Add (simple) test cases for Stock API

- Still a lot of work to do here

InvenTree/stock/test_api.py

@@ -0,0 +1,65 @@
+from rest_framework.test import APITestCase
+from rest_framework import status
+from django.urls import reverse
+from django.contrib.auth import get_user_model
+
+from .models import StockLocation, StockItem
+
+
+class StockLocationTest(APITestCase):
+    """ 
+    Series of API tests for the StockLocation API
+    """
+    list_url = reverse('api-location-list')
+
+    def setUp(self):
+        # Create a user for auth
+        User = get_user_model()
+        User.objects.create_user('testuser', 'test@testing.com', 'password')
+        self.client.login(username='testuser', password='password')
+
+        # Add some stock locations
+        StockLocation.objects.create(name='top', description='top category')
+
+    def test_list(self):
+        # Check that we can request the StockLocation list
+        response = self.client.get(self.list_url, format='json')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertGreaterEqual(len(response.data), 1)
+
+    def test_add(self):
+        # Check that we can add a new StockLocation
+        data = {
+            'parent': 1,
+            'name': 'Location',
+            'description': 'Another location for stock'
+        }
+        response = self.client.post(self.list_url, data, format='json')
+        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+
+
+class StockItemTest(APITestCase):
+    """
+    Series of API tests for the StockItem API
+    """
+
+    list_url = reverse('api-stock-list')
+
+    def detail_url(self, pk):
+        return revere('api-stock-detail', kwargs={'pk': pk})
+
+    def setUp(self):
+        # Create a user for auth
+        User = get_user_model()
+        User.objects.create_user('testuser', 'test@testing.com', 'password')
+        self.client.login(username='testuser', password='password')
+
+        # Create some stock locations
+        top = StockLocation.objects.create(name='A', description='top')
+
+        StockLocation.objects.create(name='B', description='location b', parent=top)
+        StockLocation.objects.create(name='C', description='location c', parent=top)
+
+    def test_get_stock_list(self):
+        response = self.client.get(self.list_url, format='json')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)