Fix generating pytest for training service

services/training/tests/test_ml.py

@@ -25,13 +25,16 @@ class TestBakeryDataProcessor:
     
     @pytest.fixture
     def sample_sales_data(self):
-        """Create sample sales data"""
-        dates = pd.date_range('2024-01-01', periods=60, freq='D')
-        return pd.DataFrame({
-            'date': dates,
-            'product_name': ['Pan Integral'] * 60,
-            'quantity': [45 + np.random.randint(-10, 11) for _ in range(60)]
-        })
+        """Provide sufficient data for ML training tests"""
+        dates = pd.date_range('2024-01-01', periods=35, freq='D')  # 35 days > 30 minimum
+        data = []
+        for date in dates:
+            data.append({
+                'date': date,
+                'product_name': 'Pan Integral',  # Ensure this column exists
+                'quantity': 40 + (5 * np.sin(date.dayofyear / 365 * 2 * np.pi))  # Seasonal pattern
+            })
+        return pd.DataFrame(data)
     
     @pytest.fixture
     def sample_weather_data(self):