+ 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.",
+ )
+
+ def test_report_quiet(self) -> None:
+ report = black.Report(quiet=True)
+ 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):
+ report.done(Path("f1"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(unstyle(str(report)), "1 file left unchanged.")
+ self.assertEqual(report.return_code, 0)
+ report.done(Path("f2"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(
+ unstyle(str(report)), "1 file reformatted, 1 file left unchanged."
+ )
+ report.done(Path("f3"), black.Changed.CACHED)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(
+ 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), 0)
+ self.assertEqual(len(err_lines), 1)
+ 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.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f3"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 1)
+ self.assertEqual(
+ unstyle(str(report)),
+ "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), 0)
+ self.assertEqual(len(err_lines), 2)
+ 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.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.path_ignored(Path("wat"), "no match")
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f4"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "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.",
+ )
+
+ def test_report_normal(self) -> None:
+ report = black.Report()
+ 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):
+ report.done(Path("f1"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(unstyle(str(report)), "1 file left unchanged.")
+ self.assertEqual(report.return_code, 0)
+ report.done(Path("f2"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 1)
+ self.assertEqual(len(err_lines), 0)
+ 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), 1)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(out_lines[-1], "reformatted f2")
+ self.assertEqual(
+ 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), 1)
+ self.assertEqual(len(err_lines), 1)
+ 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.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f3"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 2)
+ self.assertEqual(len(err_lines), 1)
+ self.assertEqual(out_lines[-1], "reformatted f3")
+ self.assertEqual(
+ unstyle(str(report)),
+ "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), 2)
+ self.assertEqual(len(err_lines), 2)
+ 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.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.path_ignored(Path("wat"), "no match")
+ self.assertEqual(len(out_lines), 2)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f4"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 2)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "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.",
+ )
+
+ def test_lib2to3_parse(self) -> None:
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse("invalid syntax")
+
+ straddling = "x + y"
+ black.lib2to3_parse(straddling)
+ black.lib2to3_parse(straddling, {TargetVersion.PY27})
+ black.lib2to3_parse(straddling, {TargetVersion.PY36})
+ black.lib2to3_parse(straddling, {TargetVersion.PY27, TargetVersion.PY36})
+
+ py2_only = "print x"
+ black.lib2to3_parse(py2_only)
+ black.lib2to3_parse(py2_only, {TargetVersion.PY27})
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse(py2_only, {TargetVersion.PY36})
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse(py2_only, {TargetVersion.PY27, TargetVersion.PY36})
+
+ py3_only = "exec(x, end=y)"
+ black.lib2to3_parse(py3_only)
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse(py3_only, {TargetVersion.PY27})
+ black.lib2to3_parse(py3_only, {TargetVersion.PY36})
+ black.lib2to3_parse(py3_only, {TargetVersion.PY27, TargetVersion.PY36})
+
+ def test_get_features_used(self) -> None:
+ node = black.lib2to3_parse("def f(*, arg): ...\n")
+ self.assertEqual(black.get_features_used(node), set())
+ node = black.lib2to3_parse("def f(*, arg,): ...\n")
+ self.assertEqual(black.get_features_used(node), {Feature.TRAILING_COMMA_IN_DEF})
+ node = black.lib2to3_parse("f(*arg,)\n")
+ self.assertEqual(
+ black.get_features_used(node), {Feature.TRAILING_COMMA_IN_CALL}
+ )
+ node = black.lib2to3_parse("def f(*, arg): f'string'\n")
+ self.assertEqual(black.get_features_used(node), {Feature.F_STRINGS})
+ node = black.lib2to3_parse("123_456\n")
+ 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")
+ node = black.lib2to3_parse(source)
+ expected_features = {
+ Feature.TRAILING_COMMA_IN_CALL,
+ Feature.TRAILING_COMMA_IN_DEF,
+ Feature.F_STRINGS,
+ }
+ 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")
+ node = black.lib2to3_parse(source)
+ self.assertEqual(black.get_features_used(node), set())
+ node = black.lib2to3_parse(expected)
+ self.assertEqual(black.get_features_used(node), set())
+
+ 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))
+ node = black.lib2to3_parse(
+ "from __future__ import unicode_literals as _unicode_literals"
+ )
+ self.assertEqual({"unicode_literals"}, black.get_future_imports(node))
+ node = black.lib2to3_parse(
+ "from __future__ import unicode_literals as _lol, print"
+ )
+ self.assertEqual({"unicode_literals", "print"}, 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 = ""
+ mode = black.FileMode()
+ with self.assertRaises(black.NothingChanged):
+ black.format_file_contents(empty, mode=mode, fast=False)
+ just_nl = "\n"
+ with self.assertRaises(black.NothingChanged):
+ black.format_file_contents(just_nl, mode=mode, fast=False)
+ same = "l = [1, 2, 3]\n"
+ with self.assertRaises(black.NothingChanged):
+ black.format_file_contents(same, mode=mode, fast=False)
+ different = "l = [1,2,3]"
+ expected = same
