import logging
import multiprocessing
import os
+import re
import sys
import types
import unittest
from concurrent.futures import ThreadPoolExecutor
-from contextlib import contextmanager
+from contextlib import contextmanager, redirect_stderr
from dataclasses import replace
from io import BytesIO
from pathlib import Path
List,
Optional,
Sequence,
+ Type,
TypeVar,
Union,
)
import click
import pytest
-import re
from click import unstyle
from click.testing import CliRunner
from pathspec import PathSpec
dump_to_stderr,
ff,
fs,
+ get_case_path,
read_data,
+ read_data_from_file,
)
THIS_FILE = Path(__file__)
+EMPTY_CONFIG = THIS_DIR / "data" / "empty_pyproject.toml"
PY36_ARGS = [f"--target-version={version.name.lower()}" for version in PY36_VERSIONS]
DEFAULT_EXCLUDE = black.re_compile_maybe_verbose(black.const.DEFAULT_EXCLUDES)
DEFAULT_INCLUDE = black.re_compile_maybe_verbose(black.const.DEFAULT_INCLUDES)
os.unlink(tmp_file)
self.assertFormatEqual(expected, actual)
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_one_empty_line(self) -> None:
+ mode = black.Mode(preview=True)
+ for nl in ["\n", "\r\n"]:
+ source = expected = nl
+ assert_format(source, expected, mode=mode)
+
+ def test_one_empty_line_ff(self) -> None:
+ mode = black.Mode(preview=True)
+ for nl in ["\n", "\r\n"]:
+ expected = nl
+ tmp_file = Path(black.dump_to_file(nl))
+ if system() == "Windows":
+ # Writing files in text mode automatically uses the system newline,
+ # but in this case we don't want this for testing reasons. See:
+ # https://github.com/psf/black/pull/3348
+ with open(tmp_file, "wb") as f:
+ f.write(nl.encode("utf-8"))
+ try:
+ self.assertFalse(
+ ff(tmp_file, mode=mode, write_back=black.WriteBack.YES)
+ )
+ with open(tmp_file, "rb") as f:
+ actual = f.read().decode("utf8")
+ finally:
+ os.unlink(tmp_file)
+ self.assertFormatEqual(expected, actual)
+
def test_experimental_string_processing_warns(self) -> None:
self.assertWarns(
black.mode.Deprecated, black.Mode, experimental_string_processing=True
)
def test_piping(self) -> None:
- source, expected = read_data("src/black/__init__", data=False)
+ source, expected = read_data_from_file(PROJECT_ROOT / "src/black/__init__.py")
result = BlackRunner().invoke(
black.main,
- ["-", "--fast", f"--line-length={black.DEFAULT_LINE_LENGTH}"],
+ [
+ "-",
+ "--fast",
+ f"--line-length={black.DEFAULT_LINE_LENGTH}",
+ f"--config={EMPTY_CONFIG}",
+ ],
input=BytesIO(source.encode("utf8")),
)
self.assertEqual(result.exit_code, 0)
r"(STDIN|STDOUT)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d "
r"\+\d\d\d\d"
)
- source, _ = read_data("expression.py")
- expected, _ = read_data("expression.diff")
- config = THIS_DIR / "data" / "empty_pyproject.toml"
+ source, _ = read_data("simple_cases", "expression.py")
+ expected, _ = read_data("simple_cases", "expression.diff")
args = [
"-",
"--fast",
f"--line-length={black.DEFAULT_LINE_LENGTH}",
"--diff",
- f"--config={config}",
+ f"--config={EMPTY_CONFIG}",
]
result = BlackRunner().invoke(
black.main, args, input=BytesIO(source.encode("utf8"))
self.assertEqual(expected, actual)
def test_piping_diff_with_color(self) -> None:
- source, _ = read_data("expression.py")
- config = THIS_DIR / "data" / "empty_pyproject.toml"
+ source, _ = read_data("simple_cases", "expression.py")
args = [
"-",
"--fast",
f"--line-length={black.DEFAULT_LINE_LENGTH}",
"--diff",
"--color",
- f"--config={config}",
+ f"--config={EMPTY_CONFIG}",
]
result = BlackRunner().invoke(
black.main, args, input=BytesIO(source.encode("utf8"))
@patch("black.dump_to_file", dump_to_stderr)
def _test_wip(self) -> None:
- source, expected = read_data("wip")
+ source, expected = read_data("miscellaneous", "wip")
sys.settrace(tracefunc)
mode = replace(
DEFAULT_MODE,
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, black.FileMode())
- @unittest.expectedFailure
- @patch("black.dump_to_file", dump_to_stderr)
- def test_trailing_comma_optional_parens_stability1(self) -> None:
- source, _expected = read_data("trailing_comma_optional_parens1")
- actual = fs(source)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @unittest.expectedFailure
- @patch("black.dump_to_file", dump_to_stderr)
- def test_trailing_comma_optional_parens_stability2(self) -> None:
- source, _expected = read_data("trailing_comma_optional_parens2")
- actual = fs(source)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @unittest.expectedFailure
- @patch("black.dump_to_file", dump_to_stderr)
