1#!/bin/sh 2# basic tests for echo 3 4# Copyright (C) 2018-2023 Free Software Foundation, Inc. 5 6# This program is free software: you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation, either version 3 of the License, or 9# (at your option) any later version. 10 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15 16# You should have received a copy of the GNU General Public License 17# along with this program. If not, see <https://www.gnu.org/licenses/>. 18 19prog='env echo' 20 21. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src 22print_ver_ echo 23 24 25# Verify the methods of specifying "Escape": 26# Note 4 octal digits are allowed (unlike printf which uses up to 3) 27printf '%s\n' . . . . . | tr . '\033' > exp 28$prog -n -e '\x1b\n\e\n\33\n\033\n\0033\n' > out || fail=1 29compare exp out || fail=1 30 31# Incomplete hex escapes are output as is (unlike printf) 32printf '\\x\n' > exp 33$prog -n -e '\x\n' > out || fail=1 34compare exp out || fail=1 35 36# Always output -- (unlike printf) 37$prog -- 'foo' > out || fail=1 38$prog -n -e -- 'foo\n' >> out || fail=1 39cat <<\EOF > exp 40-- foo 41-- foo 42EOF 43compare exp out || fail=1 44 45# Ensure \c stops processing 46$prog -e 'foo\n\cbar' > out || fail=1 47printf 'foo\n' > exp 48compare exp out || fail=1 49 50# With POSIXLY_CORRECT: 51# only -n as the first (separate) option enables option processing 52# -E is ignored 53# escapes are processed by default 54POSIXLY_CORRECT=1 $prog -n -E 'foo\n' > out || fail=1 55POSIXLY_CORRECT=1 $prog -nE 'foo' >> out || fail=1 56POSIXLY_CORRECT=1 $prog -E -n 'foo' >> out || fail=1 57POSIXLY_CORRECT=1 $prog --version >> out || fail=1 58cat <<\EOF > exp 59foo 60-nE foo 61-E -n foo 62--version 63EOF 64compare exp out || fail=1 65 66# Further test coverage. 67# Output a literal '-' (on a line itself). 68$prog - > out || fail=1 69# Output a literal backslash '\', no newline. 70$prog -n -e '\\' >> out || fail=1 71# Output an empty line (merely to have a newline after the previous test). 72$prog >> out || fail=1 73# Test other characters escaped by a backslash: 74# \a hex 07 alert, bell 75# \b hex 08 backspace 76# \e hex 1b escape 77# \f hex 0c form feed 78# \n hex 0a new line 79# \r hex 0d carriage return 80# \t hex 09 horizontal tab 81# \v hex 0b vertical tab 82# Convert output, yet checking the exit status of $prog. 83{ $prog -n -e '\a\b\e\f\n\r\t\v' || touch fail; } | od -tx1 >> out || fail=1 84test '!' -f fail || fail=1 85# Output hex values which contain hexadecimal characters to test hextobin(). 86# Hex values 4a through 4f are ASCII "JKLMNO". 87$prog -n -e '\x4a\x4b\x4c\x4d\x4e\x4f\x4A\x4B\x4C\x4D\x4E\x4F' >> out || fail=1 88# Output another newline. 89$prog >> out || fail=1 90cat <<\EOF > exp 91- 92\ 930000000 07 08 1b 0c 0a 0d 09 0b 940000010 95JKLMNOJKLMNO 96EOF 97compare exp out || fail=1 98 99Exit $fail 100