711 lines
29 KiB
Python
711 lines
29 KiB
Python
#!/usr/bin/env python3
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import asyncio
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from concurrent.futures import ThreadPoolExecutor
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from contextlib import contextmanager
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from functools import partial
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from io import StringIO
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import os
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from pathlib import Path
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import sys
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from tempfile import TemporaryDirectory
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from typing import Any, List, Tuple, Iterator
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import unittest
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from unittest.mock import patch
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from click import unstyle
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from click.testing import CliRunner
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import black
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ll = 88
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ff = partial(black.format_file_in_place, line_length=ll, fast=True)
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fs = partial(black.format_str, line_length=ll)
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THIS_FILE = Path(__file__)
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THIS_DIR = THIS_FILE.parent
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EMPTY_LINE = "# EMPTY LINE WITH WHITESPACE" + " (this comment will be removed)"
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def dump_to_stderr(*output: str) -> str:
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return "\n" + "\n".join(output) + "\n"
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def read_data(name: str) -> Tuple[str, str]:
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"""read_data('test_name') -> 'input', 'output'"""
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if not name.endswith((".py", ".out", ".diff")):
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name += ".py"
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_input: List[str] = []
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_output: List[str] = []
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with open(THIS_DIR / name, "r", encoding="utf8") as test:
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lines = test.readlines()
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result = _input
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for line in lines:
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line = line.replace(EMPTY_LINE, "")
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if line.rstrip() == "# output":
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result = _output
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continue
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result.append(line)
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if _input and not _output:
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# If there's no output marker, treat the entire file as already pre-formatted.
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_output = _input[:]
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return "".join(_input).strip() + "\n", "".join(_output).strip() + "\n"
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@contextmanager
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def cache_dir(exists: bool = True) -> Iterator[Path]:
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with TemporaryDirectory() as workspace:
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cache_dir = Path(workspace)
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if not exists:
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cache_dir = cache_dir / "new"
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with patch("black.CACHE_DIR", cache_dir):
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yield cache_dir
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@contextmanager
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def event_loop(close: bool) -> Iterator[None]:
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policy = asyncio.get_event_loop_policy()
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old_loop = policy.get_event_loop()
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loop = policy.new_event_loop()
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asyncio.set_event_loop(loop)
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try:
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yield
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finally:
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policy.set_event_loop(old_loop)
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if close:
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loop.close()
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class BlackTestCase(unittest.TestCase):
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maxDiff = None
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def assertFormatEqual(self, expected: str, actual: str) -> None:
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if actual != expected and not os.environ.get("SKIP_AST_PRINT"):
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bdv: black.DebugVisitor[Any]
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black.out("Expected tree:", fg="green")
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try:
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exp_node = black.lib2to3_parse(expected)
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bdv = black.DebugVisitor()
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list(bdv.visit(exp_node))
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except Exception as ve:
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black.err(str(ve))
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black.out("Actual tree:", fg="red")
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try:
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exp_node = black.lib2to3_parse(actual)
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bdv = black.DebugVisitor()
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list(bdv.visit(exp_node))
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except Exception as ve:
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black.err(str(ve))
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self.assertEqual(expected, actual)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_self(self) -> None:
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source, expected = read_data("test_black")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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self.assertFalse(ff(THIS_FILE))
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@patch("black.dump_to_file", dump_to_stderr)
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def test_black(self) -> None:
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source, expected = read_data("../black")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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self.assertFalse(ff(THIS_DIR / ".." / "black.py"))
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def test_piping(self) -> None:
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source, expected = read_data("../black")
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hold_stdin, hold_stdout = sys.stdin, sys.stdout
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try:
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sys.stdin, sys.stdout = StringIO(source), StringIO()
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sys.stdin.name = "<stdin>"
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black.format_stdin_to_stdout(
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line_length=ll, fast=True, write_back=black.WriteBack.YES
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)
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sys.stdout.seek(0)
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actual = sys.stdout.read()
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finally:
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sys.stdin, sys.stdout = hold_stdin, hold_stdout
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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def test_piping_diff(self) -> None:
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source, _ = read_data("expression.py")
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expected, _ = read_data("expression.diff")
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hold_stdin, hold_stdout = sys.stdin, sys.stdout
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try:
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sys.stdin, sys.stdout = StringIO(source), StringIO()
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sys.stdin.name = "<stdin>"
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black.format_stdin_to_stdout(