- def test_trailing_comma_optional_parens_stability3(self) -> None:
- source, _expected = read_data("trailing_comma_optional_parens3")
- actual = fs(source)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_trailing_comma_optional_parens_stability1_pass2(self) -> None:
- source, _expected = read_data("trailing_comma_optional_parens1")
- actual = fs(fs(source)) # this is what `format_file_contents` does with --safe
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_trailing_comma_optional_parens_stability2_pass2(self) -> None:
- source, _expected = read_data("trailing_comma_optional_parens2")
- actual = fs(fs(source)) # this is what `format_file_contents` does with --safe
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_trailing_comma_optional_parens_stability3_pass2(self) -> None:
- source, _expected = read_data("trailing_comma_optional_parens3")
- actual = fs(fs(source)) # this is what `format_file_contents` does with --safe
- black.assert_stable(source, actual, DEFAULT_MODE)
-
def test_pep_572_version_detection(self) -> None:
- source, _ = read_data("pep_572")
+ source, _ = read_data("py_38", "pep_572")
root = black.lib2to3_parse(source)
features = black.get_features_used(root)
self.assertIn(black.Feature.ASSIGNMENT_EXPRESSIONS, features)
self.assertIn(black.TargetVersion.PY38, versions)
def test_expression_ff(self) -> None:
- source, expected = read_data("expression")
+ source, expected = read_data("simple_cases", "expression.py")
tmp_file = Path(black.dump_to_file(source))
try:
self.assertTrue(ff(tmp_file, write_back=black.WriteBack.YES))
black.assert_stable(source, actual, DEFAULT_MODE)
def test_expression_diff(self) -> None:
- source, _ = read_data("expression.py")
- config = THIS_DIR / "data" / "empty_pyproject.toml"
- expected, _ = read_data("expression.diff")
+ source, _ = read_data("simple_cases", "expression.py")
+ expected, _ = read_data("simple_cases", "expression.diff")
tmp_file = Path(black.dump_to_file(source))
diff_header = re.compile(
rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
)
try:
result = BlackRunner().invoke(
- black.main, ["--diff", str(tmp_file), f"--config={config}"]
+ black.main, ["--diff", str(tmp_file), f"--config={EMPTY_CONFIG}"]
)
self.assertEqual(result.exit_code, 0)
finally:
self.assertEqual(expected, actual, msg)
def test_expression_diff_with_color(self) -> None:
- source, _ = read_data("expression.py")
- config = THIS_DIR / "data" / "empty_pyproject.toml"
- expected, _ = read_data("expression.diff")
+ source, _ = read_data("simple_cases", "expression.py")
+ expected, _ = read_data("simple_cases", "expression.diff")
tmp_file = Path(black.dump_to_file(source))
try:
result = BlackRunner().invoke(
- black.main, ["--diff", "--color", str(tmp_file), f"--config={config}"]
+ black.main,
+ ["--diff", "--color", str(tmp_file), f"--config={EMPTY_CONFIG}"],
)
finally:
os.unlink(tmp_file)
self.assertIn("\033[0m", actual)
def test_detect_pos_only_arguments(self) -> None:
- source, _ = read_data("pep_570")
+ source, _ = read_data("py_38", "pep_570")
root = black.lib2to3_parse(source)
features = black.get_features_used(root)
self.assertIn(black.Feature.POS_ONLY_ARGUMENTS, features)
versions = black.detect_target_versions(root)
self.assertIn(black.TargetVersion.PY38, versions)
+ def test_detect_debug_f_strings(self) -> None:
+ root = black.lib2to3_parse("""f"{x=}" """)
+ features = black.get_features_used(root)
+ self.assertIn(black.Feature.DEBUG_F_STRINGS, features)
+ versions = black.detect_target_versions(root)
+ self.assertIn(black.TargetVersion.PY38, versions)
+
+ root = black.lib2to3_parse(
+ """f"{x}"\nf'{"="}'\nf'{(x:=5)}'\nf'{f(a="3=")}'\nf'{x:=10}'\n"""
+ )
+ features = black.get_features_used(root)
+ self.assertNotIn(black.Feature.DEBUG_F_STRINGS, features)
+
+ # We don't yet support feature version detection in nested f-strings
+ root = black.lib2to3_parse(
+ """f"heard a rumour that { f'{1+1=}' } ... seems like it could be true" """
+ )
+ features = black.get_features_used(root)
+ self.assertNotIn(black.Feature.DEBUG_F_STRINGS, features)
+
@patch("black.dump_to_file", dump_to_stderr)
def test_string_quotes(self) -> None:
- source, expected = read_data("string_quotes")
+ source, expected = read_data("miscellaneous", "string_quotes")
mode = black.Mode(preview=True)
assert_format(source, expected, mode)
mode = replace(mode, string_normalization=False)
black.assert_equivalent(source, not_normalized)
black.assert_stable(source, not_normalized, mode=mode)
+ def test_skip_source_first_line(self) -> None:
+ source, _ = read_data("miscellaneous", "invalid_header")
+ tmp_file = Path(black.dump_to_file(source))
+ # Full source should fail (invalid syntax at header)
+ self.invokeBlack([str(tmp_file), "--diff", "--check"], exit_code=123)
+ # So, skipping the first line should work
+ result = BlackRunner().invoke(
+ black.main, [str(tmp_file), "-x", f"--config={EMPTY_CONFIG}"]
+ )
+ self.assertEqual(result.exit_code, 0)
+ with open(tmp_file, encoding="utf8") as f:
+ actual = f.read()
+ self.assertFormatEqual(source, actual)
+
+ def test_skip_source_first_line_when_mixing_newlines(self) -> None:
+ code_mixing_newlines = b"Header will be skipped\r\ni = [1,2,3]\nj = [1,2,3]\n"
+ expected = b"Header will be skipped\r\ni = [1, 2, 3]\nj = [1, 2, 3]\n"
+ with TemporaryDirectory() as workspace:
+ test_file = Path(workspace) / "skip_header.py"
+ test_file.write_bytes(code_mixing_newlines)
+ mode = replace(DEFAULT_MODE, skip_source_first_line=True)
+ ff(test_file, mode=mode, write_back=black.WriteBack.YES)
+ self.assertEqual(test_file.read_bytes(), expected)
+
def test_skip_magic_trailing_comma(self) -> None:
- source, _ = read_data("expression.py")
- expected, _ = read_data("expression_skip_magic_trailing_comma.diff")
+ source, _ = read_data("simple_cases", "expression")
+ expected, _ = read_data(
+ "miscellaneous", "expression_skip_magic_trailing_comma.diff"
+ )
tmp_file = Path(black.dump_to_file(source))
diff_header = re.compile(
rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
r"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d"
)
try:
- result = BlackRunner().invoke(black.main, ["-C", "--diff", str(tmp_file)])
+ result = BlackRunner().invoke(
+ black.main, ["-C", "--diff", str(tmp_file), f"--config={EMPTY_CONFIG}"]
+ )
self.assertEqual(result.exit_code, 0)
finally:
os.unlink(tmp_file)
@patch("black.dump_to_file", dump_to_stderr)
def test_async_as_identifier(self) -> None:
- source_path = (THIS_DIR / "data" / "async_as_identifier.py").resolve()
- source, expected = read_data("async_as_identifier")
+ source_path = get_case_path("miscellaneous", "async_as_identifier")
+ source, expected = read_data_from_file(source_path)
actual = fs(source)
self.assertFormatEqual(expected, actual)
major, minor = sys.version_info[:2]
@patch("black.dump_to_file", dump_to_stderr)
def test_python37(self) -> None:
- source_path = (THIS_DIR / "data" / "python37.py").resolve()
- source, expected = read_data("python37")
+ source_path = get_case_path("py_37", "python37")
+ source, expected = read_data_from_file(source_path)
actual = fs(source)
self.assertFormatEqual(expected, actual)
major, minor = sys.version_info[:2]
self.assertEqual(err_lines[-1], "error: cannot format e1: boom")
self.assertEqual(
unstyle(str(report)),
- "1 file reformatted, 2 files left unchanged, 1 file failed to"
- " reformat.",
+ (
+ "1 file reformatted, 2 files left unchanged, 1 file failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.done(Path("f3"), black.Changed.YES)
self.assertEqual(out_lines[-1], "reformatted f3")
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 1 file failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 1 file failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.failed(Path("e2"), "boom")
self.assertEqual(err_lines[-1], "error: cannot format e2: boom")
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.path_ignored(Path("wat"), "no match")
self.assertEqual(out_lines[-1], "wat ignored: no match")
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.done(Path("f4"), black.Changed.NO)
self.assertEqual(out_lines[-1], "f4 already well formatted, good job.")
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 3 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 3 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.check = True
self.assertEqual(
unstyle(str(report)),
- "2 files would be reformatted, 3 files would be left unchanged, 2 files"
- " would fail to reformat.",
+ (
+ "2 files would be reformatted, 3 files would be left unchanged, 2"
+ " files would fail to reformat."
+ ),
)
report.check = False
report.diff = True
self.assertEqual(
unstyle(str(report)),
- "2 files would be reformatted, 3 files would be left unchanged, 2 files"
- " would fail to reformat.",
+ (
+ "2 files would be reformatted, 3 files would be left unchanged, 2"
+ " files would fail to reformat."
+ ),
)
def test_report_quiet(self) -> None:
self.assertEqual(err_lines[-1], "error: cannot format e1: boom")
self.assertEqual(
unstyle(str(report)),
- "1 file reformatted, 2 files left unchanged, 1 file failed to"
- " reformat.",
+ (
+ "1 file reformatted, 2 files left unchanged, 1 file failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.done(Path("f3"), black.Changed.YES)
self.assertEqual(len(err_lines), 1)
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 1 file failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 1 file failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.failed(Path("e2"), "boom")
self.assertEqual(err_lines[-1], "error: cannot format e2: boom")
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.path_ignored(Path("wat"), "no match")
self.assertEqual(len(err_lines), 2)
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.done(Path("f4"), black.Changed.NO)
self.assertEqual(len(err_lines), 2)
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 3 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 3 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.check = True
self.assertEqual(
unstyle(str(report)),
- "2 files would be reformatted, 3 files would be left unchanged, 2 files"
- " would fail to reformat.",
+ (
+ "2 files would be reformatted, 3 files would be left unchanged, 2"
+ " files would fail to reformat."
+ ),
)
report.check = False
report.diff = True
self.assertEqual(
unstyle(str(report)),
- "2 files would be reformatted, 3 files would be left unchanged, 2 files"
- " would fail to reformat.",
+ (
+ "2 files would be reformatted, 3 files would be left unchanged, 2"
+ " files would fail to reformat."
+ ),
)
def test_report_normal(self) -> None:
self.assertEqual(err_lines[-1], "error: cannot format e1: boom")
self.assertEqual(
unstyle(str(report)),
- "1 file reformatted, 2 files left unchanged, 1 file failed to"
- " reformat.",
+ (
+ "1 file reformatted, 2 files left unchanged, 1 file failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.done(Path("f3"), black.Changed.YES)
self.assertEqual(out_lines[-1], "reformatted f3")
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 1 file failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 1 file failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.failed(Path("e2"), "boom")
self.assertEqual(err_lines[-1], "error: cannot format e2: boom")
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.path_ignored(Path("wat"), "no match")
self.assertEqual(len(err_lines), 2)
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 2 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 2 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.done(Path("f4"), black.Changed.NO)
self.assertEqual(len(err_lines), 2)
self.assertEqual(
unstyle(str(report)),
- "2 files reformatted, 3 files left unchanged, 2 files failed to"
- " reformat.",
+ (
+ "2 files reformatted, 3 files left unchanged, 2 files failed to"
+ " reformat."
+ ),
)
self.assertEqual(report.return_code, 123)
report.check = True
self.assertEqual(
unstyle(str(report)),
- "2 files would be reformatted, 3 files would be left unchanged, 2 files"
- " would fail to reformat.",
+ (
+ "2 files would be reformatted, 3 files would be left unchanged, 2"
+ " files would fail to reformat."
+ ),
)
report.check = False
report.diff = True
self.assertEqual(
unstyle(str(report)),
- "2 files would be reformatted, 3 files would be left unchanged, 2 files"
- " would fail to reformat.",
+ (
+ "2 files would be reformatted, 3 files would be left unchanged, 2"
+ " files would fail to reformat."
+ ),
)
def test_lib2to3_parse(self) -> None:
# since this makes some test cases of test_get_features_used()
# fails if it fails, this is tested first so that a useful case
# is identified
- simples, relaxed = read_data("decorators")
+ simples, relaxed = read_data("miscellaneous", "decorators")
# skip explanation comments at the top of the file
for simple_test in simples.split("##")[1:]:
node = black.lib2to3_parse(simple_test)
