tests/misc/echo.sh

   1 #!/bin/sh
   2 # basic tests for echo
   3
   4 # Copyright (C) 2018-2024 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
  19 prog='env echo'
  20
  21 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  22 print_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)
  27 printf '%s\n' . . . . . | tr . '\033' > exp
  28 $prog -n -e '\x1b\n\e\n\33\n\033\n\0033\n' > out || fail=1
  29 compare exp out || fail=1
  30
  31 # Incomplete hex escapes are output as is (unlike printf)
  32 printf '\\x\n' > exp
  33 $prog -n -e '\x\n' > out || fail=1
  34 compare 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
  39 cat <<\EOF > exp
  40 -- foo
  41 -- foo
  42 EOF
  43 compare exp out || fail=1
  44
  45 # Ensure \c stops processing
  46 $prog -e 'foo\n\cbar' > out || fail=1
  47 printf 'foo\n' > exp
  48 compare 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
  54 POSIXLY_CORRECT=1 $prog -n -E 'foo\n' > out || fail=1
  55 POSIXLY_CORRECT=1 $prog -nE 'foo' >> out || fail=1
  56 POSIXLY_CORRECT=1 $prog -E -n 'foo' >> out || fail=1
  57 POSIXLY_CORRECT=1 $prog --version >> out || fail=1
  58 cat <<\EOF > exp
  59 foo
  60 -nE foo
  61 -E -n foo
  62 --version
  63 EOF
  64 compare 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
  84 test '!' -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
  90 cat <<\EOF > exp
  91 -
  92 \
  93 0000000 07 08 1b 0c 0a 0d 09 0b
  94 0000010
  95 JKLMNOJKLMNO
  96 EOF
  97 compare exp out || fail=1
  98
  99 Exit $fail