#! /bin/sh
# Copyright (C) 2011-2013 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# TAP support:
#  - missing, unreadable, or not-executable test scripts cause proper
#    error reports

. test-init.sh

fetch_tap_driver

plan_ 6

cat >> configure.ac <<END
AC_OUTPUT
END

cat > Makefile.am << 'END'
TEST_LOG_DRIVER = $(srcdir)/tap-driver
TESTS = none.test noread.test noexec.test
none.test:
END

cat > noexec.test <<'END'
#!/bin/sh
echo 1..1
echo ok 1
END

cp noexec.test noread.test
chmod a-r noread.test

$ACLOCAL
$AUTOCONF
$AUTOMAKE

./configure

command_ok_ '"make check" returns non-zero exit status' \
            run_make -O -e FAIL check

# FIXME: maybe grep for stricter error messages in the next checks?

command_ok_ "non-existent test is reported" \
            grep '^ERROR: none\.test' stdout

desc="non-executable test is reported"
# Redirect output to avoid confusing automake's testsuite own TAP driver.
if ./noexec.test >/dev/null; then
  skip_ -r "any file is executable" "$desc"
else
  command_ok_ "$desc" -- grep '^ERROR: noexec\.test' stdout
fi

desc="non-readable test is reported"
if test -r noread.test; then
  skip_ -r "any file is readable" "$desc"
else
  command_ok_ "$desc" -- grep '^ERROR: noread\.test' stdout
fi

# Check that no spurious test result is reported.  This is lower-priority
# (and in fact the check currently fails for our awk-based driver).
directive=
if test $am_tap_implementation = shell; then
  directive=TODO
else
  # Older versions of IPC::Open3 (e.g., version 1.05 on perl 5.12.4 or
  # version 1.0103 on perl 5.6.2) fail to properly trap errors in exec(2)
  # calls in the child process; hence, the TAP driver cannot be properly
  # informed of such error.
  if $PERL -w -e '
    use IPC::Open3 qw/open3/;
    $@ = "";
    eval { open3(*STDIN, *STDOUT, *STDERR, "am--no-such-command") };
    $@ =~ m/\bopen3:.*am--no-such-command/
      or die "Bad \$@ value: \"$@\"\n";
  '; then
    : # OK. IPC::Open3 should be good enough.
  else
    for s in '"missing plan" message' 'results'; do
      skip_ -r "IPC::Open3 not good enough" "no spurious $s"
    done
    exit 0
  fi
fi

command_ok_ 'no spurious "missing plan" message' \
    -D "$directive" -- not grep 'missing.* plan' stdout
command_ok_ 'no spurious results' \
  -D "$directive" -r 'still get "missing plan"' \
  count_test_results total=3 pass=0 fail=0 xpass=0 xfail=0 skip=0 error=3

: