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from __future__ import annotations
import os.path
import pytest
from flake8 import utils
from flake8.discover_files import _filenames_from
from flake8.discover_files import expand_paths
@pytest.fixture
def files_dir(tmpdir):
"""Create test dir for testing filenames_from."""
with tmpdir.as_cwd():
tmpdir.join("a/b/c.py").ensure()
tmpdir.join("a/b/d.py").ensure()
tmpdir.join("a/b/e/f.py").ensure()
yield tmpdir
def _noop(path):
return False
def _normpath(s):
return s.replace("/", os.sep)
def _normpaths(pths):
return {_normpath(pth) for pth in pths}
@pytest.mark.usefixtures("files_dir")
def test_filenames_from_a_directory():
"""Verify that filenames_from walks a directory."""
filenames = set(_filenames_from(_normpath("a/b/"), predicate=_noop))
# should include all files
expected = _normpaths(("a/b/c.py", "a/b/d.py", "a/b/e/f.py"))
assert filenames == expected
@pytest.mark.usefixtures("files_dir")
def test_filenames_from_a_directory_with_a_predicate():
"""Verify that predicates filter filenames_from."""
filenames = set(
_filenames_from(
arg=_normpath("a/b/"),
predicate=lambda path: path.endswith(_normpath("b/c.py")),
)
)
# should not include c.py
expected = _normpaths(("a/b/d.py", "a/b/e/f.py"))
assert filenames == expected
@pytest.mark.usefixtures("files_dir")
def test_filenames_from_a_directory_with_a_predicate_from_the_current_dir():
"""Verify that predicates filter filenames_from."""
filenames = set(
_filenames_from(
arg=_normpath("./a/b"),
predicate=lambda path: path == "c.py",
)
)
# none should have matched the predicate so all returned
expected = _normpaths(("./a/b/c.py", "./a/b/d.py", "./a/b/e/f.py"))
assert filenames == expected
@pytest.mark.usefixtures("files_dir")
def test_filenames_from_a_single_file():
"""Verify that we simply yield that filename."""
filenames = set(_filenames_from(_normpath("a/b/c.py"), predicate=_noop))
assert filenames == {_normpath("a/b/c.py")}
def test_filenames_from_a_single_file_does_not_exist():
"""Verify that a passed filename which does not exist is returned back."""
filenames = set(_filenames_from(_normpath("d/n/e.py"), predicate=_noop))
assert filenames == {_normpath("d/n/e.py")}
def test_filenames_from_exclude_doesnt_exclude_directory_names(tmpdir):
"""Verify that we don't greedily exclude subdirs."""
tmpdir.join("1/dont_return_me.py").ensure()
tmpdir.join("2/1/return_me.py").ensure()
exclude = [tmpdir.join("1").strpath]
def predicate(pth):
return utils.fnmatch(os.path.abspath(pth), exclude)
with tmpdir.as_cwd():
filenames = list(_filenames_from(".", predicate=predicate))
assert filenames == [os.path.join(".", "2", "1", "return_me.py")]
def test_filenames_from_predicate_applies_to_initial_arg(tmp_path):
"""Test that the predicate is also applied to the passed argument."""
fname = str(tmp_path.joinpath("f.py"))
ret = tuple(_filenames_from(fname, predicate=lambda _: True))
assert ret == ()
def test_filenames_from_predicate_applies_to_dirname(tmp_path):
"""Test that the predicate can filter whole directories."""
a_dir = tmp_path.joinpath("a")
a_dir.mkdir()
a_dir.joinpath("b.py").touch()
b_py = tmp_path.joinpath("b.py")
b_py.touch()
def predicate(p):
# filter out the /a directory
return p.endswith("a")
ret = tuple(_filenames_from(str(tmp_path), predicate=predicate))
assert ret == (str(b_py),)
def _expand_paths(
*,
paths=(".",),
stdin_display_name="stdin",
filename_patterns=("*.py",),
exclude=(),
):
return set(
expand_paths(
paths=paths,
stdin_display_name=stdin_display_name,
filename_patterns=filename_patterns,
exclude=exclude,
)
)
@pytest.mark.usefixtures("files_dir")
def test_expand_paths_honors_exclude():
expected = _normpaths(("./a/b/c.py", "./a/b/e/f.py"))
assert _expand_paths(exclude=["d.py"]) == expected
@pytest.mark.usefixtures("files_dir")
def test_expand_paths_defaults_to_dot():
expected = _normpaths(("./a/b/c.py", "./a/b/d.py", "./a/b/e/f.py"))
assert _expand_paths(paths=()) == expected
def test_default_stdin_name_is_not_filtered():
assert _expand_paths(paths=("-",)) == {"-"}
def test_alternate_stdin_name_is_filtered():
ret = _expand_paths(
paths=("-",),
stdin_display_name="wat",
exclude=("wat",),
)
assert ret == set()
def test_filename_included_even_if_not_matching_include(tmp_path):
some_file = str(tmp_path.joinpath("some/file"))
assert _expand_paths(paths=(some_file,)) == {some_file}
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