Rev 3227: Add missing test script. in http://people.ubuntu.com/~robertc/baz2.0/shallow-branch

[Robert Collins]

At http://people.ubuntu.com/~robertc/baz2.0/shallow-branch

------------------------------------------------------------
revno: 3227
revision-id:robertc at robertcollins.net-20080214020803-7d2spy97gxqd8yd9
parent: robertc at robertcollins.net-20080214004032-9vms1rfzv6tabsih
committer: Robert Collins <robertc at robertcollins.net>
branch nick: StackableBranch
timestamp: Thu 2008-02-14 13:08:03 +1100
message:
  Add missing test script.
added:
  bzrlib/tests/branch_implementations/test_stacking.py test_stacking.py-20080214020755-msjlkb7urobwly0f-1
=== added file 'bzrlib/tests/branch_implementations/test_stacking.py'
--- a/bzrlib/tests/branch_implementations/test_stacking.py	1970-01-01 00:00:00 +0000
+++ b/bzrlib/tests/branch_implementations/test_stacking.py	2008-02-14 02:08:03 +0000
@@ -0,0 +1,46 @@
+# Copyright (C) 2008 Canonical Ltd
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+"""Tests for Branch.get_stacked_on and set_stacked_on."""
+
+from bzrlib import errors
+from bzrlib.tests import TestNotApplicable
+from bzrlib.tests.branch_implementations import TestCaseWithBranch
+
+
+class TestStacking(TestCaseWithBranch):
+
+    def test_get_set_stacked_on(self):
+        # branches must either:
+        # raise UnstackableBranchFormat or
+        # raise UnstackableRepositoryFormat or
+        # permit stacking to be done and then return the stacked location.
+        branch = self.make_branch('branch')
+        target = self.make_branch('target')
+        old_format_errors = (
+            errors.UnstackableBranchFormat,
+            errors.UnstackableRepositoryFormat,
+            )
+        try:
+            branch.set_stacked_on(target.base)
+        except old_format_errors:
+            # if the set failed, so must the get
+            self.assertRaises(old_format_errors, branch.get_stacked_on)
+            return
+        # now we have a stacked branch:
+        self.assertEqual(target.base, branch.get_stacked_on)
+        branch.set_stacked_on(None)
+        self.assertRaises(NotStacked, branch.get_stacked_on)