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line_length=ll, fast=True, write_back=black.WriteBack.DIFF
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)
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sys.stdout.seek(0)
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actual = sys.stdout.read()
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finally:
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sys.stdin, sys.stdout = hold_stdin, hold_stdout
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actual = actual.rstrip() + "\n" # the diff output has a trailing space
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self.assertEqual(expected, actual)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_setup(self) -> None:
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source, expected = read_data("../setup")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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self.assertFalse(ff(THIS_DIR / ".." / "setup.py"))
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@patch("black.dump_to_file", dump_to_stderr)
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def test_function(self) -> None:
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source, expected = read_data("function")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_function2(self) -> None:
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source, expected = read_data("function2")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_expression(self) -> None:
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source, expected = read_data("expression")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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def test_expression_ff(self) -> None:
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source, expected = read_data("expression")
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tmp_file = Path(black.dump_to_file(source))
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try:
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self.assertTrue(ff(tmp_file, write_back=black.WriteBack.YES))
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with open(tmp_file, encoding="utf8") as f:
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actual = f.read()
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finally:
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os.unlink(tmp_file)
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self.assertFormatEqual(expected, actual)
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with patch("black.dump_to_file", dump_to_stderr):
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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def test_expression_diff(self) -> None:
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source, _ = read_data("expression.py")
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expected, _ = read_data("expression.diff")
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tmp_file = Path(black.dump_to_file(source))
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hold_stdout = sys.stdout
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try:
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sys.stdout = StringIO()
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self.assertTrue(ff(tmp_file, write_back=black.WriteBack.DIFF))
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sys.stdout.seek(0)
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actual = sys.stdout.read()
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actual = actual.replace(str(tmp_file), "<stdin>")
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finally:
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sys.stdout = hold_stdout
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os.unlink(tmp_file)
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actual = actual.rstrip() + "\n" # the diff output has a trailing space
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if expected != actual:
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dump = black.dump_to_file(actual)
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msg = (
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f"Expected diff isn't equal to the actual. If you made changes "
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f"to expression.py and this is an anticipated difference, "
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f"overwrite tests/expression.diff with {dump}"
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)
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self.assertEqual(expected, actual, msg)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_fstring(self) -> None:
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source, expected = read_data("fstring")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_string_quotes(self) -> None:
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source, expected = read_data("string_quotes")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_slices(self) -> None:
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source, expected = read_data("slices")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_comments(self) -> None:
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source, expected = read_data("comments")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_comments2(self) -> None:
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source, expected = read_data("comments2")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_comments3(self) -> None:
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source, expected = read_data("comments3")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_comments4(self) -> None:
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source, expected = read_data("comments4")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_comments5(self) -> None:
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source, expected = read_data("comments5")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_cantfit(self) -> None:
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source, expected = read_data("cantfit")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_import_spacing(self) -> None:
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source, expected = read_data("import_spacing")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_composition(self) -> None:
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source, expected = read_data("composition")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_empty_lines(self) -> None:
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source, expected = read_data("empty_lines")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_string_prefixes(self) -> None:
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source, expected = read_data("string_prefixes")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_python2(self) -> None:
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source, expected = read_data("python2")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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# black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_python2_unicode_literals(self) -> None:
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source, expected = read_data("python2_unicode_literals")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_fmtonoff(self) -> None:
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source, expected = read_data("fmtonoff")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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@patch("black.dump_to_file", dump_to_stderr)
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def test_remove_empty_parentheses_after_class(self) -> None:
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source, expected = read_data("class_blank_parentheses")
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actual = fs(source)
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self.assertFormatEqual(expected, actual)
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black.assert_equivalent(source, actual)
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black.assert_stable(source, actual, line_length=ll)
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def test_report(self) -> None:
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report = black.Report()
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out_lines = []
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err_lines = []
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def out(msg: str, **kwargs: Any) -> None:
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out_lines.append(msg)
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def err(msg: str, **kwargs: Any) -> None:
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err_lines.append(msg)
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with patch("black.out", out), patch("black.err", err):
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report.done(Path("f1"), black.Changed.NO)
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self.assertEqual(len(out_lines), 1)
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self.assertEqual(len(err_lines), 0)
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self.assertEqual(out_lines[-1], "f1 already well formatted, good job.")
