Start on new constructed inventory API view

Make the GET function work at most basic level

Basic functionality of updating working

Add functional test for the GET and PATCH views

Add constructed inventory list view for direct creation

Add limit field to constructed inventory serializer

awx/main/tests/functional/api/test_inventory.py

@@ -594,3 +594,45 @@ class TestControlledBySCM:
             rando,
             expect=403,
         )
+
+
+@pytest.mark.django_db
+class TestConstructedInventory:
+    @pytest.fixture
+    def constructed_inventory(self, organization):
+        return Inventory.objects.create(name='constructed-test-inventory', kind='constructed', organization=organization)
+
+    def test_get_constructed_inventory(self, constructed_inventory, admin_user, get):
+        inv_src = constructed_inventory.inventory_sources.first()
+        inv_src.update_cache_timeout = 53
+        inv_src.save(update_fields=['update_cache_timeout'])
+        r = get(url=reverse('api:constructed_inventory_detail', kwargs={'pk': constructed_inventory.pk}), user=admin_user, expect=200)
+        assert r.data['update_cache_timeout'] == 53
+
+    def test_patch_constructed_inventory(self, constructed_inventory, admin_user, patch):
+        inv_src = constructed_inventory.inventory_sources.first()
+        assert inv_src.update_cache_timeout == 0
+        assert inv_src.limit == ''
+        r = patch(
+            url=reverse('api:constructed_inventory_detail', kwargs={'pk': constructed_inventory.pk}),
+            data=dict(update_cache_timeout=54, limit='foobar'),
+            user=admin_user,
+            expect=200,
+        )
+        assert r.data['update_cache_timeout'] == 54
+        inv_src = constructed_inventory.inventory_sources.first()
+        assert inv_src.update_cache_timeout == 54
+        assert inv_src.limit == 'foobar'
+
+    def test_create_constructed_inventory(self, constructed_inventory, admin_user, post, organization):
+        r = post(
+            url=reverse('api:constructed_inventory_list'),
+            data=dict(name='constructed-inventory-just-created', kind='constructed', organization=organization.id, update_cache_timeout=55, limit='foobar'),
+            user=admin_user,
+            expect=201,
+        )
+        pk = r.data['id']
+        constructed_inventory = Inventory.objects.get(pk=pk)
+        inv_src = constructed_inventory.inventory_sources.first()
+        assert inv_src.update_cache_timeout == 55
+        assert inv_src.limit == 'foobar'