdbc0e67 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Sat, 17 Oct 2009 22:42:56 -0700
Subject: tests: add unbuffered tee(1)-like helper

Buffering enabled in tee(1) was making tests more
difficult to debug.
---
 t/GNUmakefile |  2 +-
 t/README      |  2 +-
 t/bin/utee    | 12 ++++++++++++
 3 files changed, 14 insertions(+), 2 deletions(-)
 create mode 100755 t/bin/utee

diff --git a/t/GNUmakefile b/t/GNUmakefile
index 934c179..7eac0d5 100644
--- a/t/GNUmakefile
+++ b/t/GNUmakefile
@@ -44,7 +44,7 @@ else
     SH_TEST_OPTS += -x
   endif
   quiet_pre = @echo '* $@';
-  quiet_post = 2>&1 | tee $(t_log); exit $$(cat $(t_code))
+  quiet_post = 2>&1 | ./bin/utee $(t_log); exit $$(cat $(t_code))
   pfx = $@
 endif
 
diff --git a/t/README b/t/README
index 4745b6d..a019dbf 100644
--- a/t/README
+++ b/t/README
@@ -14,7 +14,7 @@ comfortable writing integration tests with.
 * {GNU make}[http://www.gnu.org/software/make/]
 * {socat}[http://www.dest-unreach.org/socat/]
 * {curl}[http://curl.haxx.se/]
-* standard UNIX shell utilities (Bourne sh, awk, sed, grep, tee, ...)
+* standard UNIX shell utilities (Bourne sh, awk, sed, grep, ...)
 
 We do not use bashisms or any non-portable, non-POSIX constructs
 in our shell code.  We use the "pipefail" option if available and
diff --git a/t/bin/utee b/t/bin/utee
new file mode 100755
index 0000000..e48f307
--- /dev/null
+++ b/t/bin/utee
@@ -0,0 +1,12 @@
+#!/usr/bin/env ruby
+# tee(1) as distributed on most(all?) systems is buffered in luserspace
+# this only does unbuffered writes (with line-buffered input) to make
+# test output appear in real-time
+# -*- encoding: binary -*-
+$stdin.binmode
+$stdout.binmode
+fp = File.open(ARGV.shift, "wb")
+$stdin.each_line do |line|
+  fp.syswrite line
+  $stdout.syswrite line
+end
-- 
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