mirror of
https://github.com/Stone-Red-Code/dvc.git
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65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
import logging
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import re
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from argparse import SUPPRESS, ArgumentParser
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from itertools import takewhile
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from typing import Tuple
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import pytest
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import shtab
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from dvc.cli import main
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from dvc.cli.parser import get_main_parser
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def command_tuples():
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root: Tuple[str, ...] = ()
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commands = [root]
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def recurse_parser(parser: ArgumentParser, parents: Tuple[str, ...] = root) -> None:
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for positional in parser._get_positional_actions():
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if positional.help != SUPPRESS and isinstance(positional.choices, dict):
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public_cmds = shtab.get_public_subcommands(positional)
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for subcmd, subparser in positional.choices.items():
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cmd = (*parents, subcmd)
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if subcmd in public_cmds:
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commands.append(cmd)
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recurse_parser(subparser, cmd)
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main_parser = get_main_parser()
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recurse_parser(main_parser)
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# the no. of commands will usually go up,
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# but if we ever remove commands and drop below, adjust the magic number accordingly
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assert len(commands) >= 112
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return sorted(commands)
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def ids(values):
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return "-".join(values) or "dvc"
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@pytest.mark.parametrize("command_tuples", command_tuples(), ids=ids)
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def test_help(caplog, capsys, command_tuples):
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with caplog.at_level(logging.INFO), pytest.raises(SystemExit) as e:
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main([*command_tuples, "--help"])
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assert e.value.code == 0
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assert not caplog.text
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out, err = capsys.readouterr()
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# validate metavars are all in lowercase
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usage = "\n".join(takewhile(lambda o: bool(o), out.splitlines()))
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message = (
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"metavars not lowercased, you are likely missing formatter_class=XXX "
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"in the command, where XXX should be any of the classes from "
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"`dvc.cli.formatter`, which automatically lowercases metavars.\n"
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"\nExample:\n"
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"\nfrom dvc.cli import formatter\n"
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"\nparser.add_parser(..., formatter_class=formatter.TextHelpFormatter)\n"
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)
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assert not re.findall(r"\b[A-Z]{2,}\b", usage, re.MULTILINE), message
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assert not err
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assert out
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