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test_argparse_completer.py
886 lines (683 loc) · 34.4 KB
/
test_argparse_completer.py
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# coding=utf-8
# flake8: noqa E302
"""
Unit/functional testing for argparse completer in cmd2
"""
import argparse
from typing import List
import pytest
import cmd2
from cmd2 import with_argparser, Cmd2ArgumentParser, CompletionError, CompletionItem
from cmd2.utils import StdSim, basic_complete
from .conftest import run_cmd, complete_tester
# Lists used in our tests (there is a mix of sorted and unsorted on purpose)
static_int_choices_list = [-1, 1, -2, 2, 0, -12]
static_choices_list = ['static', 'choices', 'stop', 'here']
choices_from_function = ['choices', 'function', 'chatty', 'smith']
choices_from_method = ['choices', 'method', 'most', 'improved']
set_value_choices = ['set', 'value', 'choices']
one_or_more_choices = ['one', 'or', 'more', 'choices']
optional_choices = ['a', 'few', 'optional', 'choices']
range_choices = ['some', 'range', 'choices']
remainder_choices = ['remainder', 'choices']
positional_choices = ['the', 'positional', 'choices']
completions_from_function = ['completions', 'function', 'fairly', 'complete']
completions_from_method = ['completions', 'method', 'missed', 'spot']
def choices_function() -> List[str]:
"""Function that provides choices"""
return choices_from_function
def completer_function(text: str, line: str, begidx: int, endidx: int) -> List[str]:
"""Tab completion function"""
return basic_complete(text, line, begidx, endidx, completions_from_function)
def choices_takes_arg_tokens(arg_tokens: argparse.Namespace) -> List[str]:
"""Choices function that receives arg_tokens from AutoCompleter"""
return [arg_tokens['parent_arg'][0], arg_tokens['subcommand'][0]]
def completer_takes_arg_tokens(text: str, line: str, begidx: int, endidx: int,
arg_tokens: argparse.Namespace) -> List[str]:
"""Completer function that receives arg_tokens from AutoCompleter"""
match_against = [arg_tokens['parent_arg'][0], arg_tokens['subcommand'][0]]
return basic_complete(text, line, begidx, endidx, match_against)
# noinspection PyMethodMayBeStatic,PyUnusedLocal
class AutoCompleteTester(cmd2.Cmd):
"""Cmd2 app that exercises AutoCompleter class"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
############################################################################################################
# Begin code related to help and command name completion
############################################################################################################
# Top level parser for music command
music_parser = Cmd2ArgumentParser(description='Manage music')
# Add subcommands to music
music_subparsers = music_parser.add_subparsers()
music_create_parser = music_subparsers.add_parser('create', help='create music')
# Add subcommands to music -> create
music_create_subparsers = music_create_parser.add_subparsers()
music_create_jazz_parser = music_create_subparsers.add_parser('jazz', help='create jazz')
music_create_rock_parser = music_create_subparsers.add_parser('rock', help='create rocks')
@with_argparser(music_parser)
def do_music(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to flag completion
############################################################################################################
# Uses default flag prefix value (-)
flag_parser = Cmd2ArgumentParser()
flag_parser.add_argument('-n', '--normal_flag', help='a normal flag', action='store_true')
flag_parser.add_argument('-a', '--append_flag', help='append flag', action='append')
flag_parser.add_argument('-o', '--append_const_flag', help='append const flag', action='append_const', const=True)
flag_parser.add_argument('-c', '--count_flag', help='count flag', action='count')
flag_parser.add_argument('-s', '--suppressed_flag', help=argparse.SUPPRESS, action='store_true')
flag_parser.add_argument('-r', '--remainder_flag', nargs=argparse.REMAINDER, help='a remainder flag')
@with_argparser(flag_parser)
def do_flag(self, args: argparse.Namespace) -> None:
pass
# Uses non-default flag prefix value (+)
plus_flag_parser = Cmd2ArgumentParser(prefix_chars='+')
plus_flag_parser.add_argument('+n', '++normal_flag', help='a normal flag', action='store_true')
@with_argparser(plus_flag_parser)
def do_plus_flag(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to testing choices, choices_function, and choices_method parameters
############################################################################################################
def choices_method(self) -> List[str]:
"""Method that provides choices"""
return choices_from_method
def completion_item_method(self) -> List[CompletionItem]:
"""Choices method that returns CompletionItems"""
items = []
for i in range(0, 10):
main_str = 'main_str{}'.format(i)
items.append(CompletionItem(main_str, desc='blah blah'))
return items
choices_parser = Cmd2ArgumentParser()
