test: Validate cli.key_id output.

caucase/test.py

@@ -22,6 +22,7 @@ Test suite
 """
 # pylint: disable=too-many-lines, too-many-public-methods
 from __future__ import absolute_import
+from binascii import hexlify
 import contextlib
 from Cookie import SimpleCookie
 import datetime
@@ -2236,11 +2237,30 @@ class CaucaseTest(unittest.TestCase):
     os.unlink(self._server_db)
     os.unlink(self._server_key)
 
-    # XXX: just for the coverage... Should check output
+    with captureStdout() as stdout:
+      cli.key_id([
+        '--private-key', user_key_path, user2_key_path, user2_new_key_path,
+      ])
+    key_id_dict = dict(
+      line.rsplit(' ', 1)
+      for line in stdout.getvalue().splitlines()
+    )
+    key_id = key_id_dict.pop(user_key_path)
+    key2_id = key_id_dict.pop(user2_key_path)
+    new_key2_id = key_id_dict.pop(user2_new_key_path)
+    self.assertFalse(key_id_dict)
+    with captureStdout() as stdout:
       cli.key_id([
-      '--private-key', user_key_path, user2_key_path,
         '--backup', backup_path,
       ])
+    self.assertItemsEqual(
+      [
+        backup_path,
+        '  ' + key_id,
+        '  ' + key2_id,
+      ],
+      stdout.getvalue().splitlines(),
+    )
 
     self.assertEqual(
       self._restoreServer(
@@ -2321,9 +2341,18 @@ class CaucaseTest(unittest.TestCase):
     if not backup_path_list: # pragma: no cover
       raise AssertionError('Backup file not created after 1 second')
     backup_path, = glob.glob(backup_glob)
+    with captureStdout() as stdout:
       cli.key_id([
         '--backup', backup_path,
       ])
+    self.assertItemsEqual(
+      [
+        backup_path,
+        '  ' + key_id,
+        '  ' + new_key2_id,
+      ],
+      stdout.getvalue().splitlines(),
+    )
 
     # Now, push a lot of data to exercise chunked checksum in backup &
     # restoration code
@@ -2346,9 +2375,18 @@ class CaucaseTest(unittest.TestCase):
     if not backup_path_list: # pragma: no cover
       raise AssertionError('Backup file took too long to be created')
     backup_path, = glob.glob(backup_glob)
+    with captureStdout() as stdout:
       cli.key_id([
         '--backup', backup_path,
       ])
+    self.assertItemsEqual(
+      [
+        backup_path,
+        '  ' + key_id,
+        '  ' + new_key2_id,
+      ],
+      stdout.getvalue().splitlines(),
+    )
     self._stopServer()
     os.unlink(self._server_db)
     os.unlink(self._server_key)