[Updater] Prefer url similar to previous one
This change computes edit distant between old url and each of new urls.
And use the url most like previous one.
Test: update any library
Change-Id: I959a22168652c7543da2cdb29d36a1d061ade7e9
diff --git a/external_updater_test.py b/external_updater_test.py
new file mode 100644
index 0000000..0c82f05
--- /dev/null
+++ b/external_updater_test.py
@@ -0,0 +1,48 @@
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Unit tests for external updater."""
+
+import unittest
+
+import github_archive_updater
+
+
+class ExternalUpdaterTest(unittest.TestCase):
+ """Unit tests for external updater."""
+
+ def test_url_selection(self):
+ """Tests that GithubArchiveUpdater can choose the right url."""
+ prefix = "https://github.com/author/project/"
+ urls = [
+ prefix + "releases/download/ver-1.0/ver-1.0-binary.zip",
+ prefix + "releases/download/ver-1.0/ver-1.0-binary.tar.gz",
+ prefix + "releases/download/ver-1.0/ver-1.0-src.zip",
+ prefix + "releases/download/ver-1.0/ver-1.0-src.tar.gz",
+ prefix + "archive/ver-1.0.zip",
+ prefix + "archive/ver-1.0.tar.gz",
+ ]
+
+ previous_url = prefix + "releases/download/ver-0.9/ver-0.9-src.tar.gz"
+ url = github_archive_updater.choose_best_url(urls, previous_url)
+ expected_url = prefix + "releases/download/ver-1.0/ver-1.0-src.tar.gz"
+ self.assertEqual(url, expected_url)
+
+ previous_url = prefix + "archive/ver-0.9.zip"
+ url = github_archive_updater.choose_best_url(urls, previous_url)
+ expected_url = prefix + "archive/ver-1.0.zip"
+ self.assertEqual(url, expected_url)
+
+
+if __name__ == '__main__':
+ unittest.main()