# Flag args for choices command. Include string and non-string arg types.
choices_parser.add_argument("-l", "--list", help="a flag populated with a choices list",
choices=static_choices_list)
choices_parser.add_argument("-f", "--function", help="a flag populated with a choices function",
choices_function=choices_function)
choices_parser.add_argument("-m", "--method", help="a flag populated with a choices method",
choices_method=choices_method)
choices_parser.add_argument('-n', "--no_header", help='this arg has a no descriptive header',
choices_method=completion_item_method)
choices_parser.add_argument('-i', '--int', type=int, help='a flag with an int type',
choices=static_int_choices_list)
# Positional args for choices command
choices_parser.add_argument("list_pos", help="a positional populated with a choices list",
choices=static_choices_list)
choices_parser.add_argument("function_pos", help="a positional populated with a choices function",
choices_function=choices_function)
choices_parser.add_argument("method_pos", help="a positional populated with a choices method",
choices_method=choices_method)
@with_argparser(choices_parser)
def do_choices(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to testing completer_function and completer_method parameters
############################################################################################################
def completer_method(self, text: str, line: str, begidx: int, endidx: int) -> List[str]:
"""Tab completion method"""
return basic_complete(text, line, begidx, endidx, completions_from_method)
completer_parser = Cmd2ArgumentParser()
# Flag args for completer command
completer_parser.add_argument("-f", "--function", help="a flag using a completer function",
completer_function=completer_function)
completer_parser.add_argument("-m", "--method", help="a flag using a completer method",
completer_method=completer_method)
# Positional args for completer command
completer_parser.add_argument("function_pos", help="a positional using a completer function",
completer_function=completer_function)
completer_parser.add_argument("method_pos", help="a positional using a completer method",
completer_method=completer_method)
@with_argparser(completer_parser)
def do_completer(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to nargs
############################################################################################################
nargs_parser = Cmd2ArgumentParser()
# Flag args for nargs command
nargs_parser.add_argument("--set_value", help="a flag with a set value for nargs", nargs=2,
choices=set_value_choices)
nargs_parser.add_argument("--one_or_more", help="a flag wanting one or more args", nargs=argparse.ONE_OR_MORE,
choices=one_or_more_choices)
nargs_parser.add_argument("--optional", help="a flag with an optional value", nargs=argparse.OPTIONAL,
choices=optional_choices)
nargs_parser.add_argument("--range", help="a flag with nargs range", nargs=(1, 2),
choices=range_choices)
nargs_parser.add_argument("--remainder", help="a flag wanting remaining", nargs=argparse.REMAINDER,
choices=remainder_choices)
nargs_parser.add_argument("normal_pos", help="a remainder positional", nargs=2,
choices=positional_choices)
nargs_parser.add_argument("remainder_pos", help="a remainder positional", nargs=argparse.REMAINDER,
choices=remainder_choices)
@with_argparser(nargs_parser)
def do_nargs(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to testing tab hints