self.assertEqual(black.get_features_used(node), {Feature.NUMERIC_UNDERSCORES})
node = black.lib2to3_parse("123456\n")
self.assertEqual(black.get_features_used(node), set())
- source, expected = read_data("function")
+ source, expected = read_data("simple_cases", "function")
node = black.lib2to3_parse(source)
expected_features = {
Feature.TRAILING_COMMA_IN_CALL,
self.assertEqual(black.get_features_used(node), expected_features)
node = black.lib2to3_parse(expected)
self.assertEqual(black.get_features_used(node), expected_features)
- source, expected = read_data("expression")
+ source, expected = read_data("simple_cases", "expression")
node = black.lib2to3_parse(source)
self.assertEqual(black.get_features_used(node), set())
node = black.lib2to3_parse(expected)
self.assertEqual(
black.get_features_used(node), {Feature.ANN_ASSIGN_EXTENDED_RHS}
)
+ node = black.lib2to3_parse("try: pass\nexcept Something: pass")
+ self.assertEqual(black.get_features_used(node), set())
+ node = black.lib2to3_parse("try: pass\nexcept (*Something,): pass")
+ self.assertEqual(black.get_features_used(node), set())
+ node = black.lib2to3_parse("try: pass\nexcept *Group: pass")
+ self.assertEqual(black.get_features_used(node), {Feature.EXCEPT_STAR})
+ node = black.lib2to3_parse("a[*b]")
+ self.assertEqual(black.get_features_used(node), {Feature.VARIADIC_GENERICS})
+ node = black.lib2to3_parse("a[x, *y(), z] = t")
+ self.assertEqual(black.get_features_used(node), {Feature.VARIADIC_GENERICS})
+ node = black.lib2to3_parse("def fn(*args: *T): pass")
+ self.assertEqual(black.get_features_used(node), {Feature.VARIADIC_GENERICS})
def test_get_features_used_for_future_flags(self) -> None:
for src, features in [
@pytest.mark.incompatible_with_mypyc
def test_debug_visitor(self) -> None:
- source, _ = read_data("debug_visitor.py")
- expected, _ = read_data("debug_visitor.out")
+ source, _ = read_data("miscellaneous", "debug_visitor")
+ expected, _ = read_data("miscellaneous", "debug_visitor.out")
out_lines = []
err_lines = []
)
def test_format_file_contents(self) -> None:
- empty = ""
mode = DEFAULT_MODE
+ empty = ""
with self.assertRaises(black.NothingChanged):
black.format_file_contents(empty, mode=mode, fast=False)
just_nl = "\n"
black.format_file_contents(invalid, mode=mode, fast=False)
self.assertEqual(str(e.exception), "Cannot parse: 1:7: return if you can")
+ mode = black.Mode(preview=True)
+ just_crlf = "\r\n"
+ with self.assertRaises(black.NothingChanged):
+ black.format_file_contents(just_crlf, mode=mode, fast=False)
+ just_whitespace_nl = "\n\t\n \n\t \n \t\n\n"
+ actual = black.format_file_contents(just_whitespace_nl, mode=mode, fast=False)
+ self.assertEqual("\n", actual)
+ just_whitespace_crlf = "\r\n\t\r\n \r\n\t \r\n \t\r\n\r\n"
+ actual = black.format_file_contents(just_whitespace_crlf, mode=mode, fast=False)
+ self.assertEqual("\r\n", actual)
+
def test_endmarker(self) -> None:
n = black.lib2to3_parse("\n")
self.assertEqual(n.type, black.syms.file_input)
self.assertEqual("".join(err_lines), "")
@event_loop()
- @patch("black.ProcessPoolExecutor", MagicMock(side_effect=OSError))
+ @patch("concurrent.futures.ProcessPoolExecutor", MagicMock(side_effect=OSError))
def test_works_in_mono_process_only_environment(self) -> None:
with cache_dir() as workspace:
for f in [
def test_check_diff_use_together(self) -> None:
with cache_dir():
# Files which will be reformatted.
- src1 = (THIS_DIR / "data" / "string_quotes.py").resolve()
+ src1 = get_case_path("miscellaneous", "string_quotes")
self.invokeBlack([str(src1), "--diff", "--check"], exit_code=1)
# Files which will not be reformatted.
- src2 = (THIS_DIR / "data" / "composition.py").resolve()
+ src2 = get_case_path("simple_cases", "composition")
self.invokeBlack([str(src2), "--diff", "--check"])
# Multi file command.
self.invokeBlack([str(src1), str(src2), "--diff", "--check"], exit_code=1)
- def test_no_files(self) -> None:
+ def test_no_src_fails(self) -> None:
with cache_dir():
- # Without an argument, black exits with error code 0.
