99 lines
2.9 KiB
Bash
Executable file
99 lines
2.9 KiB
Bash
Executable file
#!/bin/sh
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# basic tests for echo
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# Copyright (C) 2018-2025 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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prog='env echo'
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ echo
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# Verify the methods of specifying "Escape":
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# Note 4 octal digits are allowed (unlike printf which uses up to 3)
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printf '%s\n' . . . . . | tr . '\033' > exp
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$prog -n -e '\x1b\n\e\n\33\n\033\n\0033\n' > out || fail=1
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compare exp out || fail=1
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# Incomplete hex escapes are output as is (unlike printf)
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printf '\\x\n' > exp
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$prog -n -e '\x\n' > out || fail=1
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compare exp out || fail=1
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# Always output -- (unlike printf)
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$prog -- 'foo' > out || fail=1
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$prog -n -e -- 'foo\n' >> out || fail=1
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cat <<\EOF > exp
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-- foo
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-- foo
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EOF
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compare exp out || fail=1
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# Ensure \c stops processing
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$prog -e 'foo\n\cbar' > out || fail=1
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printf 'foo\n' > exp
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compare exp out || fail=1
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# With POSIXLY_CORRECT:
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# only -n as the first (separate) option enables option processing
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# -E is ignored
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# escapes are processed by default
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POSIXLY_CORRECT=1 $prog -n -E 'foo\n' > out || fail=1
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POSIXLY_CORRECT=1 $prog -nE 'foo' >> out || fail=1
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POSIXLY_CORRECT=1 $prog -E -n 'foo' >> out || fail=1
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POSIXLY_CORRECT=1 $prog --version >> out || fail=1
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cat <<\EOF > exp
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foo
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-nE foo
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-E -n foo
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--version
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EOF
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compare exp out || fail=1
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# Further test coverage.
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# Output a literal '-' (on a line itself).
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$prog - > out || fail=1
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# Output a literal backslash '\', no newline.
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$prog -n -e '\\' >> out || fail=1
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# Output an empty line (merely to have a newline after the previous test).
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$prog >> out || fail=1
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# Test other characters escaped by a backslash:
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# \a hex 07 alert, bell
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# \b hex 08 backspace
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# \e hex 1b escape
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# \f hex 0c form feed
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# \n hex 0a new line
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# \r hex 0d carriage return
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# \t hex 09 horizontal tab
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# \v hex 0b vertical tab
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# Convert output, yet checking the exit status of $prog.
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{ $prog -n -e '\a\b\e\f\n\r\t\v' || touch fail; } | od -tx1 >> out || fail=1
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test '!' -f fail || fail=1
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# Output hex values which contain hexadecimal characters to test hextobin().
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# Hex values 4a through 4f are ASCII "JKLMNO".
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$prog -n -e '\x4a\x4b\x4c\x4d\x4e\x4f\x4A\x4B\x4C\x4D\x4E\x4F' >> out || fail=1
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# Output another newline.
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$prog >> out || fail=1
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cat <<\EOF > exp
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-
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\
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0000000 07 08 1b 0c 0a 0d 09 0b
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0000010
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JKLMNOJKLMNO
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EOF
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compare exp out || fail=1
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Exit $fail
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