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t/Plack-Middleware-APISchema-ResponseValidator.t  view on Meta::CPAN

package t::Plack::Middleware::APISchema::ResponseValidator;
use lib '.';
use t::test;
use t::test::fixtures;
use Plack::Test;
use Plack::Request;
use HTTP::Request::Common;
use JSON::XS qw(encode_json);

sub _require : Test(startup => 1) {
    my ($self) = @_;

    use_ok 'Plack::Middleware::APISchema::ResponseValidator';
}

sub instantiate : Tests {
    my $schema = APISchema::Schema->new;
    my $middleware = Plack::Middleware::APISchema::ResponseValidator->new(schema => $schema);
    isa_ok $middleware, 'Plack::Middleware::APISchema::ResponseValidator';

    is $middleware->schema, $schema;

    isa_ok $middleware->router, 'Router::Simple';
}

sub response_validator : Tests {
    my $schema = t::test::fixtures::prepare_bmi;
    $schema->register_route(
        method => 'POST',
        route => '/bmi_strict',
        response_resource => {
            encoding => { 'application/json' => 'json' },
            body => 'bmi',
        },
    );
    $schema->register_route(
        method => 'POST',
        route => '/bmi_force_json',
        response_resource => {
            encoding => 'json',
            body => 'bmi',
        },
    );
    $schema->register_resource(bmi_header => {
        type => 'object',
        properties => {
            'x_value' => { type => 'number' },
        },
        required => ['x_value'],
    });
    $schema->register_route(
        method => 'POST',
        route => '/bmi_by_header',
        response_resource => {
            header => 'bmi_header',
        },
    );

    my $content_type;
    my $json;
    my $middleware = Plack::Middleware::APISchema::ResponseValidator->new(schema => $schema);
    my $header = [];
    $middleware->wrap(sub {
        [200, [ 'Content-Type' => $content_type, @$header ], [ $json ]  ]
    });

    subtest 'when valid response' => sub {
        test_psgi $middleware => sub {
            $content_type = 'application/json';
            $json = encode_json({value => 19.5});
            $header = [];
            my $server = shift;
            my $res = $server->(POST '/bmi');
            is $res->code, 200;
            done_testing;
        }
    };

    subtest 'when invalid response' => sub {
        test_psgi $middleware => sub {
            $content_type = 'application/json';
            $json = encode_json({value => 'aaa'});
            $header = [];
            my $server = shift;
            my $res = $server->(POST '/bmi');
            is $res->code, 500;
            is $res->header('X-Error-Cause'), 'Plack::Middleware::APISchema::ResponseValidator+Valiemon';
            cmp_deeply $res->content, json({
                body => {
                    attribute => "Valiemon::Attributes::Type",
                    position => '/$ref/properties/value/type',
                    expected => $schema->get_resource_by_name('bmi')->definition->{properties}->{value},
                    actual => 'aaa',
                    message => "Contents do not match resource 'bmi'",
                    encoding => 'json',
                },
            });
            done_testing;
        }
    };

    subtest 'when wrong content-type' => sub {
        test_psgi $middleware => sub {
            $content_type = 'text/plain';
            $json = encode_json({value => 19.5});
            $header = [];
            my $server = shift;
            my $res = $server->(POST '/bmi');
            is $res->code, 500;
            is $res->header('X-Error-Cause'), 'Plack::Middleware::APISchema::ResponseValidator+Valiemon';
            cmp_deeply $res->content, json({
                body => { message => "Wrong content-type: text/plain" },
            });
            done_testing;
        }
    };

    subtest 'when response is not a JSON' => sub {
        test_psgi $middleware => sub {
            $content_type = 'application/json';
            $json = 'aaa';
            $header = [];
            my $server = shift;
            my $res = $server->(POST '/bmi');
            is $res->code, 500;
            is $res->header('X-Error-Cause'), 'Plack::Middleware::APISchema::ResponseValidator+Valiemon';
            cmp_deeply $res->content, json({
                body => {
                    message => "Failed to parse json",
                    encoding => 'json',
                },
            });
            done_testing;
        }
    };

    subtest 'when content-type is incorrect' => sub {
        test_psgi $middleware => sub {
            $content_type = 'application/x-www-form-urlencoded';
            $json = encode_json({value => 19.5});
            $header = [];
            my $server = shift;
            my $res = $server->(POST '/bmi');
            is $res->code, 500;
            is $res->header('X-Error-Cause'), 'Plack::Middleware::APISchema::ResponseValidator+Valiemon';
            cmp_deeply $res->content, json({
                body => {
                    attribute => 'Valiemon::Attributes::Required',
                    position => '/$ref/required',
                    message => "Contents do not match resource 'bmi'",
                    encoding => 'url_parameter',
                    actual => {
                        '{"value":19.5}' => undef,
                    },
                    expected => $schema->get_resource_by_name('bmi')->definition,
                },
            });
            done_testing;
        }
    };

    subtest 'when content-type is incorrect with forced encoding' => sub {
        test_psgi $middleware => sub {
            $content_type = 'application/x-www-form-urlencoded';
            $json = encode_json({value => 19.5});
            $header = [];
            my $server = shift;
            my $res = $server->(POST '/bmi_force_json');
            is $res->code, 200;
            done_testing;
        }
    };

    subtest 'when content-type is incorrect with strict content-type check' => sub {
        test_psgi $middleware => sub {
            $content_type = 'application/x-www-form-urlencoded';
            $json = encode_json({value => 19.5});
            my $server = shift;