public function testValidationDefault()
    {
        $data = [
            // 'username' => 'paijo',
            'password' => 'paijo',
            'role' => 5,
            'name' => 'paijo'
        ];
        $user = $this->Users->newEntity($data);
        $this->assertEmpty($user->getErrors()); // empty = no validation errors
    }