use strict;
use warnings;

# This example demonstrates how one might go about writing some tests for a
# client library that interacts with a RESTful API. At a minimum, we want to
# test when we receive a network timeout (which is quite common and all
# clients must be able to handle), a failed query and a successful query.

# Note that *we are not testing the network*, but testing the code that
# interacts with the network. Therefore, we need to make the network behave in
# different ways so we can test how we interact with it.

use Test::More tests => 5;
use Test::Warnings 0.005 ':all';
use Test::LWP::UserAgent;

use lib 'examples';
use MyApp::Client;

my $useragent = Test::LWP::UserAgent->new;
# this is what LWP::UserAgent effectively does when it encounters a timeout
$useragent->map_response(qr{user/timeout}, sub { die 'read timeout' });
$useragent->map_response(
    qr{user/fred},
    HTTP::Response->new('404', HTTP::Status::status_message('404'),
        [ 'Content-Type' => 'text/plain' ],
        'user fred does not exist',
    ),
);
$useragent->map_response(
    qr{user/barney},
    HTTP::Response->new('200', HTTP::Status::status_message('200'),
        [ 'Content-Type' => 'application/json' ],
        '{"user":"barney","userid":"50","blog_posts":"1","post_ids":["76"]}',
    ),
);

my $client = MyApp::Client->new(useragent => $useragent);

my @ids;
like(
    warning { @ids = $client->get_indexes(user => 'timeout') },
    qr{network timeout when fetching http://.*user/timeout},
    'warning issued on network timeout',
);
is_deeply(\@ids, [], 'no ids returned on network timeout');

@ids = $client->get_indexes(user => 'fred');
is_deeply(\@ids, [], 'no ids returned for non-existent user');

@ids = $client->get_indexes(user => 'barney');
is_deeply(\@ids, [ 76 ], 'one id returned for regular user');

