fix: removed over-nesting in resources file and added test (#498)

* Removed over-nesting in resources file and added test

* Update test_diagram.py

updated doc string of test function

docs/nodes/openstack.md

@@ -5,9 +5,6 @@ title: OpenStack
 
 Node classes list of openstack provider.
 
-## openstack.adjacentenablers
-
-
 ## openstack.apiproxies
 
 - **diagrams.openstack.apiproxies.EC2API**
@@ -51,9 +48,6 @@ Node classes list of openstack provider.
 
 - **diagrams.openstack.frontend.Horizon**
 
-## openstack.lifecyclemanagement
-
-
 ## openstack.monitoring
 
 - **diagrams.openstack.monitoring.Monasca**
@@ -73,9 +67,6 @@ Node classes list of openstack provider.
 
 - **diagrams.openstack.nfv.Tacker**
 
-## openstack.operations
-
-
 ## openstack.optimization
 
 - **diagrams.openstack.optimization.Congress**

tests/test_diagram.py

@@ -1,6 +1,7 @@
 import os
 import shutil
 import unittest
+import pathlib
 
 from diagrams import Cluster, Diagram, Edge, Node
 from diagrams import getcluster, getdiagram, setcluster, setdiagram
@@ -283,3 +284,16 @@ class EdgeTest(unittest.TestCase):
                 self.assertEqual(
                     nodes << Edge(color="green", label="6.3") << Edge(color="pink", label="6.4") << node1, node1
                 )
+
+
+class ResourcesTest(unittest.TestCase):
+    def test_folder_depth(self):
+        """
+        The code currently only handles resource folders up to a dir depth of 2
+        i.e. resources/<provider>/<type>/<image>, so check that this depth isn't
+        exceeded.
+        """
+        resources_dir = pathlib.Path(__file__).parent.parent / 'resources'
+        max_depth = max(os.path.relpath(d, resources_dir).count(os.sep) + 1
+                        for d, _, _ in os.walk(resources_dir))
+        self.assertLessEqual(max_depth, 2)