X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/32dd9ecb2e9dec8b29c07726d5713ed5b4c36547..159984a7351bfc4789bc0fc85b5f408112efca85:/tests/test_black.py?ds=sidebyside diff --git a/tests/test_black.py b/tests/test_black.py index 2dd284f..dda1055 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -6,11 +6,12 @@ import io 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 @@ -24,6 +25,7 @@ from typing import ( List, Optional, Sequence, + Type, TypeVar, Union, ) @@ -31,7 +33,6 @@ from unittest.mock import MagicMock, patch import click import pytest -import re from click import unstyle from click.testing import CliRunner from pathspec import PathSpec @@ -59,10 +60,13 @@ from tests.util import ( 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) @@ -150,16 +154,49 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -173,15 +210,14 @@ class BlackTestCase(BlackBaseTestCase): 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")) @@ -192,15 +228,14 @@ class BlackTestCase(BlackBaseTestCase): 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")) @@ -215,7 +250,7 @@ class BlackTestCase(BlackBaseTestCase): @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, @@ -229,7 +264,7 @@ class BlackTestCase(BlackBaseTestCase): black.assert_stable(source, actual, black.FileMode()) 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) @@ -237,7 +272,7 @@ class BlackTestCase(BlackBaseTestCase): 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)) @@ -251,9 +286,8 @@ class BlackTestCase(BlackBaseTestCase): 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 " @@ -261,7 +295,7 @@ class BlackTestCase(BlackBaseTestCase): ) 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: @@ -278,13 +312,13 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -298,16 +332,36 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -316,16 +370,44 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -343,8 +425,8 @@ class BlackTestCase(BlackBaseTestCase): @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] @@ -358,8 +440,8 @@ class BlackTestCase(BlackBaseTestCase): @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] @@ -437,8 +519,10 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -447,8 +531,10 @@ class BlackTestCase(BlackBaseTestCase): 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") @@ -457,8 +543,10 @@ class BlackTestCase(BlackBaseTestCase): 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") @@ -467,8 +555,10 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -477,22 +567,28 @@ class BlackTestCase(BlackBaseTestCase): 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: @@ -534,8 +630,10 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -543,8 +641,10 @@ class BlackTestCase(BlackBaseTestCase): 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") @@ -553,8 +653,10 @@ class BlackTestCase(BlackBaseTestCase): 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") @@ -562,8 +664,10 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -571,22 +675,28 @@ class BlackTestCase(BlackBaseTestCase): 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: @@ -630,8 +740,10 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -640,8 +752,10 @@ class BlackTestCase(BlackBaseTestCase): 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") @@ -650,8 +764,10 @@ class BlackTestCase(BlackBaseTestCase): 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") @@ -659,8 +775,10 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -668,22 +786,28 @@ class BlackTestCase(BlackBaseTestCase): 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: @@ -707,7 +831,7 @@ class BlackTestCase(BlackBaseTestCase): # 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) @@ -750,7 +874,7 @@ class BlackTestCase(BlackBaseTestCase): 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, @@ -760,7 +884,7 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -789,6 +913,18 @@ class BlackTestCase(BlackBaseTestCase): 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 [ @@ -840,8 +976,8 @@ class BlackTestCase(BlackBaseTestCase): @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 = [] @@ -864,8 +1000,8 @@ class BlackTestCase(BlackBaseTestCase): ) 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" @@ -883,6 +1019,17 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -911,7 +1058,7 @@ class BlackTestCase(BlackBaseTestCase): 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 [ @@ -925,10 +1072,10 @@ class BlackTestCase(BlackBaseTestCase): 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) @@ -952,7 +1099,7 @@ class BlackTestCase(BlackBaseTestCase): 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: @@ -973,7 +1120,7 @@ class BlackTestCase(BlackBaseTestCase): 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(), @@ -995,7 +1142,7 @@ class BlackTestCase(BlackBaseTestCase): 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")) ) @@ -1006,7 +1153,7 @@ class BlackTestCase(BlackBaseTestCase): 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: @@ -1025,7 +1172,7 @@ class BlackTestCase(BlackBaseTestCase): 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(), @@ -1047,7 +1194,7 @@ class BlackTestCase(BlackBaseTestCase): 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"], @@ -1157,7 +1304,7 @@ class BlackTestCase(BlackBaseTestCase): 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}") @@ -1174,8 +1321,51 @@ class BlackTestCase(BlackBaseTestCase): 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, @@ -1198,6 +1388,20 @@ class BlackTestCase(BlackBaseTestCase): ignore_config=True, ) + 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", 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, @@ -1231,29 +1435,42 @@ class BlackTestCase(BlackBaseTestCase): 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}") @@ -1339,6 +1556,27 @@ class BlackTestCase(BlackBaseTestCase): (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__, @@ -1384,19 +1622,37 @@ class BlackTestCase(BlackBaseTestCase): 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 " @@ -1622,7 +1878,7 @@ class TestCaching: 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: @@ -1667,7 +1923,9 @@ class TestCaching: 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") @@ -1714,7 +1972,7 @@ class TestCaching: 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} @@ -1731,7 +1989,7 @@ class TestCaching: 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: @@ -1823,6 +2081,17 @@ class TestFileCollection: 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 @@ -1856,7 +2125,7 @@ class TestFileCollection: None, None, report, - gitignore, + {path: gitignore}, verbose=False, quiet=False, ) @@ -1885,13 +2154,20 @@ class TestFileCollection: 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" @@ -1916,6 +2192,32 @@ class TestFileCollection: 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] @@ -1960,7 +2262,6 @@ class TestFileCollection: 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( @@ -1971,7 +2272,7 @@ class TestFileCollection: None, None, report, - gitignore, + {path: gitignore}, verbose=False, quiet=False, ) @@ -1980,31 +2281,6 @@ class TestFileCollection: 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: