Add an acceptance test for bundle.

Signed-off-by: Daniel Nephin <dnephin@docker.com>

compose/bundle.py

@@ -136,7 +136,7 @@ def fetch_image_digest(service):
     repo, _, _ = parse_repository_tag(service.options['image'])
     identifier = '{repo}@{digest}'.format(repo=repo, digest=digest)
 
-    # only do this is RepoTags isn't already populated
+    # only do this if RepoDigests isn't already populated
     image = service.image()
     if not image['RepoDigests']:
         # Pull by digest so that image['RepoDigests'] is populated for next time

tests/acceptance/cli_test.py

@@ -12,6 +12,7 @@
 from collections import namedtuple
 from operator import attrgetter
 
+import py
 import yaml
 from docker import errors
 
@@ -378,6 +379,32 @@ def test_build_failed_forcerm(self):
         ]
         assert not containers
 
+    def test_bundle_with_digests(self):
+        self.base_dir = 'tests/fixtures/bundle-with-digests/'
+        tmpdir = py.test.ensuretemp('cli_test_bundle')
+        self.addCleanup(tmpdir.remove)
+        filename = str(tmpdir.join('example.dab'))
+
+        self.dispatch(['bundle', '--output', filename])
+        with open(filename, 'r') as fh:
+            bundle = json.load(fh)
+
+        assert bundle == {
+            'Version': '0.1',
+            'Services': {
+                'web': {
+                    'Image': ('dockercloud/hello-world@sha256:fe79a2cfbd17eefc3'
+                              '44fb8419420808df95a1e22d93b7f621a7399fd1e9dca1d'),
+                    'Networks': ['default'],
+                },
+                'redis': {
+                    'Image': ('redis@sha256:a84cb8f53a70e19f61ff2e1d5e73fb7ae62d'
+                              '374b2b7392de1e7d77be26ef8f7b'),
+                    'Networks': ['default'],
+                }
+            },
+        }
+
     def test_create(self):
         self.dispatch(['create'])
         service = self.project.get_service('simple')

tests/fixtures/bundle-with-digests/docker-compose.yml

@@ -0,0 +1,9 @@
+
+version: '2.0'
+
+services:
+  web:
+    image: dockercloud/hello-world@sha256:fe79a2cfbd17eefc344fb8419420808df95a1e22d93b7f621a7399fd1e9dca1d
+
+  redis:
+    image: redis@sha256:a84cb8f53a70e19f61ff2e1d5e73fb7ae62d374b2b7392de1e7d77be26ef8f7b