/**
* Test if JSON contains the correct data
*/
public function testJSON()
{
$m = new TestModel();
$m->foo = 'bar';
$json = $m->toJSON();
$data = json_decode($json, true);
// On model level added public attribute
$this->assertArrayHasKey('foo', $data);
// On class level declared public attribute
$this->assertArrayHasKey('name', $data);
// On class level declared private attribute
$this->assertArrayNotHasKey('_secret', $data);
}