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dist/PathTools/t/cwd.t  view on Meta::CPAN

my $vms_unix_rpt = 0;
my $vms_efs = 0;
my $vms_mode = 0;

if ($IsVMS) {
    require VMS::Filespec;
    use Carp;
    use Carp::Heavy;
    $vms_mode = 1;
    if (eval 'require VMS::Feature') {
        $vms_unix_rpt = VMS::Feature::current("filename_unix_report");
        $vms_efs = VMS::Feature::current("efs_charset");
    } else {
        my $unix_rpt = $ENV{'DECC$FILENAME_UNIX_REPORT'} || '';
        my $efs_charset = $ENV{'DECC$EFS_CHARSET'} || '';
        $vms_unix_rpt = $unix_rpt =~ /^[ET1]/i; 
        $vms_efs = $efs_charset =~ /^[ET1]/i; 
    }
    $vms_mode = 0 if ($vms_unix_rpt);
}

my $tests = 31;
# _perl_abs_path() currently only works when the directory separator
# is '/', so don't test it when it won't work.
my $EXTRA_ABSPATH_TESTS = ($Config{prefix} =~ m/\//) && $^O ne 'cygwin';
$tests += 4 if $EXTRA_ABSPATH_TESTS;
plan tests => $tests;

SKIP: {
  skip "no need to check for blib/ in the core", 1 if $ENV{PERL_CORE};
  like $INC{'Cwd.pm'}, qr{blib}i, "Cwd should be loaded from blib/ during testing";
}


# check imports
can_ok('main', qw(cwd getcwd fastcwd fastgetcwd));
ok( !defined(&chdir),           'chdir() not exported by default' );
ok( !defined(&abs_path),        '  nor abs_path()' );
ok( !defined(&fast_abs_path),   '  nor fast_abs_path()');

{
  my @fields = qw(PATH IFS CDPATH ENV BASH_ENV);
  my $before = grep exists $ENV{$_}, @fields;
  cwd();
  my $after = grep exists $ENV{$_}, @fields;
  is($before, $after, "cwd() shouldn't create spurious entries in %ENV");
}

# XXX force Cwd to bootstrap its XSUBs since we have set @INC = "../lib"
# XXX and subsequent chdir()s can make them impossible to find
eval { fastcwd };

# Must find an external pwd (or equivalent) command.

my $pwd = $^O eq 'MSWin32' ? "cmd" : "pwd";
my $pwd_cmd =
    ($^O eq "NetWare") ?
        "cd" :
        (grep { -x && -f } map { "$_/$pwd$Config{exe_ext}" }
	                   split m/$Config{path_sep}/, $ENV{PATH})[0];

$pwd_cmd = 'SHOW DEFAULT' if $IsVMS;
if ($^O eq 'MSWin32') {
    $pwd_cmd =~ s,/,\\,g;
    $pwd_cmd = "$pwd_cmd /c cd";
}
$pwd_cmd =~ s=\\=/=g if ($^O eq 'dos');

SKIP: {
    skip "No native pwd command found to test against", 4 unless $pwd_cmd;

    print "# native pwd = '$pwd_cmd'\n";

    local @ENV{qw(PATH IFS CDPATH ENV BASH_ENV)};
    my ($pwd_cmd_untainted) = $pwd_cmd =~ /^(.+)$/; # Untaint.
    chomp(my $start = `$pwd_cmd_untainted`);

    # Win32's cd returns native C:\ style
    $start =~ s,\\,/,g if ($^O eq 'MSWin32' || $^O eq "NetWare");
    if ($IsVMS) {
        # DCL SHOW DEFAULT has leading spaces
        $start =~ s/^\s+//;

        # When in UNIX report mode, need to convert to compare it.
        if ($vms_unix_rpt) {
            $start = VMS::Filespec::unixpath($start);
            # Remove trailing slash.
            $start =~ s#/$##;
        }
    }
    SKIP: {
        skip("'$pwd_cmd' failed, nothing to test against", 4) if $?;
        skip("/afs seen, paths unlikely to match", 4) if $start =~ m|/afs/|;

	# Darwin's getcwd(3) (which Cwd.xs:bsd_realpath() uses which
	# Cwd.pm:getcwd uses) has some magic related to the PWD
	# environment variable: if PWD is set to a directory that
	# looks about right (guess: has the same (dev,ino) as the '.'?),
	# the PWD is returned.  However, if that path contains
	# symlinks, the path will not be equal to the one returned by
	# /bin/pwd (which probably uses the usual walking upwards in
	# the path -trick).  This situation is easy to reproduce since
	# /tmp is a symlink to /private/tmp.  Therefore we invalidate
	# the PWD to force getcwd(3) to (re)compute the cwd in full.
	# Admittedly fixing this in the Cwd module would be better
	# long-term solution but deleting $ENV{PWD} should not be
	# done light-heartedly. --jhi
	delete $ENV{PWD} if $^O eq 'darwin';

	my $cwd        = cwd;
	my $getcwd     = getcwd;
	my $fastcwd    = fastcwd;
	my $fastgetcwd = fastgetcwd;

	is($cwd,        $start, 'cwd()');
	is($getcwd,     $start, 'getcwd()');
	is($fastcwd,    $start, 'fastcwd()');
	is($fastgetcwd, $start, 'fastgetcwd()');
    }
}