[PATCH] tests: don't fail new split test if xz is not available

[Jim Meyering]

The Nixos/Hydra builder showed that the new split test
fails when xz is not available:

http://hydra.nixos.org/build/1079023/log/raw

  + case $i:$total_n_lines in
  + split -l2 '--filter=xz > $FILE.xz' in out-
  bash: xz: command not found
  split: with FILE=out-aa, exit 127 from command: xz > $FILE.xz
  + fail=1
  + xz -dc out-aa.xz
  ./split/filter: line 32: xz: command not found
  + fail=1

Sure, I could have made it use gzip or bzip2, or even sed, but ...

>From 3c8ff029d4475eb79f69c98420f93e93a42a25dc Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Sat, 7 May 2011 07:48:00 +0200
Subject: [PATCH] tests: don't fail the split --filter=CMD test if xz is not
 available

* tests/split/filter: Skip if xz is not installed.
---
 tests/split/filter |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/tests/split/filter b/tests/split/filter
index 88321c0..1a7b06a 100755
--- a/tests/split/filter
+++ b/tests/split/filter
@@ -18,6 +18,7 @@

 . "${srcdir=.}/init.sh"; path_prepend_ ../src
 print_ver_ split
+xz --version || skip_ "xz (better than gzip/bzip2) required"

 for total_n_lines in 5 3000 20000; do
   seq $total_n_lines > in || framework_failure_
--
1.7.5.1.299.g6e1e4