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| author | Jim Meyering <meyering@redhat.com> | 2008-11-21 23:12:17 +0100 |
|---|---|---|
| committer | Jim Meyering <meyering@redhat.com> | 2008-11-22 10:31:08 +0100 |
| commit | a5e53ecc2cf8404760094631a772d4ce255bdcac (patch) | |
| tree | d506765efafb9bad7ef69276d2a32cb3895d1005 | |
| parent | d5ab05998ca068b9a2e217285b15318ad2e5bdb8 (diff) | |
| download | coreutils-a5e53ecc2cf8404760094631a772d4ce255bdcac.tar.xz | |
tests: dd: add a test for the required behavior
* tests/dd/reblock: New file. Test for the required functionality.
Based on an example and discussion from this thread:
http://lists.gnu.org/archive/html/bug-coreutils/2008-11/msg00153.html
* tests/Makefile.am (TESTS): Add dd/reblock.
| -rw-r--r-- | tests/Makefile.am | 1 | ||||
| -rwxr-xr-x | tests/dd/reblock | 51 |
2 files changed, 52 insertions, 0 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am index f264bd0c6..8c768bb42 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -283,6 +283,7 @@ TESTS = \ cp/thru-dangling \ dd/misc \ dd/not-rewound \ + dd/reblock \ dd/skip-seek \ dd/skip-seek2 \ dd/unblock-sync \ diff --git a/tests/dd/reblock b/tests/dd/reblock new file mode 100755 index 000000000..542529a71 --- /dev/null +++ b/tests/dd/reblock @@ -0,0 +1,51 @@ +#!/bin/sh +# test dd reblocking vs. bs= + +# Copyright (C) 2008 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 + dd --version +fi + +. $srcdir/lang-default +. $srcdir/test-lib.sh + +cat <<\EOF > exp-reblock || framework_failure +0+2 records in +1+1 records out +4 bytes (4 B) copied +EOF + +cat <<\EOF > exp-no-reblock || framework_failure +0+2 records in +0+2 records out +4 bytes (4 B) copied +EOF + +fail=0 + +# ensure that dd reblocks when bs= is not specified +(echo x; sleep .1; echo y) | dd ibs=3 obs=3 > out 2> err || fail=1 +sed 's/,.*//' err > k && mv k err +compare err exp-reblock || fail=1 + +# Demonstrate that bs=N supersedes even following ibs= and obs= settings. +(echo x; sleep .1; echo y) | dd bs=3 ibs=1 obs=1 > out 2> err || fail=1 +sed 's/,.*//' err > k && mv k err +compare err exp-no-reblock || fail=1 + +Exit $fail |