- self.invokeBlack([])
+ self.invokeBlack([], exit_code=1)
+
+ def test_src_and_code_fails(self) -> None:
+ with cache_dir():
+ self.invokeBlack([".", "-c", "0"], exit_code=1)
def test_broken_symlink(self) -> None:
with cache_dir() as workspace:
def test_single_file_force_pyi(self) -> None:
pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
- contents, expected = read_data("force_pyi")
+ contents, expected = read_data("miscellaneous", "force_pyi")
with cache_dir() as workspace:
path = (workspace / "file.py").resolve()
with open(path, "w") as fh:
def test_multi_file_force_pyi(self) -> None:
reg_mode = DEFAULT_MODE
pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
- contents, expected = read_data("force_pyi")
+ contents, expected = read_data("miscellaneous", "force_pyi")
with cache_dir() as workspace:
paths = [
(workspace / "file1.py").resolve(),
self.assertNotIn(str(path), normal_cache)
def test_pipe_force_pyi(self) -> None:
- source, expected = read_data("force_pyi")
+ source, expected = read_data("miscellaneous", "force_pyi")
result = CliRunner().invoke(
black.main, ["-", "-q", "--pyi"], input=BytesIO(source.encode("utf8"))
)
def test_single_file_force_py36(self) -> None:
reg_mode = DEFAULT_MODE
py36_mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
- source, expected = read_data("force_py36")
+ source, expected = read_data("miscellaneous", "force_py36")
with cache_dir() as workspace:
path = (workspace / "file.py").resolve()
with open(path, "w") as fh:
def test_multi_file_force_py36(self) -> None:
reg_mode = DEFAULT_MODE
py36_mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
- source, expected = read_data("force_py36")
+ source, expected = read_data("miscellaneous", "force_py36")
with cache_dir() as workspace:
paths = [
(workspace / "file1.py").resolve(),
self.assertNotIn(str(path), normal_cache)
def test_pipe_force_py36(self) -> None:
- source, expected = read_data("force_py36")
+ source, expected = read_data("miscellaneous", "force_py36")
result = CliRunner().invoke(
black.main,
["-", "-q", "--target-version=py36"],
report = MagicMock()
# Even with an existing file, since we are forcing stdin, black
# should output to stdout and not modify the file inplace
- p = Path(str(THIS_DIR / "data/collections.py"))
+ p = THIS_DIR / "data" / "simple_cases" / "collections.py"
# Make sure is_file actually returns True
self.assertTrue(p.is_file())
path = Path(f"__BLACK_STDIN_FILENAME__{p}")
report.done.assert_called_with(expected, black.Changed.YES)
def test_reformat_one_with_stdin_empty(self) -> None:
+ cases = [
+ ("", ""),
+ ("\n", "\n"),
+ ("\r\n", "\r\n"),
+ (" \t", ""),
+ (" \t\n\t ", "\n"),
+ (" \t\r\n\t ", "\r\n"),
+ ]
+
+ def _new_wrapper(
+ output: io.StringIO, io_TextIOWrapper: Type[io.TextIOWrapper]
+ ) -> Callable[[Any, Any], io.TextIOWrapper]:
+ def get_output(*args: Any, **kwargs: Any) -> io.TextIOWrapper:
+ if args == (sys.stdout.buffer,):
+ # It's `format_stdin_to_stdout()` calling `io.TextIOWrapper()`,
+ # return our mock object.
+ return output
+ # It's something else (i.e. `decode_bytes()`) calling
+ # `io.TextIOWrapper()`, pass through to the original implementation.
+ # See discussion in https://github.com/psf/black/pull/2489
+ return io_TextIOWrapper(*args, **kwargs)
+
+ return get_output
+
+ mode = black.Mode(preview=True)
+ for content, expected in cases:
+ output = io.StringIO()
+ io_TextIOWrapper = io.TextIOWrapper
+
+ with patch("io.TextIOWrapper", _new_wrapper(output, io_TextIOWrapper)):
+ try:
+ black.format_stdin_to_stdout(
+ fast=True,
+ content=content,
+ write_back=black.WriteBack.YES,
+ mode=mode,
+ )
+ except io.UnsupportedOperation:
+ pass # StringIO does not support detach
+ assert output.getvalue() == expected
+
+ # An empty string is the only test case for `preview=False`
output = io.StringIO()
- with patch("io.TextIOWrapper", lambda *args, **kwargs: output):
+ io_TextIOWrapper = io.TextIOWrapper
+ with patch("io.TextIOWrapper", _new_wrapper(output, io_TextIOWrapper)):
try:
black.format_stdin_to_stdout(
fast=True,
def test_required_version_matches_version(self) -> None:
self.invokeBlack(
- ["--required-version", black.__version__], exit_code=0, ignore_config=True
+ ["--required-version", black.__version__, "-c", "0"],
+ exit_code=0,
+ ignore_config=True,
)
- def test_required_version_does_not_match_version(self) -> None:
+ def test_required_version_matches_partial_version(self) -> None:
+ self.invokeBlack(
+ ["--required-version", black.__version__.split(".")[0], "-c", "0"],
+ exit_code=0,
+ ignore_config=True,
+ )
+
+ def test_required_version_does_not_match_on_minor_version(self) -> None:
self.invokeBlack(
- ["--required-version", "20.99b"], exit_code=1, ignore_config=True
+ ["--required-version", black.__version__.split(".")[0] + ".999", "-c", "0"],
+ exit_code=1,
+ ignore_config=True,
)
+ def test_required_version_does_not_match_version(self) -> None:
+ result = BlackRunner().invoke(
+ black.main,
+ ["--required-version", "20.99b", "-c", "0"],
+ )
+ self.assertEqual(result.exit_code, 1)
+ self.assertIn("required version", result.stderr)
+
def test_preserves_line_endings(self) -> None:
with TemporaryDirectory() as workspace:
test_file = Path(workspace) / "test.py"
if nl == "\n":
self.assertNotIn(b"\r\n", output)
+ def test_normalize_line_endings(self) -> None:
+ with TemporaryDirectory() as workspace:
+ test_file = Path(workspace) / "test.py"
+ for data, expected in (
+ (b"c\r\nc\n ", b"c\r\nc\r\n"),
+ (b"l\nl\r\n ", b"l\nl\n"),
+ ):
+ test_file.write_bytes(data)
+ ff(test_file, write_back=black.WriteBack.YES)
+ self.assertEqual(test_file.read_bytes(), expected)
+
def test_assert_equivalent_different_asts(self) -> None:
with self.assertRaises(AssertionError):
black.assert_equivalent("{}", "None")
def test_shhh_click(self) -> None:
try:
- from click import _unicodefun
- except ModuleNotFoundError:
+ from click import _unicodefun # type: ignore
+ except ImportError:
self.skipTest("Incompatible Click version")
- if not hasattr(_unicodefun, "_verify_python3_env"):
+
+ if not hasattr(_unicodefun, "_verify_python_env"):
self.skipTest("Incompatible Click version")