############################################################################################################
hint_parser = Cmd2ArgumentParser()
hint_parser.add_argument('-f', '--flag', help='a flag arg')
hint_parser.add_argument('-s', '--suppressed_help', help=argparse.SUPPRESS)
hint_parser.add_argument('-t', '--suppressed_hint', help='a flag arg', suppress_tab_hint=True)
hint_parser.add_argument('hint_pos', help='here is a hint\nwith new lines')
hint_parser.add_argument('no_help_pos')
@with_argparser(hint_parser)
def do_hint(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to CompletionError
############################################################################################################
def completer_raise_error(self, text: str, line: str, begidx: int, endidx: int) -> List[str]:
"""Raises CompletionError"""
raise CompletionError('completer broke something')
def choice_raise_error(self) -> List[str]:
"""Raises CompletionError"""
raise CompletionError('choice broke something')
comp_error_parser = Cmd2ArgumentParser()
comp_error_parser.add_argument('completer', help='positional arg',
completer_method=completer_raise_error)
comp_error_parser.add_argument('--choice', help='flag arg',
choices_method=choice_raise_error)
@with_argparser(comp_error_parser)
def do_raise_completion_error(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to receiving arg_tokens
############################################################################################################
arg_tokens_parser = Cmd2ArgumentParser()
arg_tokens_parser.add_argument('parent_arg', help='arg from a parent parser')
# Create a subcommand for to exercise receiving parent_tokens and subcommand name in arg_tokens
arg_tokens_subparser = arg_tokens_parser.add_subparsers(dest='subcommand')
arg_tokens_subcmd_parser = arg_tokens_subparser.add_parser('subcmd')
arg_tokens_subcmd_parser.add_argument('choices_pos', choices_function=choices_takes_arg_tokens)
arg_tokens_subcmd_parser.add_argument('completer_pos', completer_function=completer_takes_arg_tokens)
# Used to override parent_arg in arg_tokens_parser
arg_tokens_subcmd_parser.add_argument('--parent_arg')
@with_argparser(arg_tokens_parser)
def do_arg_tokens(self, args: argparse.Namespace) -> None:
pass
############################################################################################################
# Begin code related to mutually exclusive groups
############################################################################################################
mutex_parser = Cmd2ArgumentParser()
mutex_group = mutex_parser.add_mutually_exclusive_group(required=True)
mutex_group.add_argument('optional_pos', help='the optional positional', nargs=argparse.OPTIONAL)
mutex_group.add_argument('-f', '--flag', help='the flag arg')
mutex_group.add_argument('-o', '--other_flag', help='the other flag arg')
mutex_parser.add_argument('last_arg', help='the last arg')
@with_argparser(mutex_parser)
def do_mutex(self, args: argparse.Namespace) -> None:
pass
@pytest.fixture
def ac_app():
app = AutoCompleteTester()
app.stdout = StdSim(app.stdout)
return app
@pytest.mark.parametrize('command', [
'music',
'music create',
'music create rock',
'music create jazz'
])
def test_help(ac_app, command):
out1, err1 = run_cmd(ac_app, '{} -h'.format(command))
out2, err2 = run_cmd(ac_app, 'help {}'.format(command))
assert out1 == out2
def test_bad_subcommand_help(ac_app):
