File: session_lifecycle.t

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use strict;
use warnings;
use Test::More;
use Plack::Test;
use HTTP::Request::Common;
use HTTP::Cookies;
use lib 't/lib';

{
    package App;
    use Dancer2;

    set session     => 'Simple';
    set show_errors => 1;

    get '/no_session_data' => sub {
        return "session not modified";
    };

    get '/set_session/*' => sub {
        my ($name) = splat;
        session name => $name;
    };

    get '/read_session' => sub {
        my $name = session('name') || '';
        "name='$name'";
    };

    get '/change_session_id' => sub {
        app->change_session_id;
    };

    get '/destroy_session' => sub {
        my $name = session('name') || '';
        app->destroy_session;
        return "destroyed='$name'";
    };

    get '/churn_session' => sub {
        app->destroy_session;
        session name => 'damian';
        return "churned";
    };
}

my $url  = 'http://localhost';
my $test = Plack::Test->create( App->to_app );
my $app = Dancer2->runner->apps->[0];

for my $engine (qw(YAML Simple SimpleNoChangeId)) {

    # clear current session engine, and rebuild for the test
    # This is *really* messy, playing in object hashrefs..
    delete $app->{session_engine};
    $app->config->{session} = $engine;
    $app->session_engine;    # trigger a build

    my $jar = HTTP::Cookies->new();

    subtest "[$engine] No cookie set if session not referenced" => sub {
        my $res = $test->request(GET "$url/no_session_data");
        ok $res->is_success, "/no_session_data"
          or diag explain $res;

        $jar->extract_cookies($res);
        ok(!$jar->as_string, 'No cookie set');
    };

    subtest "[$engine] No empty session created if session read attempted" =>
      sub {
        my $res = $test->request(GET "$url/read_session");
        ok $res->is_success, "/read_session";

        $jar->extract_cookies($res);
        ok(!$jar->as_string, 'No cookie set');
      };

    my $sid1;
    subtest "[$engine] Set value into session" => sub {
        my $res = $test->request(GET "$url/set_session/larry");
        ok $res->is_success, "/set_session/larry";

        $jar->extract_cookies($res);
        ok($jar->as_string, 'Cookie set');

        # extract SID
        $jar->scan(sub { $sid1 = $_[2] });
        ok($sid1, 'Got SID from cookie');
    };

    subtest "[$engine] Read value back" => sub {

        # read value back
        my $req = GET "$url/read_session";
        $jar->add_cookie_header($req);
        my $res = $test->request($req);
        ok $res->is_success, "/read_session";

        $jar->clear;
        ok(!$jar->as_string, 'Jar cleared');

        $jar->extract_cookies($res);
        ok($jar->as_string, 'session cookie set again');
        like $res->content, qr/name='larry'/, "session value looks good";
    };

    subtest
      "[$engine] Session cookie persists even if we do not touch sessions" =>
      sub {
        my $req = GET "$url/no_session_data";
        $jar->add_cookie_header($req);

        my $res = $test->request($req);
        ok $res->is_success, "/no_session_data";

        $jar->clear;
        ok(!$jar->as_string, 'Jar cleared');

        $jar->extract_cookies($res);
        ok($jar->as_string, 'session cookie set again');
      };

    my $sid2;
    subtest "[$engine] Change session ID" => sub {
        my $req = GET "$url/change_session_id";
        $jar->add_cookie_header($req);
        my $res = $test->request($req);
        ok $res->is_success, "/change_session_id";

        $jar->clear;
        ok(!$jar->as_string, 'Jar cleared');

        $jar->extract_cookies($res);
        ok($jar->as_string, 'session cookie set again');

        # extract SID
        $jar->scan(sub { $sid2 = $_[2] });
        isnt $sid2, $sid1, "New session has different ID";
        is $res->content, $sid2, "new session ID returned";
    };

    subtest "[$engine] Read value back after change_session_id" => sub {

        # read value back
        my $req = GET "$url/read_session";
        $jar->add_cookie_header($req);
        my $res = $test->request($req);
        ok $res->is_success, "/read_session";

        $jar->clear;
        ok(!$jar->as_string, 'Jar cleared');

        $jar->extract_cookies($res);
        ok($jar->as_string, 'session cookie set again');
        like $res->content, qr/name='larry'/, "session value looks good";
    };

    subtest
      "[$engine] Destroy session and check that cookies expiration is set" =>
      sub {
        my $req = GET "$url/destroy_session";
        $jar->add_cookie_header($req);

        my $res = $test->request($req);
        ok $res->is_success, "/destroy_session";

        ok($jar->as_string, 'We have a cookie before reading response');
        $jar->extract_cookies($res);
        ok(!$jar->as_string, 'Cookie was removed from jar');
      };

    subtest "[$engine] Session cookie not sent after session destruction" =>
      sub {
        my $req = GET "$url/no_session_data";
        $jar->add_cookie_header($req);

        my $res = $test->request($req);
        ok $res->is_success, "/no_session_data";

        ok(!$jar->as_string, 'Jar is empty');
        $jar->extract_cookies($res);
        ok(!$jar->as_string, 'Jar still empty (no new session cookie)');
      };

    my $sid3;
    subtest "[$engine] Set value into session again" => sub {
        my $res = $test->request(GET "$url/set_session/curly");
        ok $res->is_success, "/set_session/larry";

        $jar->extract_cookies($res);
        ok($jar->as_string, 'session cookie set');

        # extract SID
        $jar->scan(sub { $sid3 = $_[2] });
        isnt $sid3, $sid2, "New session has different ID";
    };

    subtest "[$engine] Destroy and create a session in one request" => sub {
        my $req = GET "$url/churn_session";
        $jar->add_cookie_header($req);

        my $res = $test->request($req);
        ok $res->is_success, "/churn_session";

        $jar->extract_cookies($res);
        ok($jar->as_string, 'session cookie set');

        my $sid4;
        $jar->scan(sub { $sid4 = $_[2] });
        isnt $sid4, $sid3, "Changed session has different ID";
    };

    subtest "[$engine] Read value back" => sub {
        my $req = GET "$url/read_session";
        $jar->add_cookie_header($req);

        my $res = $test->request($req);
        ok $res->is_success, "/read_session";

        $jar->extract_cookies($res);
        ok($jar->as_string, "session cookie set");
        like $res->content, qr/name='damian'/, "session value looks good";
    };
}

done_testing;