T8916: add simple nosetest for subtree_from_partial utility

1 files changed, 48 insertions, 0 deletions

diff --git a/src/tests/test_config_tree.py b/src/tests/test_config_tree.py
new file mode 100644
index 000000000..d6339c570
--- /dev/null
+++ b/src/tests/test_config_tree.py
@@ -0,0 +1,48 @@
+# Copyright (C) VyOS Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# 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, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import json
+import unittest
+from unittest import TestCase
+
+from vyos.configtree import ConfigTree
+from vyos.referencetree import ReferenceTree
+from vyos.derivedtree import subtree_from_list_of_partial_paths
+
+
+class TestInitialSetup(TestCase):
+    def setUp(self):
+        with open('data/config.boot.default') as f:
+            config_str = f.read()
+            self.ct = ConfigTree(config_str)
+
+    def test_subtree_from_partial(self):
+        reftree = ReferenceTree(cache_file='data/reftree.cache')
+
+        # workaround since configtree.list_nodes does not take an empty path
+        d = json.loads(self.ct.to_json())
+        top_nodes = list(d)
+        paths = [s.split() for s in top_nodes]
+
+        reassemble = subtree_from_list_of_partial_paths(
+            self.ct, paths, reference_tree=reftree
+        )
+
+        self.assertEqual(self.ct, reassemble)
+
+
+if __name__ == '__main__':
+    unittest.main()