init: reject unknown args

If you pass args to `repo init` when first creating a checkout, the
repo launcher throws an error.  But the init subcommand that runs in
an existing checkout silently ignores them.  Throw a proper error.

Change-Id: I433bfcc73902d25f6b6a2974e77f6a977a75ed16
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/279696
Reviewed-by: Jonathan Nieder <jrn@google.com>
Tested-by: Mike Frysinger <vapier@google.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/tests/test_subcmds_init.py b/tests/test_subcmds_init.py
new file mode 100644
index 00000000..3a5ca3c2
--- /dev/null
+++ b/tests/test_subcmds_init.py
@@ -0,0 +1,49 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Unittests for the subcmds/init.py module."""
+
+import unittest
+
+from subcmds import init
+
+
+class InitCommand(unittest.TestCase):
+  """Check registered all_commands."""
+
+  def setUp(self):
+    self.cmd = init.Init()
+
+  def test_cli_parser_good(self):
+    """Check valid command line options."""
+    ARGV = (
+        [],
+    )
+    for argv in ARGV:
+      opts, args = self.cmd.OptionParser.parse_args(argv)
+      self.cmd.ValidateOptions(opts, args)
+
+  def test_cli_parser_bad(self):
+    """Check invalid command line options."""
+    ARGV = (
+        # Too many arguments.
+        ['asdf'],
+
+        # Conflicting options.
+        ['--mirror', '--archive'],
+    )
+    for argv in ARGV:
+      opts, args = self.cmd.OptionParser.parse_args(argv)
+      with self.assertRaises(SystemExit):
+        self.cmd.ValidateOptions(opts, args)