Merge pull request #460 from dnephin/fix_tests_for_docker_1.1

Fix test failures on docker 1.1.2

fig/container.py

@@ -67,7 +67,7 @@ class Container(object):
     @property
     def ports(self):
         self.inspect_if_not_inspected()
-        return self.dictionary['NetworkSettings']['Ports'] or {}
+        return self.get('NetworkSettings.Ports') or {}
 
     @property
     def human_readable_ports(self):
@@ -82,33 +82,35 @@ class Container(object):
 
     @property
     def human_readable_state(self):
-        self.inspect_if_not_inspected()
-        if self.dictionary['State']['Running']:
-            if self.dictionary['State'].get('Ghost'):
-                return 'Ghost'
-            else:
-                return 'Up'
+        if self.is_running:
+            return 'Ghost' if self.get('State.Ghost') else 'Up'
         else:
-            return 'Exit %s' % self.dictionary['State']['ExitCode']
+            return 'Exit %s' % self.get('State.ExitCode')
 
     @property
     def human_readable_command(self):
-        self.inspect_if_not_inspected()
-        if self.dictionary['Config']['Cmd']:
-            return ' '.join(self.dictionary['Config']['Cmd'])
-        else:
-            return ''
+        return ' '.join(self.get('Config.Cmd') or '')
 
     @property
     def environment(self):
-        self.inspect_if_not_inspected()
-        return dict(var.split("=", 1)
-                    for var in self.dictionary.get('Config', {}).get('Env', []))
+        return dict(var.split("=", 1) for var in self.get('Config.Env') or [])
 
     @property
     def is_running(self):
+        return self.get('State.Running')
+
+    def get(self, key):
+        """Return a value from the container or None if the value is not set.
+
+        :param key: a string using dotted notation for nested dictionary
+                    lookups
+        """
         self.inspect_if_not_inspected()
-        return self.dictionary['State']['Running']
+
+        def get_value(dictionary, key):
+            return (dictionary or {}).get(key)
+
+        return reduce(get_value, key.split('.'), self.dictionary)
 
     def get_local_port(self, port, protocol='tcp'):
         port = self.ports.get("%s/%s" % (port, protocol))

fig/service.py

@@ -205,6 +205,10 @@ class Service(object):
             return tuples
 
     def recreate_container(self, container, **override_options):
+        """Recreate a container. An intermediate container is created so that
+        the new container has the same name, while still supporting
+        `volumes-from` the original container.
+        """
         try:
             container.stop()
         except APIError as e:

tests/integration/project_test.py

@@ -94,7 +94,7 @@ class ProjectTest(DockerClientTestCase):
 
     def test_project_up_recreates_containers(self):
         web = self.create_service('web')
-        db = self.create_service('db', volumes=['/var/db'])
+        db = self.create_service('db', volumes=['/etc'])
         project = Project('figtest', [web, db], self.client)
         project.start()
         self.assertEqual(len(project.containers()), 0)
@@ -102,15 +102,14 @@ class ProjectTest(DockerClientTestCase):
         project.up(['db'])
         self.assertEqual(len(project.containers()), 1)
         old_db_id = project.containers()[0].id
-        db_volume_path = project.containers()[0].inspect()['Volumes']['/var/db']
+        db_volume_path = project.containers()[0].get('Volumes./etc')
 
         project.up()
         self.assertEqual(len(project.containers()), 2)
 
         db_container = [c for c in project.containers() if 'db' in c.name][0]
         self.assertNotEqual(db_container.id, old_db_id)
-        self.assertEqual(db_container.inspect()['Volumes']['/var/db'],
-                         db_volume_path)
+        self.assertEqual(db_container.get('Volumes./etc'), db_volume_path)
 
         project.kill()
         project.remove_stopped()

tests/integration/service_test.py

@@ -107,14 +107,16 @@ class ServiceTest(DockerClientTestCase):
         host_service = self.create_service('host', volumes_from=[volume_service, volume_container_2])
         host_container = host_service.create_container()
         host_service.start_container(host_container)
-        self.assertIn(volume_container_1.id, host_container.inspect()['HostConfig']['VolumesFrom'])
-        self.assertIn(volume_container_2.id, host_container.inspect()['HostConfig']['VolumesFrom'])
+        self.assertIn(volume_container_1.id,
+                      host_container.get('HostConfig.VolumesFrom'))
+        self.assertIn(volume_container_2.id,
+                      host_container.get('HostConfig.VolumesFrom'))
 
     def test_recreate_containers(self):
         service = self.create_service(
             'db',
             environment={'FOO': '1'},
-            volumes=['/var/db'],
+            volumes=['/etc'],
             entrypoint=['sleep'],
             command=['300']
         )
@@ -124,7 +126,7 @@ class ServiceTest(DockerClientTestCase):
         self.assertIn('FOO=1', old_container.dictionary['Config']['Env'])
         self.assertEqual(old_container.name, 'figtest_db_1')
         service.start_container(old_container)
-        volume_path = old_container.inspect()['Volumes']['/var/db']
+        volume_path = old_container.inspect()['Volumes']['/etc']
 
         num_containers_before = len(self.client.containers(all=True))
 
@@ -140,7 +142,7 @@ class ServiceTest(DockerClientTestCase):
         self.assertEqual(new_container.dictionary['Config']['Cmd'], ['300'])
         self.assertIn('FOO=2', new_container.dictionary['Config']['Env'])
         self.assertEqual(new_container.name, 'figtest_db_1')
-        self.assertEqual(new_container.inspect()['Volumes']['/var/db'], volume_path)
+        self.assertEqual(new_container.inspect()['Volumes']['/etc'], volume_path)
         self.assertIn(intermediate_container.id, new_container.dictionary['HostConfig']['VolumesFrom'])
 
         self.assertEqual(len(self.client.containers(all=True)), num_containers_before)
@@ -340,18 +342,18 @@ class ServiceTest(DockerClientTestCase):
 
     def test_network_mode_none(self):
         service = self.create_service('web', net='none')
-        container = service.start_container().inspect()
-        self.assertEqual(container['HostConfig']['NetworkMode'], 'none')
+        container = service.start_container()
+        self.assertEqual(container.get('HostConfig.NetworkMode'), 'none')
 
     def test_network_mode_bridged(self):
         service = self.create_service('web', net='bridge')
-        container = service.start_container().inspect()
-        self.assertEqual(container['HostConfig']['NetworkMode'], 'bridge')
+        container = service.start_container()
+        self.assertEqual(container.get('HostConfig.NetworkMode'), 'bridge')
 
     def test_network_mode_host(self):
         service = self.create_service('web', net='host')
-        container = service.start_container().inspect()
-        self.assertEqual(container['HostConfig']['NetworkMode'], 'host')
+        container = service.start_container()
+        self.assertEqual(container.get('HostConfig.NetworkMode'), 'host')
 
     def test_dns_single_value(self):
         service = self.create_service('web', dns='8.8.8.8')

tests/unit/container_test.py

@@ -105,3 +105,15 @@ class ContainerTest(unittest.TestCase):
         self.assertEqual(
             container.get_local_port(45454, protocol='tcp'),
             '0.0.0.0:49197')
+
+    def test_get(self):
+        container = Container(None, {
+            "Status":"Up 8 seconds",
+            "HostConfig": {
+                "VolumesFrom": ["volume_id",]
+            },
+        }, has_been_inspected=True)
+
+        self.assertEqual(container.get('Status'), "Up 8 seconds")
+        self.assertEqual(container.get('HostConfig.VolumesFrom'), ["volume_id",])
+        self.assertEqual(container.get('Foo.Bar.DoesNotExist'), None)