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#!/bin/sh

: ${PERL=perl}
: ${srcdir=.}

$PERL -e 1 > /dev/null 2>&1 || {
  echo 1>&2 "$0: configure didn't find a usable version of Perl," \
    "so can't run this test"
  exit 77
}

exec $PERL -w -I$srcdir/.. -MCoreutils -- - <<\EOF
require 5.003;
use strict;

(my $ME = $0) =~ s|.*/||;

# Turn off localisation of executable's ouput.
@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;

# Export TZ=UTC0 so that zone-dependent strings match.
$ENV{TZ} = 'UTC0';

my @Tests =
    (
     # This would infloop (or appear to) prior to coreutils-4.5.5,
     # due to a bug in strftime.c.
     ['wide-fmt', "-d '1999-06-01'", '+%3004Y', {OUT=>'0' x 3000 . '1999'}],

     # Ensure that we can parse MONTHNAME-DAY-YEAR.
     ['moname-d-y', '--iso -d May-23-2003', {OUT=>'2003-05-23'}],

     ['epoch', '--iso=sec -d @31536000',
      {OUT=>'1971-01-01T00:00:00+0000'}],

     ['ns-10', '--iso=ns', '-d "1969-12-31 13:00:00.00000001-1100"',
      {OUT=>'1970-01-01T00:00:00,000000010+0000'}],

     ['ns-max32', '--iso=ns', '-d "2038-01-19 03:14:07.999999999"',
      {OUT=>'2038-01-19T03:14:07,999999999+0000'}],

     ['ns-relative',
      '--iso=ns', "-d'1970-01-01 00:00:00.1234567 UTC +961062237.987654321 sec'",
      {OUT=>'2000-06-15T09:43:58,111111021+0000'}],

     # Since coreutils/lib/getdate.y revision 1.96 (post-coreutils-5.3.0),
     # a command like the following would mistakenly exit nonzero with an
     # `invalid date ...' diagnostic, but when run in a time zone for
     # which daylight savings time is in effect for the starting date.
     # Unfortunately (for ease of testing), if you set TZ at all, this
     # failure is not triggered, hence the removal of TZ from the environment.
     ['cross-dst', "-d'2005-03-27 +1 day'", '+%Y', {OUT=>'2005'},
		  {PRE => sub {delete $ENV{TZ}}},
		  ],

     ['empty-fmt', '+', {OUT=>''}],
    );

# Repeat the cross-dst test, using Jan 1, 2005 and every interval from 1..364.
foreach my $i (1..364)
  {
    push @Tests, ["cross-dst$i",
		  "-d'2005-01-01 +$i day'", '+%Y', {OUT=>'2005'},
		  {PRE => sub {delete $ENV{TZ}}},
		  ];
  }

# Append "\n" to each OUT=> RHS.
foreach my $t (@Tests)
  {
    foreach my $e (@$t)
      {
        !ref $e || ref $e ne 'HASH'
	  and next;
        defined $e->{OUT}
          and $e->{OUT} .= "\n";
      }
  }

my $save_temps = $ENV{DEBUG};
my $verbose = $ENV{VERBOSE};

my $prog = 'date';
my $fail = run_tests ($ME, $prog, \@Tests, $save_temps, $verbose);
exit $fail;
EOF