my $res = $cb->(GET('http://example.com/test/'));
is(200, $res->code, 'success response received');
like($res->content, qr!href="\Q$atomurl\E"!,
'atom URL generated');
my $res = $cb->(GET('http://example.com/test/'));
is(200, $res->code, 'success response received');
like($res->content, qr!href="\Q$atomurl\E"!,
'atom URL generated');