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self.assertEqual(unstyle(str(report)), "1 file left unchanged.")
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self.assertEqual(report.return_code, 0)
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report.done(Path("f2"), black.Changed.YES)
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self.assertEqual(len(out_lines), 2)
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self.assertEqual(len(err_lines), 0)
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self.assertEqual(out_lines[-1], "reformatted f2")
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self.assertEqual(
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unstyle(str(report)), "1 file reformatted, 1 file left unchanged."
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)
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report.done(Path("f3"), black.Changed.CACHED)
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self.assertEqual(len(out_lines), 3)
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self.assertEqual(len(err_lines), 0)
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self.assertEqual(
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out_lines[-1], "f3 wasn't modified on disk since last run."
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)
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self.assertEqual(
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unstyle(str(report)), "1 file reformatted, 2 files left unchanged."
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)
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self.assertEqual(report.return_code, 0)
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report.check = True
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self.assertEqual(report.return_code, 1)
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report.check = False
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report.failed(Path("e1"), "boom")
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self.assertEqual(len(out_lines), 3)
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self.assertEqual(len(err_lines), 1)
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self.assertEqual(err_lines[-1], "error: cannot format e1: boom")
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self.assertEqual(
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unstyle(str(report)),
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"1 file reformatted, 2 files left unchanged, "
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"1 file failed to reformat.",
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)
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self.assertEqual(report.return_code, 123)
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report.done(Path("f3"), black.Changed.YES)
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self.assertEqual(len(out_lines), 4)
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self.assertEqual(len(err_lines), 1)
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self.assertEqual(out_lines[-1], "reformatted f3")
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self.assertEqual(
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unstyle(str(report)),
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"2 files reformatted, 2 files left unchanged, "
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"1 file failed to reformat.",
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)
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self.assertEqual(report.return_code, 123)
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report.failed(Path("e2"), "boom")
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self.assertEqual(len(out_lines), 4)
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self.assertEqual(len(err_lines), 2)
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self.assertEqual(err_lines[-1], "error: cannot format e2: boom")
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self.assertEqual(
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unstyle(str(report)),
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"2 files reformatted, 2 files left unchanged, "
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"2 files failed to reformat.",
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)
