$I->sendPOST('/users', $newUser);
$I->seeHttpHeader('Status', '400 Password is too short');
///////////////////////////////
$I->amGoingTo('post $newUser ' . $foo['username'] . ' with a valid password');
$newUser = ['username' => $foo['username'], 'password' => $foo['password']];
$I->sendPOST('/users', $newUser);
$I->seeHttpHeader('Status', "201 Created with username {$newUser['username']}");
$I->seeHttpHeader('Location');
$foo['uri'] = $I->grabHttpHeader('Location');
///////////////////////////////
$I->amGoingTo('post $newUser with a existent username');
$newUser = ['username' => 'foo', 'password' => $bar['password']];
$I->sendPOST('/users', $newUser);
$I->seeHttpHeader('Status', "409 User {$newUser['username']} already exists");
///////////////////////////////
$I->amGoingTo('post $newUser ' . $foo['username']);
$newUser = ['username' => $bar['username'], 'password' => $bar['password']];
$I->sendPost('/users', $newUser);
$I->seeHttpHeader('Status', "201 Created with username {$newUser['username']}");
$I->seeHttpHeader('Location');
$bar['uri'] = $I->grabHttpHeader('Location');
///////////////////////////////
$I->amGoingTo('request user $foo at ' . $foo['uri']);
$I->sendGet($foo['uri']);
$I->seeResponseCodeIs(200);
$I->seeResponseEquals(json_encode(['username' => $foo['username'], 'uri' => "/users/{$foo['username']}", 'articles' => "/users/{$foo['username']}/articles"]));
///////////////////////////////
$I->amGoingTo('request all users');
$I->sendGet('/users');
$I->seeResponseCodeIs(200);
$I->seeResponseEquals(json_encode([['username' => $foo['username'], 'uri' => "/users/{$foo['username']}", 'articles' => "/users/{$foo['username']}/articles"], ['username' => $bar['username'], 'uri' => "/users/{$bar['username']}", 'articles' => "/users/{$bar['username']}/articles"]]));