+
# First, let's see if Click is crashing with a preferred ASCII charset.
with patch("locale.getpreferredencoding") as gpe:
gpe.return_value = "ASCII"
with self.assertRaises(RuntimeError):
- _unicodefun._verify_python3_env() # type: ignore
+ _unicodefun._verify_python_env()
# Now, let's silence Click...
black.patch_click()
# ...and confirm it's silent.
with patch("locale.getpreferredencoding") as gpe:
gpe.return_value = "ASCII"
try:
- _unicodefun._verify_python3_env() # type: ignore
+ _unicodefun._verify_python_env()
except RuntimeError as re:
self.fail(f"`patch_click()` failed, exception still raised: {re}")
(src_dir.resolve(), "pyproject.toml"),
)
+ with change_directory(test_dir):
+ self.assertEqual(
+ black.find_project_root(("-",), stdin_filename="../src/a.py"),
+ (src_dir.resolve(), "pyproject.toml"),
+ )
+
+ @patch(
+ "black.files.find_user_pyproject_toml",
+ )
+ def test_find_pyproject_toml(self, find_user_pyproject_toml: MagicMock) -> None:
+ find_user_pyproject_toml.side_effect = RuntimeError()
+
+ with redirect_stderr(io.StringIO()) as stderr:
+ result = black.files.find_pyproject_toml(
+ path_search_start=(str(Path.cwd().root),)
+ )
+
+ assert result is None
+ err = stderr.getvalue()
+ assert "Ignoring user configuration" in err
+
@patch(
"black.files.find_user_pyproject_toml",
black.files.find_user_pyproject_toml.__wrapped__,
normalized_path = black.normalize_path_maybe_ignore(path, root, report)
self.assertEqual(normalized_path, "workspace/project")
+ def test_normalize_path_ignore_windows_junctions_outside_of_root(self) -> None:
+ if system() != "Windows":
+ return
+
+ with TemporaryDirectory() as workspace:
+ root = Path(workspace)
+ junction_dir = root / "junction"
+ junction_target_outside_of_root = root / ".."
+ os.system(f"mklink /J {junction_dir} {junction_target_outside_of_root}")
+
+ report = black.Report(verbose=True)
+ normalized_path = black.normalize_path_maybe_ignore(
+ junction_dir, root, report
+ )
+ # Manually delete for Python < 3.8
+ os.system(f"rmdir {junction_dir}")
+
+ self.assertEqual(normalized_path, None)
+
def test_newline_comment_interaction(self) -> None:
source = "class A:\\\r\n# type: ignore\n pass\n"
output = black.format_str(source, mode=DEFAULT_MODE)
black.assert_stable(source, output, mode=DEFAULT_MODE)
def test_bpo_2142_workaround(self) -> None:
-
# https://bugs.python.org/issue2142
- source, _ = read_data("missing_final_newline.py")
+ source, _ = read_data("miscellaneous", "missing_final_newline")
# read_data adds a trailing newline
source = source.rstrip()
- expected, _ = read_data("missing_final_newline.diff")
+ expected, _ = read_data("miscellaneous", "missing_final_newline.diff")
tmp_file = Path(black.dump_to_file(source, ensure_final_newline=False))
diff_header = re.compile(
rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
def test_cache_multiple_files(self) -> None:
mode = DEFAULT_MODE
with cache_dir() as workspace, patch(
- "black.ProcessPoolExecutor", new=ThreadPoolExecutor
+ "concurrent.futures.ProcessPoolExecutor", new=ThreadPoolExecutor
):
one = (workspace / "one.py").resolve()
with one.open("w") as fobj:
src = (workspace / f"test{tag}.py").resolve()
with src.open("w") as fobj:
fobj.write("print('hello')")
- with patch("black.Manager", wraps=multiprocessing.Manager) as mgr:
+ with patch(
+ "black.concurrency.Manager", wraps=multiprocessing.Manager
+ ) as mgr:
cmd = ["--diff", str(workspace)]
if color:
cmd.append("--color")
str(cached): black.get_cache_info(cached),
str(cached_but_changed): (0.0, 0),
}
- todo, done = black.filter_cached(
+ todo, done = black.cache.filter_cached(
cache, {uncached, cached, cached_but_changed}
)
assert todo == {uncached, cached_but_changed}
def test_failed_formatting_does_not_get_cached(self) -> None:
