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89b9115da6
* src/fold.c (fold_file): Continue the loop when we have buffered bytes but nothing left to read from the file. (adjust_column): Don't assume that the character is printable. * tests/fold/fold-characters.sh: Add a new test case. (bad_unicode): New function.
101 lines
3.6 KiB
Bash
Executable File
101 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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# Test fold --characters.
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# Copyright (C) 2025 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 <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ fold printf
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getlimits_
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test "$LOCALE_FR_UTF8" != none || skip_ "French UTF-8 locale not available"
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LC_ALL=$LOCALE_FR_UTF8
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export LC_ALL
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# The string "뉐뉐뉐" is 3 characters, but occupies 6 columns.
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env printf '\uB250\uB250\uB250\n' > input1 || framework_failure_
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env printf '\uB250\uB250\n\uB250\n' > column-exp1 || framework_failure_
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fold -w 5 input1 > column-out1 || fail=1
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compare column-exp1 column-out1 || fail=1
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# Should be the same as the input.
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fold --characters -w 5 input1 > characters-out1 || fail=1
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compare input1 characters-out1 || fail=1
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# Test with 50 2 column wide characters.
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for i in $(seq 50); do
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env printf '\uFF1A' >> input2 || framework_failure_
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env printf '\uFF1A' >> column-exp2 || framework_failure_
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env printf '\uFF1A' >> character-exp2 || framework_failure_
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if test $(($i % 5)) -eq 0; then
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env printf '\n' >> column-exp2 || framework_failure_
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fi
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if test $(($i % 10)) -eq 0; then
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env printf '\n' >> character-exp2 || framework_failure_
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fi
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done
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env printf '\n' >> input2 || framework_failure_
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# 5 characters per line.
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fold -w 10 input2 > column-out2 || fail=1
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compare column-exp2 column-out2 || fail=1
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# 10 characters per line.
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fold --characters -w 10 input2 > character-out2 || fail=1
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compare character-exp2 character-out2 || fail=1
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# Test a Unicode character on the edge of the input buffer.
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# Keep in sync with IO_BUFSIZE - 1.
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IO_BUFSIZE_MINUS_1=$(($IO_BUFSIZE - 1))
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test $IO_BUFSIZE_MINUS_1 -gt 0 || framework_failure_
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yes a | head -n $IO_BUFSIZE_MINUS_1 | tr -d '\n' > input3 || framework_failure_
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env printf '\uB250' >> input3 || framework_failure_
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yes a | head -n 100 | tr -d '\n' >> input3 || framework_failure_
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env printf '\n' >> input3 || framework_failure_
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yes a | head -n 80 | tr -d '\n' > exp3 || framework_failure_
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env printf '\n' >> exp3 || framework_failure_
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yes a | head -n 63 | tr -d '\n' >> exp3 || framework_failure_
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env printf '\uB250' >> exp3 || framework_failure_
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yes a | head -n 16 | tr -d '\n' >> exp3 || framework_failure_
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env printf '\n' >> exp3 || framework_failure_
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yes a | head -n 80 | tr -d '\n' >> exp3 || framework_failure_
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env printf '\naaaa\n' >> exp3 || framework_failure_
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fold --characters input3 | tail -n 4 > out3 || fail=1
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compare exp3 out3 || fail=1
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# Sequence derived from <https://datatracker.ietf.org/doc/rfc9839>.
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bad_unicode ()
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{
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# invalid UTF8|unpaired surrogate|NUL|C1 control|noncharacter
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env printf '\xC3|\xED\xBA\xAD|\u0000|\u0089|\xED\xA6\xBF\xED\xBF\xBF\n'
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}
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bad_unicode > /dev/null || framework_failure_
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test $({ bad_unicode | fold; bad_unicode; } | uniq | wc -l) = 1 || fail=1
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# Check bad character at EOF
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test $(env printf '\xC3' | fold | wc -c) = 1 || fail=1
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# Ensure bounded memory operation
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vm=$(get_min_ulimit_v_ fold /dev/null) && {
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yes | tr -d '\n' | (ulimit -v $(($vm+8000)) && fold 2>err) | head || fail=1
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compare /dev/null err || fail=1
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}
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Exit $fail
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