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self.assertEqual(report.return_code, 123)
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report.done(Path("f4"), black.Changed.NO)
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self.assertEqual(len(out_lines), 5)
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self.assertEqual(len(err_lines), 2)
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self.assertEqual(out_lines[-1], "f4 already well formatted, good job.")
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self.assertEqual(
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unstyle(str(report)),
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"2 files reformatted, 3 files left unchanged, "
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"2 files failed to reformat.",
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)
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self.assertEqual(report.return_code, 123)
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report.check = True
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self.assertEqual(
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unstyle(str(report)),
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"2 files would be reformatted, 3 files would be left unchanged, "
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"2 files would fail to reformat.",
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)
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def test_is_python36(self) -> None:
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node = black.lib2to3_parse("def f(*, arg): ...\n")
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self.assertFalse(black.is_python36(node))
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node = black.lib2to3_parse("def f(*, arg,): ...\n")
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self.assertTrue(black.is_python36(node))
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node = black.lib2to3_parse("def f(*, arg): f'string'\n")
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self.assertTrue(black.is_python36(node))
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source, expected = read_data("function")
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node = black.lib2to3_parse(source)
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self.assertTrue(black.is_python36(node))
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node = black.lib2to3_parse(expected)
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self.assertTrue(black.is_python36(node))
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source, expected = read_data("expression")
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node = black.lib2to3_parse(source)
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self.assertFalse(black.is_python36(node))
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node = black.lib2to3_parse(expected)
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self.assertFalse(black.is_python36(node))
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def test_get_future_imports(self) -> None:
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node = black.lib2to3_parse("\n")
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self.assertEqual(set(), black.get_future_imports(node))
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node = black.lib2to3_parse("from __future__ import black\n")
|
|
self.assertEqual({"black"}, black.get_future_imports(node))
|
|
node = black.lib2to3_parse("from __future__ import multiple, imports\n")
|
|
self.assertEqual({"multiple", "imports"}, black.get_future_imports(node))
|
|
node = black.lib2to3_parse("from __future__ import (parenthesized, imports)\n")
|
|
self.assertEqual({"parenthesized", "imports"}, black.get_future_imports(node))
|
|
node = black.lib2to3_parse(
|
|
"from __future__ import multiple\nfrom __future__ import imports\n"
|
|
)
|
|
self.assertEqual({"multiple", "imports"}, black.get_future_imports(node))
|
|
node = black.lib2to3_parse("# comment\nfrom __future__ import black\n")
|
|
self.assertEqual({"black"}, black.get_future_imports(node))
|
|
node = black.lib2to3_parse('"""docstring"""\nfrom __future__ import black\n')
|
|
self.assertEqual({"black"}, black.get_future_imports(node))
|
|
