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use Test::More;
use strict; use warnings FATAL => 'all';
use List::Objects::WithUtils;
ok hash->is_mutable, 'hash is_mutable';
ok !immhash->is_mutable, 'immhash ! is_mutable';
ok !hash->is_immutable, 'hash ! is_immutable';
ok immhash->is_immutable, 'immhash is_immutable';
my $imm = immhash( foo => 1, bar => 2 );
for my $method
(@List::Objects::WithUtils::Role::Hash::Immutable::ImmutableMethods) {
local $@;
eval {; $imm->$method };
like $@, qr/implemented/, "$method dies"
}
eval {; $imm->{baz} = 'quux' };
like $@, qr/read-only/,
'attempt to add key died' or diag explain $@;
eval {; $imm->{foo} = 2 };
like $@, qr/read-only/,
'attempt to modify existing died';
eval {; delete $imm->{bar} };
like $@, qr/read-only/,
'attempt to delete key died';
eval {; %$imm = () };
like $@, qr/read-only/,
'attempt to clear hash died';
ok $imm->get('foo') == 1 && $imm->get('bar') == 2,
'hash ok after attempted clear';
ok !$imm->get('nonexistant'), 'retrieving nonexistant key ok';
{ my $warned; local $SIG{__WARN__} = sub { $warned = shift };
$imm->kv_sort(sub { $a cmp $b });
ok !$warned, 'immhash imported $a/$b vars ok';
}
done_testing;
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