public function testIssetForPrimaryKey() { $this->assertTrue(isset($this->users[0]->id)); $this->assertTrue(isset($this->users[0]['id'])); $this->assertTrue($this->users[0]->contains('id')); $user = new User(); $this->assertTrue(isset($user->id)); $this->assertTrue(isset($user['id'])); $this->assertTrue($user->contains('id')); }