Move network_entry function to top level

This change adds some minor testing around the build process for a
network's dictionary. This function may be further refactored in the
future, but this serves as a start for that work.

Change-Id: I63506e863386bd91a59d10530f3e81a444692cf7

playbooks/inventory/dynamic_inventory.py

@@ -526,6 +526,31 @@ def _load_optional_q(config, cidr_name):
     return ip_q
 
 
+def network_entry(is_metal, interface,
+                  bridge=None, net_type=None, net_mtu=None):
+    """Return a network entry for a container."""
+
+    # TODO(cloudnull) After a few releases this conditional should be
+    # simplified. The container address checking that is ssh address
+    # is only being done to support old inventory.
+
+    if is_metal:
+        _network = dict()
+    else:
+        _network = {'interface': interface}
+
+    if bridge:
+        _network['bridge'] = bridge
+
+    if net_type:
+        _network['type'] = net_type
+
+    if net_mtu:
+        _network['mtu'] = net_mtu
+
+    return _network
+
+
 def _add_additional_networks(key, inventory, ip_q, q_name, netmask, interface,
                              bridge, net_type, net_mtu, user_config,
                              is_ssh_address, is_container_address,
@@ -547,28 +572,6 @@ def _add_additional_networks(key, inventory, ip_q, q_name, netmask, interface,
     :param is_container_address: ``bol`` set this address to container_address.
     :param static_routes: ``list`` List containing static route dicts.
     """
-    def network_entry():
-        """Return a network entry for a container."""
-
-        # TODO(cloudnull) After a few releases this conditional should be
-        # simplified. The container address checking that is ssh address
-        # is only being done to support old inventory.
-
-        if is_metal:
-            _network = dict()
-        else:
-            _network = {'interface': interface}
-
-        if bridge:
-            _network['bridge'] = bridge
-
-        if net_type:
-            _network['type'] = net_type
-
-        if net_mtu:
-            _network['mtu'] = net_mtu
-
-        return _network
 
     base_hosts = inventory['_meta']['hostvars']
     lookup = inventory.get(key, list())
@@ -625,7 +628,13 @@ def _add_additional_networks(key, inventory, ip_q, q_name, netmask, interface,
         # This should convert found addresses based on q_name + "_address"
         #  and then build the network if its not found.
         if not is_metal and old_address not in networks:
-            network = networks[old_address] = network_entry()
+            network = networks[old_address] = network_entry(
+                is_metal,
+                interface,
+                bridge,
+                net_type,
+                net_mtu
+            )
             if old_address in container and container[old_address]:
                 network['address'] = container.pop(old_address)
             elif not is_metal:
@@ -635,7 +644,13 @@ def _add_additional_networks(key, inventory, ip_q, q_name, netmask, interface,
 
             network['netmask'] = netmask
         elif is_metal:
-            network = networks[old_address] = network_entry()
+            network = networks[old_address] = network_entry(
+                is_metal,
+                interface,
+                bridge,
+                net_type,
+                net_mtu
+            )
             network['netmask'] = netmask
             if is_ssh_address or is_container_address:
                 # Container physical host group

tests/test_inventory.py

@@ -1029,5 +1029,20 @@ class TestConfigCheckFunctional(TestConfigCheckBase):
         self.assertEqual(context.exception.ip, '172.29.236.100')
 
 
+class TestNetworkEntry(unittest.TestCase):
+    def test_all_args_filled(self):
+        entry = di.network_entry(True, 'eth1', 'br-mgmt', 'my_type', '1700')
+
+        self.assertNotIn('interface', entry.keys())
+        self.assertEqual(entry['bridge'], 'br-mgmt')
+        self.assertEqual(entry['type'], 'my_type')
+        self.assertEqual(entry['mtu'], '1700')
+
+    def test_container_dict(self):
+        entry = di.network_entry(False, 'eth1', 'br-mgmt', 'my_type', '1700')
+
+        self.assertEqual(entry['interface'], 'eth1')
+
+
 if __name__ == '__main__':
     unittest.main()