Add support for creating internal networks

Signed-off-by: Jonathan Giannuzzi <jonathan@giannuzzi.be>

tests/acceptance/cli_test.py

@@ -576,6 +576,24 @@ class CLITestCase(DockerClientTestCase):
         assert 'forward_facing' in front_aliases
         assert 'ahead' in front_aliases
 
+    @v2_only()
+    def test_up_with_network_internal(self):
+        self.require_api_version('1.23')
+        filename = 'network-internal.yml'
+        self.base_dir = 'tests/fixtures/networks'
+        self.dispatch(['-f', filename, 'up', '-d'], None)
+        internal_net = '{}_internal'.format(self.project.name)
+
+        networks = [
+            n for n in self.client.networks()
+            if n['Name'].startswith('{}_'.format(self.project.name))
+        ]
+
+        # One network was created: internal
+        assert sorted(n['Name'] for n in networks) == [internal_net]
+
+        assert networks[0]['Internal'] is True
+
     @v2_only()
     def test_up_with_network_static_addresses(self):
         filename = 'network-static-addresses.yml'

tests/fixtures/networks/network-internal.yml

@@ -0,0 +1,13 @@
+version: "2"
+
+services:
+  web:
+    image: busybox
+    command: top
+    networks:
+      - internal
+
+networks:
+  internal:
+    driver: bridge
+    internal: True

tests/integration/project_test.py

@@ -756,6 +756,33 @@ class ProjectTest(DockerClientTestCase):
         with self.assertRaises(ProjectError):
             project.up()
 
+    @v2_only()
+    def test_project_up_with_network_internal(self):
+        self.require_api_version('1.23')
+        config_data = config.Config(
+            version=V2_0,
+            services=[{
+                'name': 'web',
+                'image': 'busybox:latest',
+                'networks': {'internal': None},
+            }],
+            volumes={},
+            networks={
+                'internal': {'driver': 'bridge', 'internal': True},
+            },
+        )
+
+        project = Project.from_config(
+            client=self.client,
+            name='composetest',
+            config_data=config_data,
+        )
+        project.up()
+
+        network = self.client.networks(names=['composetest_internal'])[0]
+
+        assert network['Internal'] is True
+
     @v2_only()
     def test_project_up_volumes(self):
         vol_name = '{0:x}'.format(random.getrandbits(32))

tests/unit/config/config_test.py

@@ -101,6 +101,10 @@ class ConfigTest(unittest.TestCase):
                                 {'subnet': '172.28.0.0/16'}
                             ]
                         }
+                    },
+                    'internal': {
+                        'driver': 'bridge',
+                        'internal': True
                     }
                 }
             }, 'working_dir', 'filename.yml')
@@ -140,6 +144,10 @@ class ConfigTest(unittest.TestCase):
                         {'subnet': '172.28.0.0/16'}
                     ]
                 }
+            },
+            'internal': {
+                'driver': 'bridge',
+                'internal': True
             }
         })