# These should give the same output because the second one isn't using a
# real subcommand, so help will be called on the music command instead.
out1, err1 = run_cmd(ac_app, 'help music')
out2, err2 = run_cmd(ac_app, 'help music fake')
assert out1 == out2
@pytest.mark.parametrize('command, text, completions', [
('', 'mus', ['music ']),
('music', 'cre', ['create ']),
('music', 'creab', []),
('music create', '', ['jazz', 'rock']),
('music crea', 'jazz', []),
('music create', 'foo', []),
('fake create', '', []),
('music fake', '', [])
])
def test_complete_help(ac_app, command, text, completions):
line = 'help {} {}'.format(command, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
@pytest.mark.parametrize('subcommand, text, completions', [
('create', '', ['jazz', 'rock']),
('create', 'ja', ['jazz ']),
('create', 'foo', []),
('creab', 'ja', [])
])
def test_subcommand_completions(ac_app, subcommand, text, completions):
line = 'music {} {}'.format(subcommand, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
@pytest.mark.parametrize('command_and_args, text, completions', [
# Complete all flags (suppressed will not show)
('flag', '-', ['--append_const_flag', '--append_flag', '--count_flag', '--help', '--normal_flag',
'--remainder_flag', '-a', '-c', '-h', '-n', '-o', '-r']),
('flag', '--', ['--append_const_flag', '--append_flag', '--count_flag', '--help',
'--normal_flag', '--remainder_flag']),
# Complete individual flag
('flag', '-n', ['-n ']),
('flag', '--n', ['--normal_flag ']),
# No flags should complete until current flag has its args
('flag --append_flag', '-', []),
# Complete REMAINDER flag name
('flag', '-r', ['-r ']),
('flag', '--r', ['--remainder_flag ']),
# No flags after a REMAINDER should complete
('flag -r value', '-', []),
('flag --remainder_flag value', '--', []),
# Suppressed flag should not complete
('flag', '-s', []),
('flag', '--s', []),
# A used flag should not show in completions
('flag -n', '--', ['--append_const_flag', '--append_flag', '--count_flag', '--help', '--remainder_flag']),
# Flags with actions set to append, append_const, and count will always show even if they've been used
('flag --append_const_flag -c --append_flag value', '--', ['--append_const_flag', '--append_flag', '--count_flag',
'--help', '--normal_flag', '--remainder_flag']),
# Non-default flag prefix character (+)
('plus_flag', '+', ['++help', '++normal_flag', '+h', '+n']),
('plus_flag', '++', ['++help', '++normal_flag']),
# Flag completion should not occur after '--' since that tells argparse all remaining arguments are non-flags
('flag --', '--', []),
('flag --help --', '--', []),
('plus_flag --', '++', []),
('plus_flag ++help --', '++', [])
])
def test_autcomp_flag_completion(ac_app, command_and_args, text, completions):
line = '{} {}'.format(command_and_args, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
@pytest.mark.parametrize('flag, text, completions', [
('-l', '', static_choices_list),
('--list', 's', ['static', 'stop']),
('-f', '', choices_from_function),
('--function', 'ch', ['choices', 'chatty']),
('-m', '', choices_from_method),
('--method', 'm', ['method', 'most']),
('-i', '', static_int_choices_list),
('--int', '1', ['1 ']),
('--int', '-', [-1, -2, -12]),
('--int', '-1', [-1, -12])
])
def test_autocomp_flag_choices_completion(ac_app, flag, text, completions):
import numbers
line = 'choices {} {}'.format(flag, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
# Numbers will be sorted in ascending order and then converted to strings by AutoCompleter
if all(isinstance(x, numbers.Number) for x in completions):
completions.sort()
completions = [str(x) for x in completions]
else:
completions.sort(key=ac_app.default_sort_key)
assert ac_app.completion_matches == completions
@pytest.mark.parametrize('pos, text, completions', [
(1, '', static_choices_list),
(1, 's', ['static', 'stop']),
(2, '', choices_from_function),
(2, 'ch', ['choices', 'chatty']),
(3, '', choices_from_method),
(3, 'm', ['method', 'most'])
])
def test_autocomp_positional_choices_completion(ac_app, pos, text, completions):
# Generate line were preceding positionals are already filled
line = 'choices {} {}'.format('foo ' * (pos - 1), text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
@pytest.mark.parametrize('flag, text, completions', [
('-f', '', completions_from_function),
('--function', 'f', ['function', 'fairly']),
('-m', '', completions_from_method),
('--method', 'm', ['method', 'missed'])
])
def test_autocomp_flag_completers(ac_app, flag, text, completions):
line = 'completer {} {}'.format(flag, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
@pytest.mark.parametrize('pos, text, completions', [
(1, '', completions_from_function),
(1, 'c', ['completions', 'complete']),
(2, '', completions_from_method),
(2, 'm', ['method', 'missed'])
])
def test_autocomp_positional_completers(ac_app, pos, text, completions):
# Generate line were preceding positionals are already filled
line = 'completer {} {}'.format('foo ' * (pos - 1), text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
def test_autocomp_blank_token(ac_app):
"""Force a blank token to make sure AutoCompleter consumes them like argparse does"""
from cmd2.argparse_completer import AutoCompleter
blank = ''
# Blank flag arg
text = ''
line = 'completer -m {} {}'.format(blank, text)
endidx = len(line)
begidx = endidx - len(text)
completer = AutoCompleter(ac_app.completer_parser, ac_app)
tokens = ['completer', '-f', blank, text]
completions = completer.complete_command(tokens, text, line, begidx, endidx)
assert completions == completions_from_function
# Blank positional arg
text = ''
line = 'completer {} {}'.format(blank, text)
endidx = len(line)
begidx = endidx - len(text)
completer = AutoCompleter(ac_app.completer_parser, ac_app)
tokens = ['completer', blank, text]
completions = completer.complete_command(tokens, text, line, begidx, endidx)
