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#!/usr/bin/perl -Tw
BEGIN {
if( $ENV{PERL_CORE} ) {
@INC = '../lib';
chdir 't';
}
}
use Test::More tests => 45;
use Data::Util qw(sv_readonly_flag);
my @Exported_Funcs;
BEGIN {
@Exported_Funcs = qw(lock_keys unlock_keys
lock_value unlock_value
lock_hash unlock_hash
);
use_ok 'Hash::Util', @Exported_Funcs;
}
foreach my $func (@Exported_Funcs) {
can_ok __PACKAGE__, $func;
}
my %hash = (foo => 42, bar => 23, locked => 'yep');
lock_keys(%hash);
eval { $hash{baz} = 99; };
like( $@, qr/^Attempt to access disallowed key 'baz' in a fixed hash/,
'lock_keys()');
is( $hash{bar}, 23 );
ok( !exists $hash{baz} );
delete $hash{bar};
ok( !exists $hash{bar} );
$hash{bar} = 69;
is( $hash{bar}, 69 );
eval { () = $hash{i_dont_exist} };
like( $@, qr/^Attempt to access disallowed key 'i_dont_exist' in a fixed hash/ );
lock_value(%hash, 'locked');
eval { print "# oops" if $hash{four} };
like( $@, qr/^Attempt to access disallowed key 'four' in a fixed hash/ );
eval { $hash{"\x{2323}"} = 3 };
like( $@, qr/^Attempt to access disallowed key '(.*)' in a fixed hash/,
'wide hex key' );
eval { delete $hash{locked} };
like( $@, qr/^Attempt to delete readonly key 'locked' from a fixed hash/,
'trying to delete a locked key' );
eval { $hash{locked} = 42; };
like( $@, qr/^Modification of a read-only value attempted/,
'trying to change a locked key' );
is( $hash{locked}, 'yep' );
eval { delete $hash{I_dont_exist} };
like( $@, qr/^Attempt to delete disallowed key 'I_dont_exist' from a fixed hash/,
'trying to delete a key that doesnt exist' );
ok( !exists $hash{I_dont_exist} );
unlock_keys(%hash);
$hash{I_dont_exist} = 42;
is( $hash{I_dont_exist}, 42, 'unlock_keys' );
eval { $hash{locked} = 42; };
like( $@, qr/^Modification of a read-only value attempted/,
' individual key still readonly' );
eval { delete $hash{locked} },
is( $@, '', ' but can be deleted :(' );
unlock_value(%hash, 'locked');
$hash{locked} = 42;
is( $hash{locked}, 42, 'unlock_value' );
TODO: {
# local $TODO = 'assigning to a hash screws with locked keys';
my %hash = ( foo => 42, locked => 23 );
lock_keys(%hash);
lock_value(%hash, 'locked');
eval { %hash = ( wubble => 42 ) }; # we know this will bomb
like( $@, qr/^Attempt to clear a fixed hash/ );
eval { unlock_value(%hash, 'locked') }; # but this shouldn't
is( $@, '', 'unlock_value() after denied assignment' );
is_deeply( \%hash, { foo => 42, locked => 23 },
'hash should not be altered by denied assignment' );
unlock_keys(%hash);
}
{
my %hash = (KEY => 'val', RO => 'val');
lock_keys(%hash);
lock_value(%hash, 'RO');
eval { %hash = (KEY => 1) };
like( $@, qr/^Attempt to clear a fixed hash/ );
}
# TODO: This should be allowed but it might require putting extra
# code into aassign.
{
my %hash = (KEY => 1, RO => 2);
lock_keys(%hash);
eval { %hash = (KEY => 1, RO => 2) };
like( $@, qr/^Attempt to clear a fixed hash/ );
}
{
my %hash = ();
lock_keys(%hash, qw(foo bar));
is( keys %hash, 0, 'lock_keys() w/keyset shouldnt add new keys' );
$hash{foo} = 42;
is( keys %hash, 1 );
eval { $hash{wibble} = 42 };
like( $@, qr/^Attempt to access disallowed key 'wibble' in a fixed hash/,
' locked');
unlock_keys(%hash);
eval { $hash{wibble} = 23; };
is( $@, '', 'unlock_keys' );
}
{
my %hash = (foo => 42, bar => undef, baz => 0);
lock_keys(%hash, qw(foo bar baz up down));
is( keys %hash, 3, 'lock_keys() w/keyset didnt add new keys' );
is_deeply( \%hash, { foo => 42, bar => undef, baz => 0 } );
eval { $hash{up} = 42; };
is( $@, '' );
eval { $hash{wibble} = 23 };
like( $@, qr/^Attempt to access disallowed key 'wibble' in a fixed hash/, ' locked' );
}
{
my %hash = (foo => 42, bar => undef);
eval { lock_keys(%hash, qw(foo baz)); };
is( $@, sprintf("Hash has key 'bar' which is not in the new key ".
"set at %s line %d\n", __FILE__, __LINE__ - 2) );
}
{
my %hash = (foo => 42, bar => 23);
lock_hash( %hash );
ok( sv_readonly_flag(%hash) );
ok( sv_readonly_flag($hash{foo}) );
ok( sv_readonly_flag($hash{bar}) );
unlock_hash ( %hash );
ok( !sv_readonly_flag(%hash) );
ok( !sv_readonly_flag($hash{foo}) );
ok( !sv_readonly_flag($hash{bar}) );
}
lock_keys(%ENV);
eval { () = $ENV{I_DONT_EXIST} };
like( $@, qr/^Attempt to access disallowed key 'I_DONT_EXIST' in a fixed hash/, 'locked %ENV');
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