node = black.lib2to3_parse("some(other, code)\nfrom __future__ import black\n")
|
|
self.assertEqual(set(), black.get_future_imports(node))
|
|
node = black.lib2to3_parse("from some.module import black\n")
|
|
self.assertEqual(set(), black.get_future_imports(node))
|
|
|
|
def test_debug_visitor(self) -> None:
|
|
source, _ = read_data("debug_visitor.py")
|
|
expected, _ = read_data("debug_visitor.out")
|
|
out_lines = []
|
|
err_lines = []
|
|
|
|
def out(msg: str, **kwargs: Any) -> None:
|
|
out_lines.append(msg)
|
|
|
|
def err(msg: str, **kwargs: Any) -> None:
|
|
err_lines.append(msg)
|
|
|
|
with patch("black.out", out), patch("black.err", err):
|
|
black.DebugVisitor.show(source)
|
|
actual = "\n".join(out_lines) + "\n"
|
|
log_name = ""
|
|
if expected != actual:
|
|
log_name = black.dump_to_file(*out_lines)
|
|
self.assertEqual(
|
|
expected,
|
|
actual,
|
|
f"AST print out is different. Actual version dumped to {log_name}",
|
|
)
|
|
|
|
def test_format_file_contents(self) -> None:
|
|
empty = ""
|
|
with self.assertRaises(black.NothingChanged):
|
|
black.format_file_contents(empty, line_length=ll, fast=False)
|
|
just_nl = "\n"
|
|
with self.assertRaises(black.NothingChanged):
|
|
black.format_file_contents(just_nl, line_length=ll, fast=False)
|
|
same = "l = [1, 2, 3]\n"
|
|
with self.assertRaises(black.NothingChanged):
|
|
black.format_file_contents(same, line_length=ll, fast=False)
|
|
different = "l = [1,2,3]"
|
|
expected = same
|
|
actual = black.format_file_contents(different, line_length=ll, fast=False)
|
|
self.assertEqual(expected, actual)
|
|
invalid = "return if you can"
|
|
with self.assertRaises(ValueError) as e:
|
|
black.format_file_contents(invalid, line_length=ll, fast=False)
|
|
self.assertEqual(str(e.exception), "Cannot parse: 1:7: return if you can")
|
|
|
|
def test_endmarker(self) -> None:
|
|
n = black.lib2to3_parse("\n")
|
|
self.assertEqual(n.type, black.syms.file_input)
|
|
self.assertEqual(len(n.children), 1)
|
|
self.assertEqual(n.children[0].type, black.token.ENDMARKER)
|
|
|
|
@unittest.skipIf(os.environ.get("SKIP_AST_PRINT"), "user set SKIP_AST_PRINT")
|
|
def test_assertFormatEqual(self) -> None:
|
|
out_lines = []
|
|
err_lines = []
|
|
|
|
def out(msg: str, **kwargs: Any) -> None:
|
|
out_lines.append(msg)
|
|
|
|
def err(msg: str, **kwargs: Any) -> None:
|
|
err_lines.append(msg)
|
|
|
|
with patch("black.out", out), patch("black.err", err):
|
|
with self.assertRaises(AssertionError):
|
|
self.assertFormatEqual("l = [1, 2, 3]", "l = [1, 2, 3,]")
|
|
|
|
out_str = "".join(out_lines)
|
|
self.assertTrue("Expected tree:" in out_str)
|
|
self.assertTrue("Actual tree:" in out_str)
|
|
self.assertEqual("".join(err_lines), "")
|
|
|
|
def test_cache_broken_file(self) -> None:
|
|
with cache_dir() as workspace:
|
|
cache_file = black.get_cache_file(black.DEFAULT_LINE_LENGTH)
|
|
with cache_file.open("w") as fobj:
|
|
fobj.write("this is not a pickle")
|
|
self.assertEqual(black.read_cache(black.DEFAULT_LINE_LENGTH), {})
|
|
src = (workspace / "test.py").resolve()
|
|
with src.open("w") as fobj:
|
|
fobj.write("print('hello')")
|
|
result = CliRunner().invoke(black.main, [str(src)])
|
|
self.assertEqual(result.exit_code, 0)
|
|
cache = black.read_cache(black.DEFAULT_LINE_LENGTH)
|
|
self.assertIn(src, cache)
|
|
|
|
def test_cache_single_file_already_cached(self) -> None:
|
|
with cache_dir() as workspace:
|
|
src = (workspace / "test.py").resolve()
|
|
with src.open("w") as fobj:
|
|
fobj.write("print('hello')")
|
|
black.write_cache({}, [src], black.DEFAULT_LINE_LENGTH)
|
|
result = CliRunner().invoke(black.main, [str(src)])
|
|
self.assertEqual(result.exit_code, 0)
|
|
with src.open("r") as fobj:
|
|
self.assertEqual(fobj.read(), "print('hello')")
|
|
|
|
@event_loop(close=False)
|
|
def test_cache_multiple_files(self) -> None:
|
|
with cache_dir() as workspace, patch(
|
|
"black.ProcessPoolExecutor", new=ThreadPoolExecutor
|
|
):
|
|
one = (workspace / "one.py").resolve()
|
|
with one.open("w") as fobj:
|
|
fobj.write("print('hello')")
|
|
two = (workspace / "two.py").resolve()
|
|
with two.open("w") as fobj:
|
|
fobj.write("print('hello')")
|
|
black.write_cache({}, [one], black.DEFAULT_LINE_LENGTH)
|
|
result = CliRunner().invoke(black.main, [str(workspace)])
|
|
self.assertEqual(result.exit_code, 0)
|
|
with one.open("r") as fobj:
|
|
self.assertEqual(fobj.read(), "print('hello')")
|
|
