Add documentation for frontend testing methodologies

Author: Kirandawadi

docs/test/frontend_testing_methodologies.md

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+# Frontend Testing Methodologies for Django Projects
+## Overview
+
+This document outlines testing methodologies for Django projects with HTML forms and JavaScript enhancements, focusing on Python-based testing solutions. While going through the codebase, I can see it is primarily a JavaScript-heavy frontend that uses plain HTML forms enhanced with JavaScript/jQuery rather than server-rendered Django forms. Django forms are being used only in the admin panel of the project.
+
+## Primary Testing Tools
+
+### 1. Selenium with Python (Chosen)
+
+#### Capabilities
+- Full browser automation
+- JavaScript execution support
+- Real DOM interaction
+- Cross-browser testing
+- Modal dialog handling
+- AJAX request testing
+- File upload testing
+- DataTables interaction
+
+#### Implementation
+```python
+from selenium import webdriver
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.support import expected_conditions as EC
+
+class TestCollectionDetail:
+    def setup_method(self):
+        self.driver = webdriver.Chrome()
+        self.wait = WebDriverWait(self.driver, 10)
+
+    def test_title_change_modal(self):
+        # Example test for title change modal
+        self.driver.get("/collections/1/")
+        title_button = self.wait.until(
+            EC.element_to_be_clickable((By.ID, "change-title-btn"))
+        )
+        title_button.click()
+        
+        modal = self.wait.until(
+            EC.visibility_of_element_located((By.ID, "title-modal"))
+        )
+        
+        form = modal.find_element(By.TAG_NAME, "form")
+        input_field = form.find_element(By.NAME, "title")
+        input_field.send_keys("New Title")
+        form.submit()
+        
+        # Wait for AJAX completion
+        self.wait.until(
+            EC.text_to_be_present_in_element((By.ID, "collection-title"), "New Title")
+        )
+```
+
+#### Pros
+- Complete end-to-end testing
+- Real browser interaction
+- JavaScript support
+- Comprehensive API
+- Strong community support
+
+#### Drawbacks
+- Slower execution
+- Browser dependencies
+- More complex setup
+- Can be flaky with timing issues
+
+### 2. pytest-django with django-test-client
+
+#### Capabilities
+- Form submission testing
+- Response validation
+- Header verification
+- Status code checking
+- Session handling
+- Template rendering testing
+
+#### Implementation
+```python
+import pytest
+from django.urls import reverse
+
+@pytest.mark.django_db
+class TestCollectionForms:
+    def test_collection_create(self, client):
+        url = reverse('collection_create')
+        data = {
+            'title': 'Test Collection',
+            'division': 'division1',
+            'workflow_status': 'active'
+        }
+        response = client.post(url, data)
+        assert response.status_code == 302  # Redirect after success
+        
+        # Verify creation
+        response = client.get(reverse('collection_detail', kwargs={'pk': 1}))
+        assert 'Test Collection' in response.content.decode()
+```
+
+#### Pros
+- Fast execution
+- No browser dependency
+- Simpler setup
+- Integrated with Django
+
+#### Drawbacks
+- **No JavaScript support (Dealbreaker)**
+- Limited DOM interaction
+- Can't test real user interactions
+
+### 3. Playwright for Python
+
+#### Capabilities
+- Modern browser automation
+- Async/await support
+- Network interception
+- Mobile device emulation
+- Automatic waiting
+- Screenshot and video capture
+
+#### Implementation
+```python
+from playwright.sync_api import sync_playwright
+
+def test_modal_form_submission():
+    with sync_playwright() as p:
+        browser = p.chromium.launch()
+        page = browser.new_page()
+        
+        page.goto("/collections/")
+        
+        # Click button to open modal
+        page.click("#add-collection-btn")
+        
+        # Fill form in modal
+        page.fill("#title-input", "New Collection")
+        page.fill("#division-input", "Division A")
+        
+        # Submit form
+        page.click("#submit-btn")
+        
+        # Wait for success message
+        success_message = page.wait_for_selector(".toast-success")
+        assert "Collection created" in success_message.text_content()
+        
+        browser.close()
+```
+
+#### Pros
+- Modern API design
+- Better stability than Selenium
+- Built-in async support
+- Powerful debugging tools
+
+#### Drawbacks
+- **Newer tool, smaller community (Dealbreaker)**
+- Additional system dependencies
+- Learning curve for async features
+
+
+### 4. Beautiful Soup with Requests
+A combination for testing HTML structure and content.
+
+**Capabilities:**
+- HTML parsing and validation
+- Content extraction
+- Structure verification
+- Link checking
+- Form field validation
+- Template testing
+
+**Pros:**
+- Lightweight solution
+- Flexible HTML parsing
+- No browser dependency
+- Fast execution
+- Simple API
+- Low resource usage
+
+**Drawbacks:**
+- **No JavaScript support (Dealbreaker)**
+- Limited interaction testing
+- No visual testing
+- Basic functionality only
+- No real browser simulation
+
+## Testing Strategy Recommendations
+
+1. **Primary Testing Tool**: Selenium with Python
+   - Best suited for your JavaScript-heavy interface
+   - Handles modals and AJAX naturally
+   - Extensive documentation and community support
+
+2. **Test Coverage Areas**:
+   - Modal form interactions
+   - AJAX submissions
+   - DataTables functionality
+   - Form validation
+   - Success/error messages
+   - URL routing
+   - DOM updates
+
+## Implementation Steps
+
+1. Set up testing environment:
+```bash
+pip install selenium pytest pytest-django
+```
+
+2. Create base test classes:
+```python
+import pytest
+from selenium import webdriver
+
+class BaseUITest:
+    @pytest.fixture(autouse=True)
+    def setup_class(self):
+        self.driver = webdriver.Chrome()
+        yield
+        self.driver.quit()
+
+    def login(self):
+        # Common login logic
+        pass
+```
+
+3. Organize tests by feature:
+```python
+class TestCollectionManagement(BaseUITest):
+    def test_create_collection(self):
+        pass
+
+    def test_edit_collection(self):
+        pass
+
+class TestURLPatterns(BaseUITest):
+    def test_add_include_pattern(self):
+        pass
+```