assert completions == completions_from_method
@pytest.mark.parametrize('num_aliases, show_description', [
# The number of completion results determines if the description field of CompletionItems gets displayed
# in the tab completions. The count must be greater than 1 and less than ac_app.max_completion_items,
# which defaults to 50.
(1, False),
(5, True),
(100, False)
])
def test_completion_items(ac_app, num_aliases, show_description):
# Create aliases
for i in range(0, num_aliases):
run_cmd(ac_app, 'alias create fake_alias{} help'.format(i))
assert len(ac_app.aliases) == num_aliases
text = 'fake_alias'
line = 'alias list {}'.format(text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
assert first_match is not None
assert len(ac_app.completion_matches) == num_aliases
assert len(ac_app.display_matches) == num_aliases
# If show_description is True, the alias's value will be in the display text
assert ('help' in ac_app.display_matches[0]) == show_description
@pytest.mark.parametrize('args, completions', [
# Flag with nargs = 2
('--set_value', set_value_choices),
('--set_value set', ['value', 'choices']),
# Both args are filled. At positional arg now.
('--set_value set value', positional_choices),
# Using the flag again will reset the choices available
('--set_value set value --set_value', set_value_choices),
# Flag with nargs = ONE_OR_MORE
('--one_or_more', one_or_more_choices),
('--one_or_more one', ['or', 'more', 'choices']),
# Flag with nargs = OPTIONAL
('--optional', optional_choices),
# Only one arg allowed for an OPTIONAL. At positional now.
('--optional optional', positional_choices),
# Flag with nargs range (1, 2)
('--range', range_choices),
('--range some', ['range', 'choices']),
# Already used 2 args so at positional
('--range some range', positional_choices),
# Flag with nargs = REMAINDER
('--remainder', remainder_choices),
('--remainder remainder ', ['choices ']),
# No more flags can appear after a REMAINDER flag)
('--remainder choices --set_value', ['remainder ']),
# Double dash ends the current flag
('--range choice --', positional_choices),
# Double dash ends a REMAINDER flag
('--remainder remainder --', positional_choices),
# No more flags after a double dash
('-- --one_or_more ', positional_choices),
# Consume positional
('', positional_choices),
('positional', ['the', 'choices']),
# Intermixed flag and positional
('positional --set_value', set_value_choices),
('positional --set_value set', ['choices', 'value']),
# Intermixed flag and positional with flag finishing
('positional --set_value set value', ['the', 'choices']),
('positional --range choice --', ['the', 'choices']),
# REMAINDER positional
('the positional', remainder_choices),
('the positional remainder', ['choices ']),
('the positional remainder choices', []),
# REMAINDER positional. Flags don't work in REMAINDER
('the positional --set_value', remainder_choices),
('the positional remainder --set_value', ['choices '])
])
def test_autcomp_nargs(ac_app, args, completions):
text = ''
line = 'nargs {} {}'.format(args, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
@pytest.mark.parametrize('command_and_args, text, is_error', [
# Flag is finished before moving on
('hint --flag foo --', '', False),
('hint --flag foo --help', '', False),
('hint --flag foo', '--', False),
('nargs --one_or_more one --', '', False),
('nargs --one_or_more one or --set_value', '', False),
('nargs --one_or_more one or more', '--', False),
('nargs --set_value set value --', '', False),
('nargs --set_value set value --one_or_more', '', False),
('nargs --set_value set value', '--', False),
('nargs --set_val set value', '--', False), # This exercises our abbreviated flag detection
('nargs --range choices --', '', False),
('nargs --range choices range --set_value', '', False),
('nargs --range range', '--', False),
# Flag is not finished before moving on
('hint --flag --', '', True),
('hint --flag --help', '', True),
('hint --flag', '--', True),
('nargs --one_or_more --', '', True),
('nargs --one_or_more --set_value', '', True),
('nargs --one_or_more', '--', True),
('nargs --set_value set --', '', True),
('nargs --set_value set --one_or_more', '', True),
