Question

我已经令人满意地处理了选择1所有其他人都在空中。我已将新书附加到文件末尾，但我无法在现有书籍中搜索查询。我也没有正确的代码来处理发行书籍并将其从记录中删除并将其从students.txt文件中删除。

from django.test import TestCase, Client
from django.test.client import RequestFactory
from django.contrib.auth.models import AnonymousUser, User
from .views import my_view
from .forms import MyForm
from django.contrib.sessions.middleware import SessionMiddleware

# If Python >= 3.4
from unittest.mock import patch, MagicMock
# Else
from mock import patch, MagicMock

class SimpleTest(TestCase):
    def setUp(self):
        # Create a RequestFactory accessible by the entire class.
        self.factory = RequestFactory()
        # Create a new user object accessible by the entire class.
        self.user = User.objects.create_user(username='username', 
                                 email='email', password='password')

    def test_my_view(self):
        # Create an instance of a GET request.
        request = self.factory.get('/my-url/')

        # Middleware is not supported so simulate a
        # logged-in user by setting request.user.
        request.user = self.user

        # Or add anonymous user to request.
        request.user = AnonymousUser()

        # Test view() at '/my-url/'
        response = my_view(request)
        self.assertEqual(response.status_code, 200)

    @patch('app.models.ModelName.save', MagicMock(name="save"))
    def test_my_form_view_with_factory(self):
        # Set up form data.
        form_data = {'something': 'something'}

        # Create an instance of a POST request.
        request = self.factory.post('/my-form-url/', form_data)

        # Simulate logged-in user
        request.user = self.user

        # Setup session.
        middleware = SessionMiddleware()
        middleware.process_request(request)
        request.session.save()

        # Or you should just be able to do
        request.session['somekey'] = 'test'
        request.session.save()           

        # Get response from form view, and test passing 
        # request/data to form.
        form = MyForm(request=request, data=form_data)
        response = my_form_view(request)

        self.assertTrue(form.is_valid())
        self.assertEqual(response.status_code, 200)

        # If model form you can do 
        self.assertTrue(ModelName.save.called)

    @patch('app.models.ModelName.save', MagicMock(name="save"))
    def test_my_form_view_with_client(self):
        # Use Client instead of RequestFactory.
        self.client = Client()

        # Login with Client.
        self.client.login(username='username', password='password')

        # Set up form data.
        form_data = {'something': 'something'}

        # Get/set session.
        session = self.client.session
        session['somekey'] = 'test'
        session.save()

        # Get response with Client.
        response = self.client.post('/my-form-url/', form_data)
        self.assertEqual(response.status_code, 200)

        # If model form you can do 
        self.assertTrue(ModelName.save.called)

Answer 1

您应该做的第一件事是为书籍定义数据结构。类似的东西：

struct Book {
    std::string name;
    std::string author;
    std::string ISBN;
}

然后你可以重载输入和输出操作符

std::ostream& operator<<( std::ostream &o, const Book& b) { 
     o << b.name;
     o << b.author;
     o << b.ISBN;
     return output;            
}

和

std::istream& operator>>( std::istream& in, Book& b ) { 
     in >> b.name;
     in >> b.author;
     in >> b.ISBN;
     return in;            
}

完成此操作后，您可以使用任何输入流或输出流（例如std::cout / std::cin或ifstream）来读取/写入图书，例如

Book b;
std::cin >> b;
std::cout << b << std::endl;

其实你的问题太宽泛了，我只能给你一些提示。你必须从你的讲座或一些书中学到这一切。但是，如果我是一名教师，以上是我将要讲的关于C ++的第一件事。

如何在此实现搜索？

1 个答案: