X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/2ad642754b531d4fd42829966e84ee0ac435257e..e7b312fb434483e0332643ae1e9736257f4f60c1:/tests/test_black.py diff --git a/tests/test_black.py b/tests/test_black.py index 1c22e54..7389da9 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -1,14 +1,20 @@ #!/usr/bin/env python3 +import asyncio +from concurrent.futures import ThreadPoolExecutor +from contextlib import contextmanager from functools import partial from io import StringIO import os from pathlib import Path import sys -from typing import Any, List, Tuple +from tempfile import TemporaryDirectory +from typing import Any, List, Tuple, Iterator import unittest from unittest.mock import patch +import re from click import unstyle +from click.testing import CliRunner import black @@ -17,25 +23,25 @@ ff = partial(black.format_file_in_place, line_length=ll, fast=True) fs = partial(black.format_str, line_length=ll) THIS_FILE = Path(__file__) THIS_DIR = THIS_FILE.parent -EMPTY_LINE = '# EMPTY LINE WITH WHITESPACE' + ' (this comment will be removed)' +EMPTY_LINE = "# EMPTY LINE WITH WHITESPACE" + " (this comment will be removed)" def dump_to_stderr(*output: str) -> str: - return '\n' + '\n'.join(output) + '\n' + return "\n" + "\n".join(output) + "\n" def read_data(name: str) -> Tuple[str, str]: """read_data('test_name') -> 'input', 'output'""" - if not name.endswith(('.py', '.out')): - name += '.py' + if not name.endswith((".py", ".pyi", ".out", ".diff")): + name += ".py" _input: List[str] = [] _output: List[str] = [] - with open(THIS_DIR / name, 'r', encoding='utf8') as test: + with open(THIS_DIR / name, "r", encoding="utf8") as test: lines = test.readlines() result = _input for line in lines: - line = line.replace(EMPTY_LINE, '') - if line.rstrip() == '# output': + line = line.replace(EMPTY_LINE, "") + if line.rstrip() == "# output": result = _output continue @@ -43,23 +49,48 @@ def read_data(name: str) -> Tuple[str, str]: if _input and not _output: # If there's no output marker, treat the entire file as already pre-formatted. _output = _input[:] - return ''.join(_input).strip() + '\n', ''.join(_output).strip() + '\n' + return "".join(_input).strip() + "\n", "".join(_output).strip() + "\n" + + +@contextmanager +def cache_dir(exists: bool = True) -> Iterator[Path]: + with TemporaryDirectory() as workspace: + cache_dir = Path(workspace) + if not exists: + cache_dir = cache_dir / "new" + with patch("black.CACHE_DIR", cache_dir): + yield cache_dir + + +@contextmanager +def event_loop(close: bool) -> Iterator[None]: + policy = asyncio.get_event_loop_policy() + old_loop = policy.get_event_loop() + loop = policy.new_event_loop() + asyncio.set_event_loop(loop) + try: + yield + + finally: + policy.set_event_loop(old_loop) + if close: + loop.close() class BlackTestCase(unittest.TestCase): maxDiff = None def assertFormatEqual(self, expected: str, actual: str) -> None: - if actual != expected and not os.environ.get('SKIP_AST_PRINT'): + if actual != expected and not os.environ.get("SKIP_AST_PRINT"): bdv: black.DebugVisitor[Any] - black.out('Expected tree:', fg='green') + black.out("Expected tree:", fg="green") try: exp_node = black.lib2to3_parse(expected) bdv = black.DebugVisitor() list(bdv.visit(exp_node)) except Exception as ve: black.err(str(ve)) - black.out('Actual tree:', fg='red') + black.out("Actual tree:", fg="red") try: exp_node = black.lib2to3_parse(actual) bdv = black.DebugVisitor() @@ -70,7 +101,7 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_self(self) -> None: - source, expected = read_data('test_black') + source, expected = read_data("test_black") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -79,20 +110,22 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_black(self) -> None: - source, expected = read_data('../black') + source, expected = read_data("../black") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) black.assert_stable(source, actual, line_length=ll) - self.assertFalse(ff(THIS_DIR / '..' / 'black.py')) + self.assertFalse(ff(THIS_DIR / ".." / "black.py")) def test_piping(self) -> None: - source, expected = read_data('../black') + source, expected = read_data("../black") hold_stdin, hold_stdout = sys.stdin, sys.stdout try: sys.stdin, sys.stdout = StringIO(source), StringIO() - sys.stdin.name = '' - black.format_stdin_to_stdout(line_length=ll, fast=True, write_back=True) + sys.stdin.name = "" + black.format_stdin_to_stdout( + line_length=ll, fast=True, write_back=black.WriteBack.YES + ) sys.stdout.seek(0) actual = sys.stdout.read() finally: @@ -101,18 +134,43 @@ class BlackTestCase(unittest.TestCase): black.assert_equivalent(source, actual) black.assert_stable(source, actual, line_length=ll) + def test_piping_diff(self) -> None: + source, _ = read_data("expression.py") + expected, _ = read_data("expression.diff") + hold_stdin, hold_stdout = sys.stdin, sys.stdout + try: + sys.stdin, sys.stdout = StringIO(source), StringIO() + sys.stdin.name = "" + black.format_stdin_to_stdout( + line_length=ll, fast=True, write_back=black.WriteBack.DIFF + ) + sys.stdout.seek(0) + actual = sys.stdout.read() + finally: + sys.stdin, sys.stdout = hold_stdin, hold_stdout + actual = actual.rstrip() + "\n" # the diff output has a trailing space + self.assertEqual(expected, actual) + @patch("black.dump_to_file", dump_to_stderr) def test_setup(self) -> None: - source, expected = read_data('../setup') + source, expected = read_data("../setup") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) black.assert_stable(source, actual, line_length=ll) - self.assertFalse(ff(THIS_DIR / '..' / 'setup.py')) + self.assertFalse(ff(THIS_DIR / ".." / "setup.py")) @patch("black.dump_to_file", dump_to_stderr) def test_function(self) -> None: - source, expected = read_data('function') + source, expected = read_data("function") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + + @patch("black.dump_to_file", dump_to_stderr) + def test_function2(self) -> None: + source, expected = read_data("function2") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -120,15 +178,74 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_expression(self) -> None: - source, expected = read_data('expression') + source, expected = read_data("expression") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) black.assert_stable(source, actual, line_length=ll) + def test_expression_ff(self) -> None: + source, expected = read_data("expression") + tmp_file = Path(black.dump_to_file(source)) + try: + self.assertTrue(ff(tmp_file, write_back=black.WriteBack.YES)) + with open(tmp_file, encoding="utf8") as f: + actual = f.read() + finally: + os.unlink(tmp_file) + self.assertFormatEqual(expected, actual) + with patch("black.dump_to_file", dump_to_stderr): + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + + def test_expression_diff(self) -> None: + source, _ = read_data("expression.py") + expected, _ = read_data("expression.diff") + tmp_file = Path(black.dump_to_file(source)) + hold_stdout = sys.stdout + try: + sys.stdout = StringIO() + self.assertTrue(ff(tmp_file, write_back=black.WriteBack.DIFF)) + sys.stdout.seek(0) + actual = sys.stdout.read() + actual = actual.replace(str(tmp_file), "") + finally: + sys.stdout = hold_stdout + os.unlink(tmp_file) + actual = actual.rstrip() + "\n" # the diff output has a trailing space + if expected != actual: + dump = black.dump_to_file(actual) + msg = ( + f"Expected diff isn't equal to the actual. If you made changes " + f"to expression.py and this is an anticipated difference, " + f"overwrite tests/expression.diff with {dump}" + ) + self.assertEqual(expected, actual, msg) + @patch("black.dump_to_file", dump_to_stderr) def test_fstring(self) -> None: - source, expected = read_data('fstring') + source, expected = read_data("fstring") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + + @patch("black.dump_to_file", dump_to_stderr) + def test_string_quotes(self) -> None: + source, expected = read_data("string_quotes") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + mode = black.FileMode.NO_STRING_NORMALIZATION + not_normalized = fs(source, mode=mode) + self.assertFormatEqual(source, not_normalized) + black.assert_equivalent(source, not_normalized) + black.assert_stable(source, not_normalized, line_length=ll, mode=mode) + + @patch("black.dump_to_file", dump_to_stderr) + def test_slices(self) -> None: + source, expected = read_data("slices") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -136,7 +253,7 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_comments(self) -> None: - source, expected = read_data('comments') + source, expected = read_data("comments") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -144,7 +261,7 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_comments2(self) -> None: - source, expected = read_data('comments2') + source, expected = read_data("comments2") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -152,7 +269,7 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_comments3(self) -> None: - source, expected = read_data('comments3') + source, expected = read_data("comments3") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -160,7 +277,15 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_comments4(self) -> None: - source, expected = read_data('comments4') + source, expected = read_data("comments4") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + + @patch("black.dump_to_file", dump_to_stderr) + def test_comments5(self) -> None: + source, expected = read_data("comments5") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -168,7 +293,7 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_cantfit(self) -> None: - source, expected = read_data('cantfit') + source, expected = read_data("cantfit") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -176,7 +301,7 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_import_spacing(self) -> None: - source, expected = read_data('import_spacing') + source, expected = read_data("import_spacing") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -184,7 +309,7 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_composition(self) -> None: - source, expected = read_data('composition') + source, expected = read_data("composition") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -192,7 +317,15 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_empty_lines(self) -> None: - source, expected = read_data('empty_lines') + source, expected = read_data("empty_lines") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + + @patch("black.dump_to_file", dump_to_stderr) + def test_string_prefixes(self) -> None: + source, expected = read_data("string_prefixes") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -200,15 +333,46 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_python2(self) -> None: - source, expected = read_data('python2') + source, expected = read_data("python2") actual = fs(source) self.assertFormatEqual(expected, actual) # black.assert_equivalent(source, actual) black.assert_stable(source, actual, line_length=ll) + @patch("black.dump_to_file", dump_to_stderr) + def test_python2_unicode_literals(self) -> None: + source, expected = read_data("python2_unicode_literals") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_stable(source, actual, line_length=ll) + + @patch("black.dump_to_file", dump_to_stderr) + def test_stub(self) -> None: + mode = black.FileMode.PYI + source, expected = read_data("stub.pyi") + actual = fs(source, mode=mode) + self.assertFormatEqual(expected, actual) + black.assert_stable(source, actual, line_length=ll, mode=mode) + @patch("black.dump_to_file", dump_to_stderr) def test_fmtonoff(self) -> None: - source, expected = read_data('fmtonoff') + source, expected = read_data("fmtonoff") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + + @patch("black.dump_to_file", dump_to_stderr) + def test_remove_empty_parentheses_after_class(self) -> None: + source, expected = read_data("class_blank_parentheses") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, line_length=ll) + + @patch("black.dump_to_file", dump_to_stderr) + def test_new_line_between_class_and_code(self) -> None: + source, expected = read_data("class_methods_new_line") actual = fs(source) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -226,68 +390,77 @@ class BlackTestCase(unittest.TestCase): err_lines.append(msg) with patch("black.out", out), patch("black.err", err): - report.done(Path('f1'), changed=False) + report.done(Path("f1"), black.Changed.NO) self.assertEqual(len(out_lines), 1) self.assertEqual(len(err_lines), 0) - self.assertEqual(out_lines[-1], 'f1 already well formatted, good job.') - self.assertEqual(unstyle(str(report)), '1 file left unchanged.') + self.assertEqual(out_lines[-1], "f1 already well formatted, good job.") + self.assertEqual(unstyle(str(report)), "1 file left unchanged.") self.assertEqual(report.return_code, 0) - report.done(Path('f2'), changed=True) + report.done(Path("f2"), black.Changed.YES) self.assertEqual(len(out_lines), 2) self.assertEqual(len(err_lines), 0) - self.assertEqual(out_lines[-1], 'reformatted f2') + self.assertEqual(out_lines[-1], "reformatted f2") + self.assertEqual( + unstyle(str(report)), "1 file reformatted, 1 file left unchanged." + ) + report.done(Path("f3"), black.Changed.CACHED) + self.assertEqual(len(out_lines), 3) + self.assertEqual(len(err_lines), 0) + self.assertEqual( + out_lines[-1], "f3 wasn't modified on disk since last run." + ) self.assertEqual( - unstyle(str(report)), '1 file reformatted, 1 file left unchanged.' + unstyle(str(report)), "1 file reformatted, 2 files left unchanged." ) self.assertEqual(report.return_code, 0) report.check = True self.assertEqual(report.return_code, 1) report.check = False - report.failed(Path('e1'), 'boom') - self.assertEqual(len(out_lines), 2) + report.failed(Path("e1"), "boom") + self.assertEqual(len(out_lines), 3) self.assertEqual(len(err_lines), 1) - self.assertEqual(err_lines[-1], 'error: cannot format e1: boom') + self.assertEqual(err_lines[-1], "error: cannot format e1: boom") self.assertEqual( unstyle(str(report)), - '1 file reformatted, 1 file 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'), changed=True) - self.assertEqual(len(out_lines), 3) + report.done(Path("f3"), black.Changed.YES) + self.assertEqual(len(out_lines), 4) self.assertEqual(len(err_lines), 1) - self.assertEqual(out_lines[-1], 'reformatted f3') + self.assertEqual(out_lines[-1], "reformatted f3") self.assertEqual( unstyle(str(report)), - '2 files reformatted, 1 file 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(len(out_lines), 3) + report.failed(Path("e2"), "boom") + self.assertEqual(len(out_lines), 4) self.assertEqual(len(err_lines), 2) - self.assertEqual(err_lines[-1], 'error: cannot format e2: boom') + self.assertEqual(err_lines[-1], "error: cannot format e2: boom") self.assertEqual( unstyle(str(report)), - '2 files reformatted, 1 file 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'), changed=False) - self.assertEqual(len(out_lines), 4) + report.done(Path("f4"), black.Changed.NO) + self.assertEqual(len(out_lines), 5) self.assertEqual(len(err_lines), 2) - self.assertEqual(out_lines[-1], 'f4 already well formatted, good job.') + self.assertEqual(out_lines[-1], "f4 already well formatted, good job.") self.assertEqual( unstyle(str(report)), - '2 files reformatted, 2 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, 2 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_is_python36(self) -> None: @@ -297,20 +470,42 @@ class BlackTestCase(unittest.TestCase): self.assertTrue(black.is_python36(node)) node = black.lib2to3_parse("def f(*, arg): f'string'\n") self.assertTrue(black.is_python36(node)) - source, expected = read_data('function') + source, expected = read_data("function") node = black.lib2to3_parse(source) self.assertTrue(black.is_python36(node)) node = black.lib2to3_parse(expected) self.assertTrue(black.is_python36(node)) - source, expected = read_data('expression') + source, expected = read_data("expression") node = black.lib2to3_parse(source) self.assertFalse(black.is_python36(node)) node = black.lib2to3_parse(expected) self.assertFalse(black.is_python36(node)) + def test_get_future_imports(self) -> None: + node = black.lib2to3_parse("\n") + self.assertEqual(set(), black.get_future_imports(node)) + 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') + source, _ = read_data("debug_visitor.py") + expected, _ = read_data("debug_visitor.out") out_lines = [] err_lines = [] @@ -322,8 +517,8 @@ class BlackTestCase(unittest.TestCase): with patch("black.out", out), patch("black.err", err): black.DebugVisitor.show(source) - actual = '\n'.join(out_lines) + '\n' - log_name = '' + actual = "\n".join(out_lines) + "\n" + log_name = "" if expected != actual: log_name = black.dump_to_file(*out_lines) self.assertEqual( @@ -332,6 +527,395 @@ class BlackTestCase(unittest.TestCase): 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: + mode = black.FileMode.AUTO_DETECT + with cache_dir() as workspace: + cache_file = black.get_cache_file(black.DEFAULT_LINE_LENGTH, mode) + with cache_file.open("w") as fobj: + fobj.write("this is not a pickle") + self.assertEqual(black.read_cache(black.DEFAULT_LINE_LENGTH, mode), {}) + 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, mode) + self.assertIn(src, cache) + + def test_cache_single_file_already_cached(self) -> None: + mode = black.FileMode.AUTO_DETECT + 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, mode) + 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: + mode = black.FileMode.AUTO_DETECT + 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, mode) + 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, mode) + self.assertIn(one, cache) + self.assertIn(two, cache) + + def test_no_cache_when_writeback_diff(self) -> None: + mode = black.FileMode.AUTO_DETECT + 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, mode) + self.assertFalse(cache_file.exists()) + + def test_no_cache_when_stdin(self) -> None: + mode = black.FileMode.AUTO_DETECT + 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, mode) + self.assertFalse(cache_file.exists()) + + def test_read_cache_no_cachefile(self) -> None: + mode = black.FileMode.AUTO_DETECT + with cache_dir(): + self.assertEqual(black.read_cache(black.DEFAULT_LINE_LENGTH, mode), {}) + + def test_write_cache_read_cache(self) -> None: + mode = black.FileMode.AUTO_DETECT + with cache_dir() as workspace: + src = (workspace / "test.py").resolve() + src.touch() + black.write_cache({}, [src], black.DEFAULT_LINE_LENGTH, mode) + cache = black.read_cache(black.DEFAULT_LINE_LENGTH, mode) + 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: + mode = black.FileMode.AUTO_DETECT + with cache_dir(exists=False) as workspace: + self.assertFalse(workspace.exists()) + black.write_cache({}, [], black.DEFAULT_LINE_LENGTH, mode) + self.assertTrue(workspace.exists()) + + @event_loop(close=False) + def test_failed_formatting_does_not_get_cached(self) -> None: + mode = black.FileMode.AUTO_DETECT + 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, mode) + self.assertNotIn(failing, cache) + self.assertIn(clean, cache) + + def test_write_cache_write_fail(self) -> None: + mode = black.FileMode.AUTO_DETECT + with cache_dir(), patch.object(Path, "open") as mock: + mock.side_effect = OSError + black.write_cache({}, [], black.DEFAULT_LINE_LENGTH, mode) + + @event_loop(close=False) + 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, result.output) + + 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_broken_symlink(self) -> None: + with cache_dir() as workspace: + symlink = workspace / "broken_link.py" + try: + symlink.symlink_to("nonexistent.py") + except OSError as e: + self.skipTest(f"Can't create symlinks: {e}") + result = CliRunner().invoke(black.main, [str(workspace.resolve())]) + self.assertEqual(result.exit_code, 0) + + def test_read_cache_line_lengths(self) -> None: + mode = black.FileMode.AUTO_DETECT + with cache_dir() as workspace: + path = (workspace / "file.py").resolve() + path.touch() + black.write_cache({}, [path], 1, mode) + one = black.read_cache(1, mode) + self.assertIn(path, one) + two = black.read_cache(2, mode) + self.assertNotIn(path, two) + + def test_single_file_force_pyi(self) -> None: + reg_mode = black.FileMode.AUTO_DETECT + pyi_mode = black.FileMode.PYI + contents, expected = read_data("force_pyi") + with cache_dir() as workspace: + path = (workspace / "file.py").resolve() + with open(path, "w") as fh: + fh.write(contents) + result = CliRunner().invoke(black.main, [str(path), "--pyi"]) + self.assertEqual(result.exit_code, 0) + with open(path, "r") as fh: + actual = fh.read() + # verify cache with --pyi is separate + pyi_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, pyi_mode) + self.assertIn(path, pyi_cache) + normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_mode) + self.assertNotIn(path, normal_cache) + self.assertEqual(actual, expected) + + @event_loop(close=False) + def test_multi_file_force_pyi(self) -> None: + reg_mode = black.FileMode.AUTO_DETECT + pyi_mode = black.FileMode.PYI + contents, expected = read_data("force_pyi") + with cache_dir() as workspace: + paths = [ + (workspace / "file1.py").resolve(), + (workspace / "file2.py").resolve(), + ] + for path in paths: + with open(path, "w") as fh: + fh.write(contents) + result = CliRunner().invoke(black.main, [str(p) for p in paths] + ["--pyi"]) + self.assertEqual(result.exit_code, 0) + for path in paths: + with open(path, "r") as fh: + actual = fh.read() + self.assertEqual(actual, expected) + # verify cache with --pyi is separate + pyi_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, pyi_mode) + normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_mode) + for path in paths: + self.assertIn(path, pyi_cache) + self.assertNotIn(path, normal_cache) + + def test_pipe_force_pyi(self) -> None: + source, expected = read_data("force_pyi") + result = CliRunner().invoke(black.main, ["-", "-q", "--pyi"], input=source) + self.assertEqual(result.exit_code, 0) + actual = result.output + self.assertFormatEqual(actual, expected) + + def test_single_file_force_py36(self) -> None: + reg_mode = black.FileMode.AUTO_DETECT + py36_mode = black.FileMode.PYTHON36 + source, expected = read_data("force_py36") + with cache_dir() as workspace: + path = (workspace / "file.py").resolve() + with open(path, "w") as fh: + fh.write(source) + result = CliRunner().invoke(black.main, [str(path), "--py36"]) + self.assertEqual(result.exit_code, 0) + with open(path, "r") as fh: + actual = fh.read() + # verify cache with --py36 is separate + py36_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, py36_mode) + self.assertIn(path, py36_cache) + normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_mode) + self.assertNotIn(path, normal_cache) + self.assertEqual(actual, expected) + + @event_loop(close=False) + def test_multi_file_force_py36(self) -> None: + reg_mode = black.FileMode.AUTO_DETECT + py36_mode = black.FileMode.PYTHON36 + source, expected = read_data("force_py36") + with cache_dir() as workspace: + paths = [ + (workspace / "file1.py").resolve(), + (workspace / "file2.py").resolve(), + ] + for path in paths: + with open(path, "w") as fh: + fh.write(source) + result = CliRunner().invoke( + black.main, [str(p) for p in paths] + ["--py36"] + ) + self.assertEqual(result.exit_code, 0) + for path in paths: + with open(path, "r") as fh: + actual = fh.read() + self.assertEqual(actual, expected) + # verify cache with --py36 is separate + pyi_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, py36_mode) + normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_mode) + for path in paths: + self.assertIn(path, pyi_cache) + self.assertNotIn(path, normal_cache) + + def test_pipe_force_py36(self) -> None: + source, expected = read_data("force_py36") + result = CliRunner().invoke(black.main, ["-", "-q", "--py36"], input=source) + self.assertEqual(result.exit_code, 0) + actual = result.output + self.assertFormatEqual(actual, expected) + + def test_include_exclude(self) -> None: + path = THIS_DIR / "include_exclude_tests" + include = re.compile(r"\.pyi?$") + exclude = re.compile(r"/exclude/|/\.definitely_exclude/") + sources: List[Path] = [] + expected = [ + Path(THIS_DIR / "include_exclude_tests/b/dont_exclude/a.py"), + Path(THIS_DIR / "include_exclude_tests/b/dont_exclude/a.pyi"), + ] + this_abs = THIS_DIR.resolve() + sources.extend(black.gen_python_files_in_dir(path, this_abs, include, exclude)) + self.assertEqual(sorted(expected), sorted(sources)) + + def test_empty_include(self) -> None: + path = THIS_DIR / "include_exclude_tests" + empty = re.compile(r"") + sources: List[Path] = [] + expected = [ + Path(path / "b/exclude/a.pie"), + Path(path / "b/exclude/a.py"), + Path(path / "b/exclude/a.pyi"), + Path(path / "b/dont_exclude/a.pie"), + Path(path / "b/dont_exclude/a.py"), + Path(path / "b/dont_exclude/a.pyi"), + Path(path / "b/.definitely_exclude/a.pie"), + Path(path / "b/.definitely_exclude/a.py"), + Path(path / "b/.definitely_exclude/a.pyi"), + ] + this_abs = THIS_DIR.resolve() + sources.extend( + black.gen_python_files_in_dir( + path, this_abs, empty, re.compile(black.DEFAULT_EXCLUDES) + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + def test_empty_exclude(self) -> None: + path = THIS_DIR / "include_exclude_tests" + empty = re.compile(r"") + sources: List[Path] = [] + expected = [ + Path(path / "b/dont_exclude/a.py"), + Path(path / "b/dont_exclude/a.pyi"), + Path(path / "b/exclude/a.py"), + Path(path / "b/exclude/a.pyi"), + Path(path / "b/.definitely_exclude/a.py"), + Path(path / "b/.definitely_exclude/a.pyi"), + ] + this_abs = THIS_DIR.resolve() + sources.extend( + black.gen_python_files_in_dir( + path, this_abs, re.compile(black.DEFAULT_INCLUDES), empty + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + def test_invalid_include_exclude(self) -> None: + for option in ["--include", "--exclude"]: + result = CliRunner().invoke(black.main, ["-", option, "**()(!!*)"]) + self.assertEqual(result.exit_code, 2) + -if __name__ == '__main__': +if __name__ == "__main__": unittest.main()