mode = DEFAULT_MODE
with cache_dir() as workspace, patch(
- "black.ProcessPoolExecutor", new=ThreadPoolExecutor
+ "concurrent.futures.ProcessPoolExecutor", new=ThreadPoolExecutor
):
failing = (workspace / "failing.py").resolve()
with failing.open("w") as fobj:
ctx.obj["root"] = base
assert_collected_sources(src, expected, ctx=ctx, extend_exclude=r"/exclude/")
+ def test_gitignore_used_on_multiple_sources(self) -> None:
+ root = Path(DATA_DIR / "gitignore_used_on_multiple_sources")
+ expected = [
+ root / "dir1" / "b.py",
+ root / "dir2" / "b.py",
+ ]
+ ctx = FakeContext()
+ ctx.obj["root"] = root
+ src = [root / "dir1", root / "dir2"]
+ assert_collected_sources(src, expected, ctx=ctx)
+
@patch("black.find_project_root", lambda *args: (THIS_DIR.resolve(), None))
def test_exclude_for_issue_1572(self) -> None:
# Exclude shouldn't touch files that were explicitly given to Black through the
None,
None,
report,
- gitignore,
+ {path: gitignore},
verbose=False,
quiet=False,
)
None,
None,
report,
- root_gitignore,
+ {path: root_gitignore},
verbose=False,
quiet=False,
)
)
assert sorted(expected) == sorted(sources)
+ def test_nested_gitignore_directly_in_source_directory(self) -> None:
+ # https://github.com/psf/black/issues/2598
+ path = Path(DATA_DIR / "nested_gitignore_tests")
+ src = Path(path / "root" / "child")
+ expected = [src / "a.py", src / "c.py"]
+ assert_collected_sources([src], expected)
+
def test_invalid_gitignore(self) -> None:
path = THIS_DIR / "data" / "invalid_gitignore_tests"
empty_config = path / "pyproject.toml"
gitignore = path / "a" / ".gitignore"
assert f"Could not parse {gitignore}" in result.stderr_bytes.decode()
+ def test_gitignore_that_ignores_subfolders(self) -> None:
+ # If gitignore with */* is in root
+ root = Path(DATA_DIR / "ignore_subfolders_gitignore_tests" / "subdir")
+ expected = [root / "b.py"]
+ ctx = FakeContext()
+ ctx.obj["root"] = root
+ assert_collected_sources([root], expected, ctx=ctx)
+
+ # If .gitignore with */* is nested
+ root = Path(DATA_DIR / "ignore_subfolders_gitignore_tests")
+ expected = [
+ root / "a.py",
+ root / "subdir" / "b.py",
+ ]
+ ctx = FakeContext()
+ ctx.obj["root"] = root
+ assert_collected_sources([root], expected, ctx=ctx)
+
+ # If command is executed from outer dir
+ root = Path(DATA_DIR / "ignore_subfolders_gitignore_tests")
+ target = root / "subdir"
+ expected = [target / "b.py"]
+ ctx = FakeContext()
+ ctx.obj["root"] = root
+ assert_collected_sources([target], expected, ctx=ctx)
+
def test_empty_include(self) -> None:
path = DATA_DIR / "include_exclude_tests"
src = [path]
path.iterdir.return_value = [child]
child.resolve.return_value = Path("/a/b/c")
child.as_posix.return_value = "/a/b/c"
- child.is_symlink.return_value = True
try:
list(
black.gen_python_files(
None,
None,
report,
- gitignore,
+ {path: gitignore},
verbose=False,
quiet=False,
)
pytest.fail(f"`get_python_files_in_dir()` failed: {ve}")
path.iterdir.assert_called_once()
child.resolve.assert_called_once()
- child.is_symlink.assert_called_once()
- # `child` should behave like a strange file which resolved path is clearly
- # outside of the `root` directory.
- child.is_symlink.return_value = False
- with pytest.raises(ValueError):
- list(
- black.gen_python_files(
- path.iterdir(),
- root,
- include,
- exclude,
- None,
- None,
- report,
- gitignore,
- verbose=False,
- quiet=False,
- )
- )
- path.iterdir.assert_called()
- assert path.iterdir.call_count == 2
- child.resolve.assert_called()
- assert child.resolve.call_count == 2
- child.is_symlink.assert_called()
- assert child.is_symlink.call_count == 2
@patch("black.find_project_root", lambda *args: (THIS_DIR.resolve(), None))
def test_get_sources_with_stdin(self) -> None:
projects / etc / vim.git / blobdiff