simple_content_filter.t

use strict;
use warnings;
use Test::More;
use Plack::Builder;
use Plack::Test;
use HTTP::Request::Common;

my $app = sub { [200,[],['Hello, World']] };

my $wrapped = builder {
    enable 'SimpleContentFilter', filter => sub { s/Hello/Welcome/g; };
    $app;
};

test_psgi $wrapped, sub {
    my $cb = shift;
    my $res = $cb->(GET '/');
    ok $res->is_success;
    is $res->content, 'Welcome, World';
};

done_testing;

SimpleContentFilter checks that Content-Type is 'text/*'.
When not matched, content will not be filtering.