1#!./perl -w 2 3BEGIN { 4 # We're not going to chdir() into 't' because we don't know if 5 # chdir() works! Instead, we'll hedge our bets and put both 6 # possibilities into @INC. 7 @INC = qw(t . lib ../lib); 8} 9 10use Config; 11require "test.pl"; 12plan(tests => 31); 13 14my $IsVMS = $^O eq 'VMS'; 15my $IsMacOS = $^O eq 'MacOS'; 16 17# Might be a little early in the testing process to start using these, 18# but I can't think of a way to write this test without them. 19use File::Spec::Functions qw(:DEFAULT splitdir rel2abs splitpath); 20 21# Can't use Cwd::abs_path() because it has different ideas about 22# path separators than File::Spec. 23sub abs_path { 24 my $d = rel2abs(curdir); 25 26 $d = uc($d) if $IsVMS; 27 $d = lc($d) if $^O =~ /^uwin/; 28 $d; 29} 30 31my $Cwd = abs_path; 32 33# Let's get to a known position 34SKIP: { 35 my ($vol,$dir) = splitpath(abs_path,1); 36 my $test_dir = $IsVMS ? 'T' : 't'; 37 skip("Already in t/", 2) if (splitdir($dir))[-1] eq $test_dir; 38 39 ok( chdir($test_dir), 'chdir($test_dir)'); 40 is( abs_path, catdir($Cwd, $test_dir), ' abs_path() agrees' ); 41} 42 43$Cwd = abs_path; 44 45# The environment variables chdir() pays attention to. 46my @magic_envs = qw(HOME LOGDIR SYS$LOGIN); 47 48sub check_env { 49 my($key) = @_; 50 51 # Make sure $ENV{'SYS$LOGIN'} is only honored on VMS. 52 if( $key eq 'SYS$LOGIN' && !$IsVMS && !$IsMacOS ) { 53 ok( !chdir(), "chdir() on $^O ignores only \$ENV{$key} set" ); 54 is( abs_path, $Cwd, ' abs_path() did not change' ); 55 pass( " no need to test SYS\$LOGIN on $^O" ) for 1..7; 56 } 57 else { 58 ok( chdir(), "chdir() w/ only \$ENV{$key} set" ); 59 is( abs_path, $ENV{$key}, ' abs_path() agrees' ); 60 chdir($Cwd); 61 is( abs_path, $Cwd, ' and back again' ); 62 63 my $warning = ''; 64 local $SIG{__WARN__} = sub { $warning .= join '', @_ }; 65 66 67 # Check the deprecated chdir(undef) feature. 68#line 64 69 ok( chdir(undef), "chdir(undef) w/ only \$ENV{$key} set" ); 70 is( abs_path, $ENV{$key}, ' abs_path() agrees' ); 71 is( $warning, <<WARNING, ' got uninit & deprecation warning' ); 72Use of uninitialized value in chdir at $0 line 64. 73Use of chdir('') or chdir(undef) as chdir() is deprecated at $0 line 64. 74WARNING 75 76 chdir($Cwd); 77 78 # Ditto chdir(''). 79 $warning = ''; 80#line 76 81 ok( chdir(''), "chdir('') w/ only \$ENV{$key} set" ); 82 is( abs_path, $ENV{$key}, ' abs_path() agrees' ); 83 is( $warning, <<WARNING, ' got deprecation warning' ); 84Use of chdir('') or chdir(undef) as chdir() is deprecated at $0 line 76. 85WARNING 86 87 chdir($Cwd); 88 } 89} 90 91my %Saved_Env = (); 92sub clean_env { 93 foreach my $env (@magic_envs) { 94 $Saved_Env{$env} = $ENV{$env}; 95 96 # Can't actually delete SYS$ stuff on VMS. 97 next if $IsVMS && $env eq 'SYS$LOGIN'; 98 next if $IsVMS && $env eq 'HOME' && !$Config{'d_setenv'}; 99 100 unless ($IsMacOS) { # ENV on MacOS is "special" :-) 101 # On VMS, %ENV is many layered. 102 delete $ENV{$env} while exists $ENV{$env}; 103 } 104 } 105 106 # The following means we won't really be testing for non-existence, 107 # but in Perl we can only delete from the process table, not the job 108 # table. 109 $ENV{'SYS$LOGIN'} = '' if $IsVMS; 110} 111 112END { 113 no warnings 'uninitialized'; 114 115 # Restore the environment for VMS (and doesn't hurt for anyone else) 116 @ENV{@magic_envs} = @Saved_Env{@magic_envs}; 117} 118 119 120foreach my $key (@magic_envs) { 121 # We're going to be using undefs a lot here. 122 no warnings 'uninitialized'; 123 124 clean_env; 125 $ENV{$key} = catdir $Cwd, ($IsVMS ? 'OP' : 'op'); 126 127 check_env($key); 128} 129 130{ 131 clean_env; 132 if (($IsVMS || $IsMacOS) && !$Config{'d_setenv'}) { 133 pass("Can't reset HOME, so chdir() test meaningless"); 134 } else { 135 ok( !chdir(), 'chdir() w/o any ENV set' ); 136 } 137 is( abs_path, $Cwd, ' abs_path() agrees' ); 138} 139