1 files changed, 105 insertions, 0 deletions
diff --git a/u1db/tests/commandline/test_command.py b/u1db/tests/commandline/test_command.py
new file mode 100644
index 00000000..43580f23
--- /dev/null
+++ b/u1db/tests/commandline/test_command.py
@@ -0,0 +1,105 @@
+# Copyright 2011 Canonical Ltd.
+#
+# This file is part of u1db.
+#
+# u1db is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3
+# as published by the Free Software Foundation.
+#
+# u1db 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 Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with u1db.  If not, see <http://www.gnu.org/licenses/>.
+
+import cStringIO
+import argparse
+
+from u1db import (
+    tests,
+    )
+from u1db.commandline import (
+    command,
+    )
+
+
+class MyTestCommand(command.Command):
+    """Help String"""
+
+    name = 'mycmd'
+
+    @classmethod
+    def _populate_subparser(cls, parser):
+        parser.add_argument('foo')
+        parser.add_argument('--bar', dest='nbar', type=int)
+
+    def run(self, foo, nbar):
+        self.stdout.write('foo: %s nbar: %d' % (foo, nbar))
+        return 0
+
+
+def make_stdin_out_err():
+    return cStringIO.StringIO(), cStringIO.StringIO(), cStringIO.StringIO()
+
+
+class TestCommandGroup(tests.TestCase):
+
+    def trap_system_exit(self, func, *args, **kwargs):
+        try:
+            return func(*args, **kwargs)
+        except SystemExit, e:
+            self.fail('Got SystemExit trying to run: %s' % (func,))
+
+    def parse_args(self, parser, args):
+        return self.trap_system_exit(parser.parse_args, args)
+
+    def test_register(self):
+        group = command.CommandGroup()
+        self.assertEqual({}, group.commands)
+        group.register(MyTestCommand)
+        self.assertEqual({'mycmd': MyTestCommand},
+                         group.commands)
+
+    def test_make_argparser(self):
+        group = command.CommandGroup(description='test-foo')
+        parser = group.make_argparser()
+        self.assertIsInstance(parser, argparse.ArgumentParser)
+
+    def test_make_argparser_with_command(self):
+        group = command.CommandGroup(description='test-foo')
+        group.register(MyTestCommand)
+        parser = group.make_argparser()
+        args = self.parse_args(parser, ['mycmd', 'foozizle', '--bar=10'])
+        self.assertEqual('foozizle', args.foo)
+        self.assertEqual(10, args.nbar)
+        self.assertEqual(MyTestCommand, args.subcommand)
+
+    def test_run_argv(self):
+        group = command.CommandGroup()
+        group.register(MyTestCommand)
+        stdin, stdout, stderr = make_stdin_out_err()
+        ret = self.trap_system_exit(group.run_argv,
+                                    ['mycmd', 'foozizle', '--bar=10'],
+                                    stdin, stdout, stderr)
+        self.assertEqual(0, ret)
+
+
+class TestCommand(tests.TestCase):
+
+    def make_command(self):
+        stdin, stdout, stderr = make_stdin_out_err()
+        return command.Command(stdin, stdout, stderr)
+
+    def test__init__(self):
+        cmd = self.make_command()
+        self.assertIsNot(None, cmd.stdin)
+        self.assertIsNot(None, cmd.stdout)
+        self.assertIsNot(None, cmd.stderr)
+
+    def test_run_args(self):
+        stdin, stdout, stderr = make_stdin_out_err()
+        cmd = MyTestCommand(stdin, stdout, stderr)
+        res = cmd.run(foo='foozizle', nbar=10)
+        self.assertEqual('foo: foozizle nbar: 10', stdout.getvalue())