with two.open("r") as fobj:
|
|
self.assertEqual(fobj.read(), 'print("hello")\n')
|
|
cache = black.read_cache(black.DEFAULT_LINE_LENGTH)
|
|
self.assertIn(one, cache)
|
|
self.assertIn(two, cache)
|
|
|
|
def test_no_cache_when_writeback_diff(self) -> None:
|
|
with cache_dir() as workspace:
|
|
src = (workspace / "test.py").resolve()
|
|
with src.open("w") as fobj:
|
|
fobj.write("print('hello')")
|
|
result = CliRunner().invoke(black.main, [str(src), "--diff"])
|
|
self.assertEqual(result.exit_code, 0)
|
|
cache_file = black.get_cache_file(black.DEFAULT_LINE_LENGTH)
|
|
self.assertFalse(cache_file.exists())
|
|
|
|
def test_no_cache_when_stdin(self) -> None:
|
|
with cache_dir():
|
|
result = CliRunner().invoke(black.main, ["-"], input="print('hello')")
|
|
self.assertEqual(result.exit_code, 0)
|
|
cache_file = black.get_cache_file(black.DEFAULT_LINE_LENGTH)
|
|
self.assertFalse(cache_file.exists())
|
|
|
|
def test_read_cache_no_cachefile(self) -> None:
|
|
with cache_dir():
|
|
self.assertEqual(black.read_cache(black.DEFAULT_LINE_LENGTH), {})
|
|
|
|
def test_write_cache_read_cache(self) -> None:
|
|
with cache_dir() as workspace:
|
|
src = (workspace / "test.py").resolve()
|
|
src.touch()
|
|
black.write_cache({}, [src], black.DEFAULT_LINE_LENGTH)
|
|
cache = black.read_cache(black.DEFAULT_LINE_LENGTH)
|
|
self.assertIn(src, cache)
|
|
self.assertEqual(cache[src], black.get_cache_info(src))
|
|
|
|
def test_filter_cached(self) -> None:
|
|
with TemporaryDirectory() as workspace:
|
|
path = Path(workspace)
|
|
uncached = (path / "uncached").resolve()
|
|
cached = (path / "cached").resolve()
|
|
cached_but_changed = (path / "changed").resolve()
|
|
uncached.touch()
|
|
cached.touch()
|
|
cached_but_changed.touch()
|
|
cache = {cached: black.get_cache_info(cached), cached_but_changed: (0.0, 0)}
|
|
todo, done = black.filter_cached(
|
|
cache, [uncached, cached, cached_but_changed]
|
|
)
|
|
self.assertEqual(todo, [uncached, cached_but_changed])
|
|
self.assertEqual(done, [cached])
|
|
|
|
def test_write_cache_creates_directory_if_needed(self) -> None:
|
|
with cache_dir(exists=False) as workspace:
|
|
self.assertFalse(workspace.exists())
|
|
black.write_cache({}, [], black.DEFAULT_LINE_LENGTH)
|
|
self.assertTrue(workspace.exists())
|
|
|
|
@event_loop(close=False)
|
|
def test_failed_formatting_does_not_get_cached(self) -> None:
|
|
with cache_dir() as workspace, patch(
|
|
"black.ProcessPoolExecutor", new=ThreadPoolExecutor
|
|
):
|
|
failing = (workspace / "failing.py").resolve()
|
|
with failing.open("w") as fobj:
|
|
fobj.write("not actually python")
|
|
clean = (workspace / "clean.py").resolve()
|
|
with clean.open("w") as fobj:
|
|
fobj.write('print("hello")\n')
|
|
result = CliRunner().invoke(black.main, [str(workspace)])
|
|
self.assertEqual(result.exit_code, 123)
|
|
cache = black.read_cache(black.DEFAULT_LINE_LENGTH)
|
|
self.assertNotIn(failing, cache)
|
|
self.assertIn(clean, cache)
|
|
|
|
def test_write_cache_write_fail(self) -> None:
|
|
with cache_dir(), patch.object(Path, "open") as mock:
|
|
mock.side_effect = OSError
|
|
black.write_cache({}, [], black.DEFAULT_LINE_LENGTH)
|
|
|
|
def test_check_diff_use_together(self) -> None:
|
|
with cache_dir():
|
|
# Files which will be reformatted.
|
|
src1 = (THIS_DIR / "string_quotes.py").resolve()
|
|
result = CliRunner().invoke(black.main, [str(src1), "--diff", "--check"])
|
|
self.assertEqual(result.exit_code, 1)
|
|
|
|
# Files which will not be reformatted.
|
|
src2 = (THIS_DIR / "composition.py").resolve()
|
|
result = CliRunner().invoke(black.main, [str(src2), "--diff", "--check"])
|
|
self.assertEqual(result.exit_code, 0)
|
|
|
|
# Multi file command.
|
|
result = CliRunner().invoke(
|
|
black.main, [str(src1), str(src2), "--diff", "--check"]
|
|
)
|
|
self.assertEqual(result.exit_code, 1)
|
|
|
|
def test_no_files(self) -> None:
|
|
with cache_dir():
|
|
# Without an argument, black exits with error code 0.
|
|
result = CliRunner().invoke(black.main, [])
|
|
self.assertEqual(result.exit_code, 0)
|
|
|
|
def test_read_cache_line_lengths(self) -> None:
|
|
with cache_dir() as workspace:
|
|
path = (workspace / "file.py").resolve()
|
|
path.touch()
|
|
black.write_cache({}, [path], 1)
|
|
one = black.read_cache(1)
|
|
self.assertIn(path, one)
|
|
two = black.read_cache(2)
|
|
self.assertNotIn(path, two)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|