('nargs --set_value set', '--', True),
('nargs --set_val set', '--', True), # This exercises our abbreviated flag detection
('nargs --range --', '', True),
('nargs --range --set_value', '', True),
('nargs --range', '--', True),
])
def test_unfinished_flag_error(ac_app, command_and_args, text, is_error, capsys):
line = '{} {}'.format(command_and_args, text)
endidx = len(line)
begidx = endidx - len(text)
complete_tester(text, line, begidx, endidx, ac_app)
out, err = capsys.readouterr()
assert is_error == all(x in out for x in ["Error: argument", "expected"])
def test_completion_items_default_header(ac_app):
from cmd2.argparse_completer import DEFAULT_DESCRIPTIVE_HEADER
text = ''
line = 'choices -n {}'.format(text)
endidx = len(line)
begidx = endidx - len(text)
# This positional argument did not provide a descriptive header, so it should be DEFAULT_DESCRIPTIVE_HEADER
complete_tester(text, line, begidx, endidx, ac_app)
assert DEFAULT_DESCRIPTIVE_HEADER in ac_app.completion_header
@pytest.mark.parametrize('command_and_args, text, has_hint', [
# Normal cases
('hint', '', True),
('hint --flag', '', True),
('hint --suppressed_help', '', False),
('hint --suppressed_hint', '--', False),
# Hint because flag does not have enough values to be considered finished
('nargs --one_or_more', '-', True),
# This flag has reached its minimum value count and therefore a new flag could start.
# However the flag can still consume values and the text is not a single prefix character.
# Therefor a hint will be shown.
('nargs --one_or_more choices', 'bad_completion', True),
# Like the previous case, but this time text is a single prefix character which will cause flag
# name completion to occur instead of a hint for the current flag.
('nargs --one_or_more choices', '-', False),
# Hint because this is a REMAINDER flag and therefore no more flag name completions occur.
('nargs --remainder', '-', True),
# No hint for the positional because text is a single prefix character which results in flag name completion
('hint', '-', False),
# Hint because this is a REMAINDER positional and therefore no more flag name completions occur.
('nargs the choices', '-', True),
('nargs the choices remainder', '-', True),
])
def test_autocomp_hint(ac_app, command_and_args, text, has_hint, capsys):
line = '{} {}'.format(command_and_args, text)
endidx = len(line)
begidx = endidx - len(text)
complete_tester(text, line, begidx, endidx, ac_app)
out, err = capsys.readouterr()
assert has_hint == ("Hint:\n" in out)
def test_autocomp_hint_no_help_text(ac_app, capsys):
text = ''
line = 'hint foo {}'.format(text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
out, err = capsys.readouterr()
assert first_match is None
assert not out == '''
Hint:
NO_HELP_POS
'''
@pytest.mark.parametrize('args, text', [
# Exercise a flag arg and choices function that raises a CompletionError
('--choice ', 'choice'),
# Exercise a positional arg and completer that raises a CompletionError
('', 'completer')
])
def test_completion_error(ac_app, capsys, args, text):
line = 'raise_completion_error {} {}'.format(args, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
out, err = capsys.readouterr()
assert first_match is None
assert "{} broke something".format(text) in out
@pytest.mark.parametrize('command_and_args, completions', [
# Exercise a choices function that receives arg_tokens dictionary
('arg_tokens choice subcmd', ['choice', 'subcmd']),
# Exercise a completer that receives arg_tokens dictionary
('arg_tokens completer subcmd fake', ['completer', 'subcmd']),
# Exercise overriding parent_arg from the subcommand
('arg_tokens completer subcmd --parent_arg override fake', ['override', 'subcmd'])
])
def test_arg_tokens(ac_app, command_and_args, completions):
text = ''
line = '{} {}'.format(command_and_args, text)
endidx = len(line)
begidx = endidx - len(text)
first_match = complete_tester(text, line, begidx, endidx, ac_app)
if completions:
assert first_match is not None
else:
assert first_match is None
assert ac_app.completion_matches == sorted(completions, key=ac_app.default_sort_key)
@pytest.mark.parametrize('command_and_args, text, output_contains, first_match', [
