tdd-workflows-tdd-greenlisted

# Green Phase: Simple function def product_list(request): products = Product.objects.all() return JsonResponse({'products': list(products.values())}) # Refactor: Class-based view class ProductListView(View): def get(self, request): products = Product.objects.all() return JsonResponse({'products': list(products.values())}) # Refactor: Generic view class ProductListView(ListView): model = Product context_object_name = 'products' ``` ### Express Patterns **Inline → Middleware → Service Layer:** ```javascript // Green Phase: Inline logic app.post('/api/users', (req, res) => { const user = { id: Date.now(), ...req.body }; users.push(user); res.json(user); }); // Refactor: Extract middleware app.post('/api/users', validateUser, (req, res) => { const user = userService.create(req.body); res.json(user); }); // Refactor: Full layering app.post('/api/users', validateUser, asyncHandler(userController.create) ); ``` ## Use this skill when - Moving from red to green in a TDD cycle - Implementing minimal behavior to satisfy tests - You want to keep implementation intentionally simple ## Do not use this skill when - You are refactoring for design or performance - Tests are already passing and you need new requirements - You need a full architectural redesign ## Instructions 1. Review failing tests and identify the smallest fix. 2. Implement the minimal change to pass the next test. 3. Run tests after each change to confirm progre