File: morbo.t

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use Mojo::Base -strict;

BEGIN { $ENV{MOJO_REACTOR} = 'Mojo::Reactor::Poll' }

use Test::More;

plan skip_all => 'set TEST_MORBO to enable this test (developer only!)'
  unless $ENV{TEST_MORBO} || $ENV{TEST_ALL};

use FindBin;
use lib "$FindBin::Bin/lib";

use IO::Socket::INET;
use Mojo::File 'tempdir';
use Mojo::IOLoop::Server;
use Mojo::Server::Morbo::Backend;
use Mojo::Server::Daemon;
use Mojo::Server::Morbo;
use Mojo::UserAgent;
use Socket qw(SO_REUSEPORT SOL_SOCKET);

# Prepare script
my $dir    = tempdir;
my $script = $dir->child('myapp.pl');
my $subdir = $dir->child('test', 'stuff')->make_path;
my $morbo  = Mojo::Server::Morbo->new();
$morbo->backend->watch([$subdir, $script]);
is_deeply $morbo->backend->modified_files, [], 'no files have changed';
$script->spurt(<<EOF);
use Mojolicious::Lite;

app->log->level('fatal');

get '/hello' => {text => 'Hello Morbo!'};

app->start;
EOF

# Start
my $port   = Mojo::IOLoop::Server->generate_port;
my $prefix = "$FindBin::Bin/../../script";
my $pid    = open my $server, '-|', $^X, "$prefix/morbo", '-l',
  "http://127.0.0.1:$port", $script;
sleep 1 while !_port($port);

# Application is alive
my $ua = Mojo::UserAgent->new;
my $tx = $ua->get("http://127.0.0.1:$port/hello");
ok $tx->is_finished, 'transaction is finished';
is $tx->res->code, 200,            'right status';
is $tx->res->body, 'Hello Morbo!', 'right content';

# Same result
$tx = $ua->get("http://127.0.0.1:$port/hello");
ok $tx->is_finished, 'transaction is finished';
is $tx->res->code, 200,            'right status';
is $tx->res->body, 'Hello Morbo!', 'right content';

# Update script without changing size
my ($size, $mtime) = (stat $script)[7, 9];
$script->spurt(<<EOF);
use Mojolicious::Lite;

app->log->level('fatal');

get '/hello' => {text => 'Hello World!'};

app->start;
EOF
is_deeply $morbo->backend->modified_files, [$script], 'file has changed';
ok((stat $script)[9] > $mtime, 'modify time has changed');
is((stat $script)[7], $size, 'still equal size');
sleep 3;

# Application has been reloaded
$tx = $ua->get("http://127.0.0.1:$port/hello");
ok $tx->is_finished, 'transaction is finished';
is $tx->res->code, 200,            'right status';
is $tx->res->body, 'Hello World!', 'right content';

# Same result
$tx = $ua->get("http://127.0.0.1:$port/hello");
ok $tx->is_finished, 'transaction is finished';
is $tx->res->code, 200,            'right status';
is $tx->res->body, 'Hello World!', 'right content';

# Update script without changing mtime
($size, $mtime) = (stat $script)[7, 9];
is_deeply $morbo->backend->modified_files, [], 'no files have changed';
$script->spurt(<<'EOF');
use Mojolicious::Lite;

app->log->level('fatal');

my $message = 'Failed!';
hook before_server_start => sub { $message = 'Hello!' };

get '/hello' => sub { shift->render(text => $message) };

app->start;
EOF
utime $mtime, $mtime, $script;
is_deeply $morbo->backend->modified_files, [$script], 'file has changed';
ok((stat $script)[9] == $mtime, 'modify time has not changed');
isnt((stat $script)[7], $size, 'size has changed');
sleep 3;

# Application has been reloaded again
$tx = $ua->get("http://127.0.0.1:$port/hello");
ok $tx->is_finished, 'transaction is finished';
is $tx->res->code, 200,      'right status';
is $tx->res->body, 'Hello!', 'right content';

# Same result
$tx = $ua->get("http://127.0.0.1:$port/hello");
ok $tx->is_finished, 'transaction is finished';
is $tx->res->code, 200,      'right status';
is $tx->res->body, 'Hello!', 'right content';

# New file(s)
is_deeply $morbo->backend->modified_files, [], 'directory has not changed';
my @new = map { $subdir->child("$_.txt") } qw/test testing/;
$_->spurt('whatever') for @new;
is_deeply $morbo->backend->modified_files, \@new, 'two files have changed';
$subdir->child('.hidden.txt')->spurt('whatever');
is_deeply $morbo->backend->modified_files, [],
  'directory has not changed again';

# Broken symlink
SKIP: {
  skip 'Symlink support required!', 4 unless eval { symlink '', ''; 1 };
  my $missing = $subdir->child('missing.txt');
  my $broken  = $subdir->child('broken.txt');
  symlink $missing, $broken;
  ok -l $broken,  'symlink created';
  ok !-f $broken, 'symlink target does not exist';
  my $warned;
  local $SIG{__WARN__} = sub { $warned++ };
  is_deeply $morbo->backend->modified_files, [], 'directory has not changed';
  ok !$warned, 'no warnings';
}

# Stop
kill 'INT', $pid;
sleep 1 while _port($port);

# Custom backend
{
  local $ENV{MOJO_MORBO_BACKEND} = 'TestBackend';
  local $ENV{MOJO_MORBO_TIMEOUT} = 2;
  my $test_morbo = Mojo::Server::Morbo->new;
  isa_ok $test_morbo->backend, 'Mojo::Server::Morbo::Backend::TestBackend',
    'right backend';
  is_deeply $test_morbo->backend->modified_files, ['always_changed'],
    'always changes';
  is $test_morbo->backend->watch_timeout, 2, 'right timeout';
}

# SO_REUSEPORT
SKIP: {
  skip 'SO_REUSEPORT support required!', 2 unless eval { _reuse_port() };

  my $port   = Mojo::IOLoop::Server->generate_port;
  my $daemon = Mojo::Server::Daemon->new(
    listen => ["http://127.0.0.1:$port"],
    silent => 1
  )->start;
  ok !$daemon->ioloop->acceptor($daemon->acceptors->[0])
    ->handle->getsockopt(SOL_SOCKET, SO_REUSEPORT),
    'no SO_REUSEPORT socket option';
  $daemon = Mojo::Server::Daemon->new(
    listen => ["http://127.0.0.1:$port?reuse=1"],
    silent => 1
  );
  $daemon->start;
  ok $daemon->ioloop->acceptor($daemon->acceptors->[0])
    ->handle->getsockopt(SOL_SOCKET, SO_REUSEPORT),
    'SO_REUSEPORT socket option';
}

# Abstract methods
eval { Mojo::Server::Morbo::Backend->modified_files };
like $@, qr/Method "modified_files" not implemented by subclass/, 'right error';

sub _port { IO::Socket::INET->new(PeerAddr => '127.0.0.1', PeerPort => shift) }

sub _reuse_port {
  IO::Socket::INET->new(
    Listen    => 1,
    LocalPort => Mojo::IOLoop::Server->generate_port,
    ReusePort => 1
  );
}

done_testing();