Implement user-specific question numbering and update database schema. Added triggers for automatic question numbering and adjustments upon deletion. Enhanced CRUD operations to manage user_question_number effectively.

tests/unit/models/test_user_example.py

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+"""
+Пример теста для модели User
+
+Этот файл демонстрирует, как должны выглядеть реальные тесты.
+Остальные файлы содержат только заглушки с TODO комментариями.
+"""
+import pytest
+from datetime import datetime
+from models.user import User, escape_html
+
+
+class TestUserExample:
+    """Пример тестов для модели User"""
+    
+    def test_user_creation_basic(self):
+        """Тест базового создания пользователя"""
+        # Arrange
+        telegram_id = 123456789
+        first_name = "Test"
+        chat_id = 123456789
+        profile_link = "test_link"
+        
+        # Act
+        user = User(
+            telegram_id=telegram_id,
+            first_name=first_name,
+            chat_id=chat_id,
+            profile_link=profile_link
+        )
+        
+        # Assert
+        assert user.telegram_id == telegram_id
+        assert user.first_name == first_name
+        assert user.chat_id == chat_id
+        assert user.profile_link == profile_link
+        assert user.is_active is True
+        assert user.is_superuser is False
+        assert user.created_at is not None
+        assert user.updated_at is not None
+    
+    def test_user_creation_with_all_fields(self):
+        """Тест создания пользователя со всеми полями"""
+        # Arrange
+        telegram_id = 123456789
+        username = "testuser"
+        first_name = "Test"
+        last_name = "User"
+        chat_id = 123456789
+        profile_link = "test_link"
+        is_active = True
+        is_superuser = False
+        created_at = datetime.now()
+        updated_at = datetime.now()
+        banned_until = None
+        ban_reason = None
+        
+        # Act
+        user = User(
+            telegram_id=telegram_id,
+            username=username,
+            first_name=first_name,
+            last_name=last_name,
+            chat_id=chat_id,
+            profile_link=profile_link,
+            is_active=is_active,
+            is_superuser=is_superuser,
+            created_at=created_at,
+            updated_at=updated_at,
+            banned_until=banned_until,
+            ban_reason=ban_reason
+        )
+        
+        # Assert
+        assert user.telegram_id == telegram_id
+        assert user.username == username
+        assert user.first_name == first_name
+        assert user.last_name == last_name
+        assert user.chat_id == chat_id
+        assert user.profile_link == profile_link
+        assert user.is_active == is_active
+        assert user.is_superuser == is_superuser
+        assert user.created_at == created_at
+        assert user.updated_at == updated_at
+        assert user.banned_until == banned_until
+        assert user.ban_reason == ban_reason
+    
+    def test_user_validation_telegram_id_positive(self):
+        """Тест валидации положительного Telegram ID"""
+        # Arrange
+        telegram_id = 123456789
+        
+        # Act
+        user = User(
+            telegram_id=telegram_id,
+            first_name="Test",
+            chat_id=123456789,
+            profile_link="test_link"
+        )
+        
+        # Assert
+        assert user.telegram_id == telegram_id
+        assert user.telegram_id > 0
+    
+    def test_user_display_name_with_username(self):
+        """Тест метода get_display_name с username"""
+        # Arrange
+        user = User(
+            telegram_id=123456789,
+            username="testuser",
+            first_name="Test",
+            last_name="User",
+            chat_id=123456789,
+            profile_link="test_link"
+        )
+        
+        # Act
+        display_name = user.get_display_name()
+        
+        # Assert
+        assert display_name == "@testuser"
+    
+    def test_user_display_name_without_username(self):
+        """Тест метода get_display_name без username"""
+        # Arrange
+        user = User(
+            telegram_id=123456789,
+            first_name="Test",
+            last_name="User",
+            chat_id=123456789,
+            profile_link="test_link"
+        )
+        
+        # Act
+        display_name = user.get_display_name()
+        
+        # Assert
+        assert display_name == "Test User"
+    
+    def test_user_display_name_first_name_only(self):
+        """Тест метода get_display_name только с first_name"""
+        # Arrange
+        user = User(
+            telegram_id=123456789,
+            first_name="Test",
+            chat_id=123456789,
+            profile_link="test_link"
+        )
+        
+        # Act
+        display_name = user.get_display_name()
+        
+        # Assert
+        assert display_name == "Test"
+    
+    def test_user_profile_link_generation(self):
+        """Тест генерации ссылки профиля"""
+        # Arrange
+        user = User(
+            telegram_id=123456789,
+            first_name="Test",
+            chat_id=123456789,
+            profile_link="test_link"
+        )
+        
+        # Act
+        profile_link = user.get_profile_link()
+        
+        # Assert
+        assert profile_link == "test_link"
+        assert profile_link.startswith("https://t.me/")
+    
+    def test_user_string_representation(self):
+        """Тест строкового представления пользователя"""
+        # Arrange
+        user = User(
+            telegram_id=123456789,
+            username="testuser",
+            first_name="Test",
+            last_name="User",
+            chat_id=123456789,
+            profile_link="test_link"
+        )
+        
+        # Act
+        str_repr = str(user)
+        
+        # Assert
+        assert "User" in str_repr
+        assert "123456789" in str_repr
+        assert "testuser" in str_repr
+
+
+class TestEscapeHtmlExample:
+    """Пример тестов для функции escape_html"""
+    
+    def test_escape_html_basic(self):
+        """Тест базового HTML экранирования"""
+        # Arrange
+        text = "<script>alert('xss')</script>"
+        
+        # Act
+        escaped = escape_html(text)
+        
+        # Assert
+        assert escaped == "&lt;script&gt;alert(&#x27;xss&#x27;)&lt;/script&gt;"
+        assert "<" not in escaped
+        assert ">" not in escaped
+        assert "'" not in escaped
+    
+    def test_escape_html_special_characters(self):
+        """Тест экранирования специальных символов"""
+        # Arrange
+        text = "Test & < > \" '"
+        
+        # Act
+        escaped = escape_html(text)
+        
+        # Assert
+        assert escaped == "Test &amp; &lt; &gt; &quot; &#x27;"
+    
+    def test_escape_html_none_input(self):
+        """Тест обработки None входных данных"""
+        # Arrange
+        text = None
+        
+        # Act
+        escaped = escape_html(text)
+        
+        # Assert
+        assert escaped is None
+    
+    def test_escape_html_empty_string(self):
+        """Тест обработки пустой строки"""
+        # Arrange
+        text = ""
+        
+        # Act
+        escaped = escape_html(text)
+        
+        # Assert
+        assert escaped == ""
+    
+    def test_escape_html_already_escaped(self):
+        """Тест обработки уже экранированного текста"""
+        # Arrange
+        text = "&lt;script&gt;"
+        
+        # Act
+        escaped = escape_html(text)
+        
+        # Assert
+        assert escaped == "&amp;lt;script&amp;gt;"