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use Config::Std {def_sep => '='};
use Test::More 'no_plan';
my $input_file = 'test.cfg';
my %config;
ok eval{ read_config $input_file => %config } => 'Read succeeded';
diag( $@ ) if $@;
$config{'Extra Eq'}{'key 1'} = 'extra key 1';
push @{$config{Named}{list}}, 'an extra line';
ok eval{ write_config %config } => 'Write succeeded';
ok open(my $fh, '<', $input_file) => 'File opened';
ok my @config = <$fh> => 'File read';
ok my @extra = <DATA> => 'DATA loaded';
is_deeply [@config[-4..-1]], [@extra[-4..-1]] => 'Extra content correct';
__DATA__
[Extra Eq]
key 1 = extra key 1
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