public function testGrabDataFromJsonResponse() {
$this->module->sendGET('/rest/user/');
// simple assoc array
$this->assertEquals('*****@*****.**', $this->module->grabDataFromJsonResponse('email'));
// nested assoc array
$this->assertEquals('Kyiv', $this->module->grabDataFromJsonResponse('address.city'));
// nested index array
$this->assertEquals('DavertMik', $this->module->grabDataFromJsonResponse('aliases.0'));
// fail if data not found
$this->setExpectedException('PHPUnit_Framework_AssertionFailedError', 'Response does not have required data');
$this->module->grabDataFromJsonResponse('address.street');
}