1#!/bin/sh
2# Unit tests for init.sh
3# Copyright (C) 2011-2020 Free Software Foundation, Inc.
4# This file is part of the GNUlib Library.
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: ${srcdir=.}
20. "$srcdir/init.sh"; path_prepend_ .
21
22fail=0
23
24test_compare()
25{
26  touch empty || fail=1
27  echo xyz > in || fail=1
28
29  compare /dev/null /dev/null >out 2>err || fail=1
30  test -s out && fail_ "out not empty: $(cat out)"
31  # "err" should be empty, too, but has "set -x" output when VERBOSE=yes
32  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
33
34  compare /dev/null empty >out 2>err || fail=1
35  test -s out && fail_ "out not empty: $(cat out)"
36  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
37
38  compare in in >out 2>err || fail=1
39  test -s out && fail_ "out not empty: $(cat out)"
40  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
41
42  compare /dev/null in >out 2>err && fail=1
43  cat <<\EOF > exp
44diff -u /dev/null in
45--- /dev/null	1970-01-01
46+++ in	1970-01-01
47+xyz
48EOF
49  compare exp out || fail=1
50  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
51
52  compare empty in >out 2>err && fail=1
53  # Compare against expected output only if compare is using diff -u.
54  if grep @ out >/dev/null; then
55    # Remove the TAB-date suffix on each --- and +++ line,
56    # for both the expected and the actual output files.
57    # Also remove the @@ line, since Solaris 5.10 and GNU diff formats differ:
58    # -@@ -0,0 +1 @@
59    # +@@ -1,0 +1,1 @@
60    # Also, remove space after leading '+', since AIX 7.1 diff outputs a space.
61    sed 's/	.*//;/^@@/d;s/^+ /+/' out > k && mv k out
62    cat <<\EOF > exp
63--- empty
64+++ in
65+xyz
66EOF
67    compare exp out || fail=1
68  fi
69  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
70}
71
72test_compare
73
74Exit $fail
75