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21b5147fd8
* Makefile.am (SUBDIRS): Remove 'tests'. (include): The '$(top_srcdir)/tests/local.mk' file. (check-root): Remove this convenience target, it's no longer needed now that the "real" check-root target once in 'tests/Makefile' will land in the top-level makefile. * configure.ac (AC_CONFIG_FILES): Remove 'tests/Makefile'. * tests/Makefile.am: Rename ... * tests/local.mk: ... like this, with a lot of adjustments. * tests/init.cfg: Move ... * init.cfg: ... here. This is necessary, for a limitation of the gnulib-provided 'tests/init.sh', which unconditionally look for 'init.cfg' in the $(srcdir) directory. * tests/*/*.sh: Adjust: expect init.sh to be in '$srcdir/tests', not in '$srcdir', and extend $PATH with './src', not with '../src'. * tests/Coreutils.pm: Adjust similarly. * tests/pr/pr-tests.pl ($pfx): Likewise.
61 lines
2.1 KiB
Bash
Executable File
61 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# Ensure that shuf randomizes its input.
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# Copyright (C) 2006-2012 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ shuf
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getlimits_
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seq 100 > in || framework_failure_
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shuf in >out || fail=1
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# Fail if the input is the same as the output.
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# This is a probabilistic test :-)
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# However, the odds of failure are very low: 1 in 100! (~ 1 in 10^158)
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compare in out > /dev/null && { fail=1; echo "not random?" 1>&2; }
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# Fail if the sorted output is not the same as the input.
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sort -n out > out1
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compare in out1 || { fail=1; echo "not a permutation" 1>&2; }
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# Exercise shuf's -i option.
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shuf -i 1-100 > out || fail=1
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compare in out > /dev/null && { fail=1; echo "not random?" 1>&2; }
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sort -n out > out1
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compare in out1 || { fail=1; echo "not a permutation" 1>&2; }
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# Exercise shuf's -e option.
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t=$(shuf -e a b c d e | sort | fmt)
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test "$t" = 'a b c d e' || { fail=1; echo "not a permutation" 1>&2; }
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# Before coreutils-6.3, this would infloop.
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# "seq 1860" produces 8193 (8K + 1) bytes of output.
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seq 1860 | shuf > /dev/null || fail=1
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# coreutils-6.12 and earlier would output a newline terminator, not \0.
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shuf --zero-terminated -i 1-1 > out || fail=1
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printf '1\0' > exp || framework_failure_
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cmp out exp || { fail=1; echo "missing NUL terminator?" 1>&2; }
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# Ensure shuf -n operates efficiently for small n. Before coreutils-8.13
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# this would try to allocate $SIZE_MAX * sizeof(size_t)
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timeout 10 shuf -i1-$SIZE_MAX -n2 >/dev/null ||
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{ fail=1; echo "couldn't get a small subset" >&2; }
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Exit $fail
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