How to send serialized post with Plack::Test? - perl

Question

Writing a REST application with perl Dancer2. I set the serializer setting to the format in code.
set serializer => 'JSON';
I wrote a test file to rest the application, but failure in POST.
REST application got KEY but null value.
DBD::Pg::st execute failed: ERROR: null value in column "email" of relation "owners" violates not-null constraint
How to set serialized format content in Plack::Test?
use strict;
use warnings;
use Test::More;
use Test::Deep;
use Plack::Test;
use Plack::Util;
use HTTP::Request::Common;
use JSON::MaybeXS qw(decode_json encode_json);
use Data::Dumper qw(Dumper);
use Storable qw(freeze thaw);
use utf8;
use MyApp;
my %data = (
password => 'A12345678',
email => 'test#test.com'
);
# APP Start
my $app = MyApp->to_app;
my $test = Plack::Test->create($app);
subtest register => sub {
print ">>> Test <<<\n";
my $datas = {
password => $data{password},
email => $data{email},
};
my $serialized_data = freeze($datas);
my $res = $test->request( POST '/api/v1/register', $serialized_data );
print Dumper $res;
};
done_testing();
Dumper $res =>
$VAR1 = bless( {
'_headers' => bless( {
'content-type' => 'application/json',
'server' => 'Perl Dancer2 0.400000',
'content-length' => 454
}, 'HTTP::Headers' ),
'_request' => bless( {
'_headers' => bless( {
'content-length' => 0,
'
12345678
test1#test.comemail
a1234567password' => undef,
'content-type' => 'application/x-www-form-urlencoded',
'::std_case' => {
'
12345678
test1#test.comemail
a1234567password' => '
12345678
Test1#Test.ComEmail
A1234567Password'
}
}, 'HTTP::Headers' ),
I tested this REST API with Postman is fine.