For selection of boottest candidates, use a list of url formats for downloading the appropriate touch image manifest for a given release.

boottest.py

@@ -69,32 +69,43 @@ class TouchManifest(object):
         self._manifest = self._load()
 
     def __fetch_manifest(self, project, series):
-        url = "http://cdimage.ubuntu.com/{}/daily-preinstalled/" \
+        # There are two url formats that may lead to the proper manifest
-              "pending/{}-preinstalled-touch-armhf.manifest".format(
+        # file. The first form is for series that have been released,
-                  project, series
+        # the second form is for the current development series.
-        )
+        # Only one of these is expected to exist for any given series.
+        url_list = [
+            "http://cdimage.ubuntu.com/{}/{}/daily-preinstalled/pending/" \
+            "{}-preinstalled-touch-armhf.manifest".format(
+                project, series, series),
+            "http://cdimage.ubuntu.com/{}/daily-preinstalled/pending/" \
+            "{}-preinstalled-touch-armhf.manifest".format(
+                project, series),
+        ]
+
         success = False
+        for url in url_list:
             if self.verbose:
-            print(
+                print("I: [%s] - Fetching manifest from %s" %
-                "I: [%s] - Fetching manifest from %s" % (
+                      (time.asctime(), url))
-                    time.asctime(), url))
+                print("I: [%s] - saving it to %s" %
-            print("I: [%s] - saving it to %s" % (time.asctime(), self.path))
+                      (time.asctime(), self.path))
             try:
                 response = urllib.urlopen(url)
-        except IOError as e:
-            print("W: [%s] - error connecting to %s: %s" % (
-                    time.asctime(), self.path, e))
-            return success  # failure
-
-        # Only [re]create the manifest file if one was successfully downloaded
-        # this allows for an existing image to be used if the download fails.
                 if response.code == 200:
+                    # Only [re]create the manifest file if one was successfully
+                    # downloaded. This allows for an existing image to be used
+                    # if the download fails.
                     path_dir = os.path.dirname(self.path)
                     if not os.path.exists(path_dir):
                         os.makedirs(path_dir)
                     with open(self.path, 'w') as fp:
                         fp.write(response.read())
                     success = True
+                    break
+
+            except IOError as e:
+                print("W: [%s] - error connecting to %s: %s" % (
+                        time.asctime(), self.path, e))
 
         return success
 

tests/test_boottest.py

@@ -49,7 +49,10 @@ class TestTouchManifest(unittest.TestCase):
         self.addCleanup(shutil.rmtree, self.path)
         _p = mock.patch('urllib.urlopen')
         self.mocked_urlopen = _p.start()
-        self.mocked_urlopen.side_effect = [FakeResponse(code=404),]
+        self.mocked_urlopen.side_effect = [
+            FakeResponse(code=404),
+            FakeResponse(code=404),
+        ]
         self.addCleanup(_p.stop)
         self.fetch_retries_orig = boottest.FETCH_RETRIES
         def restore_fetch_retries():
@@ -90,7 +93,10 @@ class TestTouchManifest(unittest.TestCase):
         self.assertIn('foo', manifest)
 
     def test_fetch_exception(self):
-        self.mocked_urlopen.side_effect = [IOError("connection refused")]
+        self.mocked_urlopen.side_effect = [
+            IOError("connection refused"),
+            IOError("connection refused"),
+        ]
         manifest = boottest.TouchManifest('not-real', 'not-real')
         self.assertEqual(0, len(manifest._manifest))