Test that data volumes now survive a crash when recreating

Signed-off-by: Aanand Prasad <[email protected]>

tests/integration/resilience_test.py

@@ -0,0 +1,37 @@
+from __future__ import unicode_literals
+from __future__ import absolute_import
+
+import mock
+
+from compose.project import Project
+from .testcases import DockerClientTestCase
+
+
+class ResilienceTest(DockerClientTestCase):
+    def test_recreate_fails(self):
+        db = self.create_service('db', volumes=['/var/db'], command='top')
+        project = Project('composetest', [db], self.client)
+
+        container = db.create_container()
+        db.start_container(container)
+        host_path = container.get('Volumes')['/var/db']
+
+        project.up()
+        container = db.containers()[0]
+        self.assertEqual(container.get('Volumes')['/var/db'], host_path)
+
+        with mock.patch('compose.service.Service.create_container', crash):
+            with self.assertRaises(Crash):
+                project.up()
+
+        project.up()
+        container = db.containers()[0]
+        self.assertEqual(container.get('Volumes')['/var/db'], host_path)
+
+
+class Crash(Exception):
+    pass
+
+
+def crash(*args, **kwargs):
+    raise Crash()