1 files changed, 19 insertions, 1 deletions
diff --git a/morphlib/builder2_tests.py b/morphlib/builder2_tests.py
index 9730b59e..5a86fe75 100644
--- a/morphlib/builder2_tests.py
+++ b/morphlib/builder2_tests.py
@@ -80,9 +80,15 @@ class FakeFileHandle(object):
     def __enter__(self):
         return self
 
-    def __exit__(self, type, value, traceback):
+    def _writeback(self):
         self._cache._cached[self._key] = self._string
 
+    def __exit__(self, type, value, traceback):
+        self._writeback()
+
+    def close(self):
+        self._writeback()
+
     def write(self, string):
         self._string += string
 
@@ -209,6 +215,18 @@ class BuilderBaseTests(unittest.TestCase):
         self.assertEqual(sorted(events),
                          sorted(meta['build-times'].keys()))
 
+    def test_downloads_depends(self):
+        lac = FakeArtifactCache()
+	rac = FakeArtifactCache()
+	afacts = [FakeArtifact(name) for name in ('a', 'b', 'c')]
+	for a in afacts:
+            fh = rac.put(a)
+            fh.write(a.name)
+            fh.close()
+	morphlib.builder2.download_depends(afacts, lac, rac)
+        self.assertTrue(all(lac.has(a) for a in afacts))
+
+
 class ChunkBuilderTests(unittest.TestCase):
 
     def setUp(self):