# Group isn't done. Hint will show for optional positional and no completions returned
('mutex', '', 'the optional positional', None),
# Group isn't done. Flag name will still complete.
('mutex', '--fl', '', '--flag '),
# Group isn't done. Flag hint will show.
('mutex --flag', '', 'the flag arg', None),
# Group finished by optional positional. No flag name will complete.
('mutex pos_val', '--fl', '', None),
# Group finished by optional positional. Error will display trying to complete the flag's value.
('mutex pos_val --flag', '', 'f/--flag: not allowed with argument optional_pos', None),
# Group finished by --flag. Optional positional will be skipped and last_arg will show its hint.
('mutex --flag flag_val', '', 'the last arg', None),
# Group finished by --flag. Other flag name won't complete.
('mutex --flag flag_val', '--oth', '', None),
# Group finished by --flag. Error will display trying to complete other flag's value.
('mutex --flag flag_val --other', '', '-o/--other_flag: not allowed with argument -f/--flag', None),
# Group finished by --flag. That same flag can be used again so it's hint will show.
('mutex --flag flag_val --flag', '', 'the flag arg', None)
])
def test_complete_mutex_group(ac_app, command_and_args, text, output_contains, first_match, capsys):
line = '{} {}'.format(command_and_args, text)
endidx = len(line)
begidx = endidx - len(text)
assert first_match == complete_tester(text, line, begidx, endidx, ac_app)
out, err = capsys.readouterr()
assert output_contains in out
def test_single_prefix_char():
from cmd2.argparse_completer import _single_prefix_char
parser = Cmd2ArgumentParser(prefix_chars='-+')
# Invalid
assert not _single_prefix_char('', parser)
assert not _single_prefix_char('--', parser)
assert not _single_prefix_char('-+', parser)
assert not _single_prefix_char('++has space', parser)
assert not _single_prefix_char('foo', parser)
# Valid
assert _single_prefix_char('-', parser)
assert _single_prefix_char('+', parser)
def test_looks_like_flag():
from cmd2.argparse_completer import _looks_like_flag
parser = Cmd2ArgumentParser()
# Does not start like a flag
assert not _looks_like_flag('', parser)
assert not _looks_like_flag('non-flag', parser)
assert not _looks_like_flag('-', parser)
assert not _looks_like_flag('--has space', parser)
assert not _looks_like_flag('-2', parser)
# Does start like a flag
assert _looks_like_flag('--', parser)
assert _looks_like_flag('-flag', parser)
assert _looks_like_flag('--flag', parser)
def test_complete_command_no_tokens(ac_app):
from cmd2.argparse_completer import AutoCompleter
parser = Cmd2ArgumentParser()
ac = AutoCompleter(parser, ac_app)
completions = ac.complete_command(tokens=[], text='', line='', begidx=0, endidx=0)
assert not completions
def test_complete_command_help_no_tokens(ac_app):
from cmd2.argparse_completer import AutoCompleter
parser = Cmd2ArgumentParser()
ac = AutoCompleter(parser, ac_app)
completions = ac.complete_subcommand_help(tokens=[], text='', line='', begidx=0, endidx=0)
assert not completions