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main: `args` must be a list, not tuple (#6791) 

Passing in a tuple crashes in `_prepareconfig`:

        def test_invoke_with_tuple(self):
    >       pytest.main(("-h",))

    src/_pytest/config/__init__.py:82: in main
        config = _prepareconfig(args, plugins)
    src/_pytest/config/__init__.py:229: in _prepareconfig
        return pluginmanager.hook.pytest_cmdline_parse(
    …
    src/_pytest/helpconfig.py:98: in pytest_cmdline_parse
        config = outcome.get_result()  # type: Config
    src/_pytest/config/__init__.py:808: in pytest_cmdline_parse
        self.parse(args)
    src/_pytest/config/__init__.py:1017: in parse
        self._preparse(args, addopts=addopts)
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

        def _preparse(self, args: List[str], addopts: bool = True) -> None:
            …
            if addopts:
                ini_addopts = self.getini("addopts")
                if ini_addopts:
    >               args[:] = self._validate_args(ini_addopts, "via addopts config") + args
    E               TypeError: can only concatenate list (not "tuple") to list

    addopts    = True
    args       = ('-h',)
    env_addopts = ''
    ini_addopts = ['-rfEX', …]

    src/_pytest/config/__init__.py:956: TypeError: can only concatenate list (not "tuple") to list

Might be worth handling (converting it to a list for example), but it
was documented to be a list to begin with when removing support for
strings (a7e401656).
This commit is contained in:
Daniel Hahler 2020-02-22 13:16:46 +01:00 committed by GitHub
parent 7c0d1cad40
commit 478a244f5e
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 6 additions and 4 deletions
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8
src/_pytest/config/__init__.py
View File

@ -233,13 +233,15 @@ def get_plugin_manager():
return get_config().pluginmanager
def _prepareconfig(args=None, plugins=None):
def _prepareconfig(
args: Optional[Union[py.path.local, List[str]]] = None, plugins=None
):
if args is None:
args = sys.argv[1:]
elif isinstance(args, py.path.local):
args = [str(args)]
elif not isinstance(args, (tuple, list)):
msg = "`args` parameter expected to be a list or tuple of strings, got: {!r} (type: {})"
elif not isinstance(args, list):
msg = "`args` parameter expected to be a list of strings, got: {!r} (type: {})"
raise TypeError(msg.format(args, type(args)))
config = get_config(args, plugins)

2
testing/acceptance_test.py
View File

@ -606,7 +606,7 @@ class TestInvocationVariants:
def test_invoke_with_invalid_type(self):
with pytest.raises(
TypeError, match="expected to be a list or tuple of strings, got: '-h'"
TypeError, match="expected to be a list of strings, got: '-h'"
):
pytest.main("-h")