Adding mozilla libraries required by Firefox interop test.

third_party/mozprofile/tests/bug758250.py

+#!/usr/bin/env python
+
+import mozprofile
+import os
+import shutil
+import tempfile
+import unittest
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+class Bug758250(unittest.TestCase):
+    """
+    use of --profile in mozrunner just blows away addon sources:
+    https://bugzilla.mozilla.org/show_bug.cgi?id=758250
+    """
+
+    def test_profile_addon_cleanup(self):
+
+        # sanity check: the empty addon should be here
+        empty = os.path.join(here, 'empty')
+        self.assertTrue(os.path.exists(empty))
+        self.assertTrue(os.path.isdir(empty))
+        self.assertTrue(os.path.exists(os.path.join(empty, 'install.rdf')))
+
+        # because we are testing data loss, let's make sure we make a copy
+        tmpdir = tempfile.mktemp()
+        shutil.copytree(empty, tmpdir)
+        self.assertTrue(os.path.exists(os.path.join(tmpdir, 'install.rdf')))
+
+        # make a starter profile
+        profile = mozprofile.FirefoxProfile()
+        path = profile.profile
+
+        # make a new profile based on the old
+        newprofile = mozprofile.FirefoxProfile(profile=path, addons=[tmpdir])
+        newprofile.cleanup()
+
+        # the source addon *should* still exist
+        self.assertTrue(os.path.exists(tmpdir))
+        self.assertTrue(os.path.exists(os.path.join(tmpdir, 'install.rdf')))
+
+        # remove vestiges
+        shutil.rmtree(tmpdir)
+
+if __name__ == '__main__':
+    unittest.main()