我需要完整的图书管理系统单元测试源代码

很抱歉，由于图书管理系统是一个具体的项目，单元测试的源代码会因具体项目而异。我可以给您提供一个基本的单元测试框架，您可以根据具体的项目需求进行修改和完善。

import unittest
from book_management_system import Book, User, Library

class TestBook(unittest.TestCase):
    def setUp(self):
        self.book = Book("123456", "The Lord of the Rings", "J.R.R. Tolkien", "Fantasy")

    def test_book_info(self):
        self.assertEqual(self.book.book_info(), "123456 - The Lord of the Rings by J.R.R. Tolkien (Genre: Fantasy)")

    def test_check_out(self):
        self.book.check_out()
        self.assertTrue(self.book.checked_out)

    def test_check_in(self):
        self.book.check_in()
        self.assertFalse(self.book.checked_out)

class TestUser(unittest.TestCase):
    def setUp(self):
        self.user = User("001", "John Smith")

    def test_user_info(self):
        self.assertEqual(self.user.user_info(), "001 - John Smith")

    def test_borrow_book(self):
        self.user.borrow_book("123456")
        self.assertEqual(self.user.borrowed_books, ["123456"])

    def test_return_book(self):
        self.user.return_book("123456")
        self.assertEqual(self.user.borrowed_books, [])

class TestLibrary(unittest.TestCase):
    def setUp(self):
        self.library = Library()
        self.book = Book("123456", "The Lord of the Rings", "J.R.R. Tolkien", "Fantasy")
        self.user = User("001", "John Smith")

    def test_add_book(self):
        self.library.add_book(self.book)
        self.assertEqual(self.library.books, {"123456": self.book})

    def test_remove_book(self):
        self.library.remove_book("123456")
        self.assertEqual(self.library.books, {})

    def test_register_user(self):
        self.library.register_user(self.user)
        self.assertEqual(self.library.users, {"001": self.user})

    def test_unregister_user(self):
        self.library.unregister_user("001")
        self.assertEqual(self.library.users, {})

    def test_check_out_book(self):
        self.library.add_book(self.book)
        self.library.register_user(self.user)
        self.library.check_out_book("123456", "001")
        self.assertTrue(self.book.checked_out)
        self.assertEqual(self.user.borrowed_books, ["123456"])

    def test_check_in_book(self):
        self.library.add_book(self.book)
        self.library.register_user(self.user)
        self.library.check_out_book("123456", "001")
        self.library.check_in_book("123456", "001")
        self.assertFalse(self.book.checked_out)
        self.assertEqual(self.user.borrowed_books, [])

if __name__ == '__main__':
    unittest.main()

上述代码是一个简单的图书管理系统的单元测试框架，包括了对于 Book、User 和 Library 三个类的测试用例。您可以根据需要进行修改和完善，例如添加更多的测试用例，或者对于具体的项目进行适当的调整。