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# Copyright (c) 2009 Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import sys
import unittest
from optparse import make_option
from webkitpy.common.system.outputcapture import OutputCapture
from webkitpy.tool.multicommandtool import MultiCommandTool, Command, TryAgain
class TrivialCommand(Command):
name = "trivial"
show_in_main_help = True
def __init__(self, **kwargs):
Command.__init__(self, "help text", **kwargs)
def execute(self, options, args, tool):
pass
class UncommonCommand(TrivialCommand):
name = "uncommon"
show_in_main_help = False
class LikesToRetry(Command):
name = "likes-to-retry"
show_in_main_help = True
def __init__(self, **kwargs):
Command.__init__(self, "help text", **kwargs)
self.execute_count = 0
def execute(self, options, args, tool):
self.execute_count += 1
if self.execute_count < 2:
raise TryAgain()
class CommandTest(unittest.TestCase):
def test_name_with_arguments(self):
command_with_args = TrivialCommand(argument_names="ARG1 ARG2")
self.assertEqual(command_with_args.name_with_arguments(), "trivial ARG1 ARG2")
command_with_args = TrivialCommand(options=[make_option("--my_option")])
self.assertEqual(command_with_args.name_with_arguments(), "trivial [options]")
def test_parse_required_arguments(self):
self.assertEqual(Command._parse_required_arguments("ARG1 ARG2"), ["ARG1", "ARG2"])
self.assertEqual(Command._parse_required_arguments("[ARG1] [ARG2]"), [])
self.assertEqual(Command._parse_required_arguments("[ARG1] ARG2"), ["ARG2"])
# Note: We might make our arg parsing smarter in the future and allow this type of arguments string.
self.assertRaises(Exception, Command._parse_required_arguments, "[ARG1 ARG2]")
def test_required_arguments(self):
two_required_arguments = TrivialCommand(argument_names="ARG1 ARG2 [ARG3]")
expected_missing_args_error = "2 arguments required, 1 argument provided. Provided: 'foo' Required: ARG1 ARG2\nSee 'trivial-tool help trivial' for usage.\n"
exit_code = OutputCapture().assert_outputs(self, two_required_arguments.check_arguments_and_execute, [None, ["foo"], TrivialTool()], expected_stderr=expected_missing_args_error)
self.assertEqual(exit_code, 1)
class TrivialTool(MultiCommandTool):
def __init__(self, commands=None):
MultiCommandTool.__init__(self, name="trivial-tool", commands=commands)
def path(self):
return __file__
def should_execute_command(self, command):
return (True, None)
class MultiCommandToolTest(unittest.TestCase):
def _assert_split(self, args, expected_split):
self.assertEqual(MultiCommandTool._split_command_name_from_args(args), expected_split)
def test_split_args(self):
# MultiCommandToolTest._split_command_name_from_args returns: (command, args)
full_args = ["--global-option", "command", "--option", "arg"]
full_args_expected = ("command", ["--global-option", "--option", "arg"])
self._assert_split(full_args, full_args_expected)
full_args = []
full_args_expected = (None, [])
self._assert_split(full_args, full_args_expected)
full_args = ["command", "arg"]
full_args_expected = ("command", ["arg"])
self._assert_split(full_args, full_args_expected)
def test_command_by_name(self):
# This also tests Command auto-discovery.
tool = TrivialTool()
self.assertEqual(tool.command_by_name("trivial").name, "trivial")
self.assertEqual(tool.command_by_name("bar"), None)
def _assert_tool_main_outputs(self, tool, main_args, expected_stdout, expected_stderr = "", expected_exit_code=0):
exit_code = OutputCapture().assert_outputs(self, tool.main, [main_args], expected_stdout=expected_stdout, expected_stderr=expected_stderr)
self.assertEqual(exit_code, expected_exit_code)
def test_retry(self):
likes_to_retry = LikesToRetry()
tool = TrivialTool(commands=[likes_to_retry])
tool.main(["tool", "likes-to-retry"])
self.assertEqual(likes_to_retry.execute_count, 2)
def test_global_help(self):
tool = TrivialTool(commands=[TrivialCommand(), UncommonCommand()])
expected_common_commands_help = """Usage: trivial-tool [options] COMMAND [ARGS]
Options:
-h, --help show this help message and exit
Common trivial-tool commands:
trivial help text
See 'trivial-tool help --all-commands' to list all commands.
See 'trivial-tool help COMMAND' for more information on a specific command.
"""
self._assert_tool_main_outputs(tool, ["tool"], expected_common_commands_help)
self._assert_tool_main_outputs(tool, ["tool", "help"], expected_common_commands_help)
expected_all_commands_help = """Usage: trivial-tool [options] COMMAND [ARGS]
Options:
-h, --help show this help message and exit
All trivial-tool commands:
help Display information about this program or its subcommands
trivial help text
uncommon help text
See 'trivial-tool help --all-commands' to list all commands.
See 'trivial-tool help COMMAND' for more information on a specific command.
"""
self._assert_tool_main_outputs(tool, ["tool", "help", "--all-commands"], expected_all_commands_help)
# Test that arguments can be passed before commands as well
self._assert_tool_main_outputs(tool, ["tool", "--all-commands", "help"], expected_all_commands_help)
def test_command_help(self):
command_with_options = TrivialCommand(options=[make_option("--my_option")], long_help="LONG HELP")
tool = TrivialTool(commands=[command_with_options])
expected_subcommand_help = "trivial [options] help text\n\nLONG HELP\n\nOptions:\n --my_option=MY_OPTION\n\n"
self._assert_tool_main_outputs(tool, ["tool", "help", "trivial"], expected_subcommand_help)
if __name__ == "__main__":
unittest.main()
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