[PATCH 3/4] Correctly handle refs/patches on series rename

[Yann Dirson <ydirson@altern.org>]

From: Yann Dirson <ydirson@altern.org>

When renaming a series, the refs/patches dir was not moved, and
by chance a new one was created by the repository-upgrade code, but
that left the old one behind as cruft.

Also added a regression test to assert that nothing by the old name
is left behind.
---

 stgit/stack.py           |    2 ++
 t/t1001-branch-rename.sh |   33 +++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 0 deletions(-)

diff --git a/stgit/stack.py b/stgit/stack.py
index f4d7490..92407e7 100644
--- a/stgit/stack.py
+++ b/stgit/stack.py
@@ -497,6 +497,8 @@ class Series:
             os.rename(self.__series_dir, to_stack.__series_dir)
         if os.path.exists(self.__base_file):
             os.rename(self.__base_file, to_stack.__base_file)
+        if os.path.exists(self.__refs_dir):
+            os.rename(self.__refs_dir, to_stack.__refs_dir)
 
         self.__init__(to_name)
 
diff --git a/t/t1001-branch-rename.sh b/t/t1001-branch-rename.sh
new file mode 100755
index 0000000..65a5280
--- /dev/null
+++ b/t/t1001-branch-rename.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Yann Dirson
+#
+
+test_description='Branch operations.
+
+Exercises the "stg branch" commands.
+'
+
+. ./test-lib.sh
+
+test_stg_init
+
+test_expect_success \
+    'Create an stgit branch from scratch' \
+    'stg branch -c foo &&
+     stg new p1 -m "p1"
+'
+
+test_expect_failure \
+    'Rename the current stgit branch' \
+    'stg branch -r foo bar
+'
+
+test_expect_success \
+    'Rename an stgit branch' \
+    'stg branch -c buz &&
+     stg branch -r foo bar &&
+     test -z `find .git -name foo | tee /dev/stderr`
+'
+
+test_done