Update remote if url has changed

Previously we were checking if the remote name is there to add it.
Now, if the patches_repo url has changed, but we maintain the same
remote_name, this is updated.

For doing this, we just check if the remote_name exists and if the
patches_repo differs from its value. If so, we just remove the remote
so next line below it'd recreate it.

Not it's based on new git_wrapper version that allows to return the
remote dict with its value but also to remove the remote.

Requires: release-depot/git_wrapper#114

Author: evallesp

patch_rebaser/patch_rebaser.py

@@ -457,8 +457,14 @@ def main():
     )
     if not patches_repo:
         return
-
-    if config.remote_name not in repo.remote.names():
+    remotes = repo.remote.names_url_dict()
+    # If the remote url has changed, we removes to re-create
+    if (config.remote_name in remotes.keys() and
+            patches_repo != remotes[config.remote_name]):
+        repo.remote.remove(config.remote_name)
+        remotes = repo.remote.names_url_dict()
+    # Create the remote if it doesn't exist
+    if config.remote_name not in remotes.keys():
         if not repo.remote.add(config.remote_name, patches_repo):
             raise Exception(
                 "Could not add remote {0} ({1})".format(config.remote_name,

tests/test_patch_rebaser.py

@@ -354,6 +354,27 @@ def test_main_function(mock_env, mock_config, monkeypatch):
         'private-rebaser-16.1-') is True
 
 
+def test_main_function_update_remote_url(mock_env, mock_config, monkeypatch):
+    """
+    GIVEN a valid patch_rebaser configuration and environment
+    WHEN main() is called
+    AND remote url has changed
+    THEN the remote.remove method has been called
+    """
+    repo = MagicMock()
+    monkeypatch.setattr(repo.remote, 'names_url_dict',
+                        lambda: {"test_remote_name":
+                                 "http://origin_remote.com"})
+
+    with monkeypatch.context() as m:
+        m.setattr(patch_rebaser.patch_rebaser, 'GitRepo',
+                  Mock(return_value=repo))
+        m.setattr(patch_rebaser.patch_rebaser, 'get_patches_repo',
+                  Mock(return_value="http://test_repo.com"))
+        main()
+    repo.remote.remove.assert_called_once()
+
+
 def test_packages_to_process_skips_packages_not_in_the_list(
         mock_env, mock_config_with_pkgs_to_process, monkeypatch):
     """