public function testSequentialSave()
{
$post1 = new Post('First post');
$post2 = new Post('Second post');
$this->assertEquals($post1->title, 'First post');
$this->assertEquals($post2->title, 'Second post');
$post1->save();
$post2->save();
$this->assertEquals($post1->title, 'First post');
$this->assertEquals($post2->title, 'Second post');
}