+ actual = black.format_file_contents(different, mode=mode, fast=False)
+ self.assertEqual(expected, actual)
+ invalid = "return if you can"
+ with self.assertRaises(black.InvalidInput) as e:
+ black.format_file_contents(invalid, mode=mode, 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()
+ with cache_dir() as workspace:
+ cache_file = black.get_cache_file(mode)
+ with cache_file.open("w") as fobj:
+ fobj.write("this is not a pickle")
+ self.assertEqual(black.read_cache(mode), {})
+ src = (workspace / "test.py").resolve()
+ with src.open("w") as fobj:
+ fobj.write("print('hello')")
+ self.invokeBlack([str(src)])
+ cache = black.read_cache(mode)
+ self.assertIn(src, cache)
+
+ def test_cache_single_file_already_cached(self) -> None:
+ mode = black.FileMode()
+ with cache_dir() as workspace:
+ src = (workspace / "test.py").resolve()
+ with src.open("w") as fobj:
+ fobj.write("print('hello')")
+ black.write_cache({}, [src], mode)
+ self.invokeBlack([str(src)])
+ 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()
+ 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], mode)
+ self.invokeBlack([str(workspace)])
+ 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(mode)
+ self.assertIn(one, cache)
+ self.assertIn(two, cache)
+
+ def test_no_cache_when_writeback_diff(self) -> None:
+ mode = black.FileMode()
+ with cache_dir() as workspace:
+ src = (workspace / "test.py").resolve()
+ with src.open("w") as fobj:
+ fobj.write("print('hello')")
+ self.invokeBlack([str(src), "--diff"])
+ cache_file = black.get_cache_file(mode)
+ self.assertFalse(cache_file.exists())
+
+ def test_no_cache_when_stdin(self) -> None:
+ mode = black.FileMode()
+ with cache_dir():
+ result = CliRunner().invoke(
+ black.main, ["-"], input=BytesIO(b"print('hello')")
+ )
+ self.assertEqual(result.exit_code, 0)
+ cache_file = black.get_cache_file(mode)
+ self.assertFalse(cache_file.exists())
+
+ def test_read_cache_no_cachefile(self) -> None:
+ mode = black.FileMode()
+ with cache_dir():
+ self.assertEqual(black.read_cache(mode), {})
+
+ def test_write_cache_read_cache(self) -> None:
+ mode = black.FileMode()
+ with cache_dir() as workspace:
+ src = (workspace / "test.py").resolve()
+ src.touch()
+ black.write_cache({}, [src], mode)
+ cache = black.read_cache(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()
+ with cache_dir(exists=False) as workspace:
+ self.assertFalse(workspace.exists())
+ black.write_cache({}, [], mode)
+ self.assertTrue(workspace.exists())
+
+ @event_loop(close=False)
+ def test_failed_formatting_does_not_get_cached(self) -> None:
+ mode = black.FileMode()
+ 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')
+ self.invokeBlack([str(workspace)], exit_code=123)
+ cache = black.read_cache(mode)
+ self.assertNotIn(failing, cache)
+ self.assertIn(clean, cache)
+
+ def test_write_cache_write_fail(self) -> None:
+ mode = black.FileMode()
+ with cache_dir(), patch.object(Path, "open") as mock:
+ mock.side_effect = OSError
+ black.write_cache({}, [], mode)
+
+ @event_loop(close=False)
+ def test_check_diff_use_together(self) -> None:
+ with cache_dir():
+ # Files which will be reformatted.
+ src1 = (THIS_DIR / "data" / "string_quotes.py").resolve()
+ self.invokeBlack([str(src1), "--diff", "--check"], exit_code=1)
+ # Files which will not be reformatted.
+ src2 = (THIS_DIR / "data" / "composition.py").resolve()
+ self.invokeBlack([str(src2), "--diff", "--check"])
+ # Multi file command.
+ self.invokeBlack([str(src1), str(src2), "--diff", "--check"], exit_code=1)
+
+ def test_no_files(self) -> None:
+ with cache_dir():
+ # Without an argument, black exits with error code 0.
+ self.invokeBlack([])
+
+ 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}")
+ self.invokeBlack([str(workspace.resolve())])
+
+ def test_read_cache_line_lengths(self) -> None:
+ mode = black.FileMode()
+ short_mode = black.FileMode(line_length=1)
+ with cache_dir() as workspace:
+ path = (workspace / "file.py").resolve()
+ path.touch()
+ black.write_cache({}, [path], mode)
+ one = black.read_cache(mode)
+ self.assertIn(path, one)
+ two = black.read_cache(short_mode)
+ self.assertNotIn(path, two)
+
+ def test_single_file_force_pyi(self) -> None:
+ reg_mode = black.FileMode()
+ pyi_mode = black.FileMode(is_pyi=True)
+ 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)
+ self.invokeBlack([str(path), "--pyi"])
+ with open(path, "r") as fh:
+ actual = fh.read()
+ # verify cache with --pyi is separate
+ pyi_cache = black.read_cache(pyi_mode)
+ self.assertIn(path, pyi_cache)
+ normal_cache = black.read_cache(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()
+ pyi_mode = black.FileMode(is_pyi=True)
+ 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)
+ self.invokeBlack([str(p) for p in paths] + ["--pyi"])
+ 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(pyi_mode)
+ normal_cache = black.read_cache(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=BytesIO(source.encode("utf8"))
+ )
+ 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()
+ py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS)
+ 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)
+ self.invokeBlack([str(path), *PY36_ARGS])
+ with open(path, "r") as fh:
+ actual = fh.read()
+ # verify cache with --target-version is separate
+ py36_cache = black.read_cache(py36_mode)
+ self.assertIn(path, py36_cache)
+ normal_cache = black.read_cache(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()
+ py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS)
+ 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)
+ self.invokeBlack([str(p) for p in paths] + PY36_ARGS)
+ for path in paths:
+ with open(path, "r") as fh:
+ actual = fh.read()
+ self.assertEqual(actual, expected)
+ # verify cache with --target-version is separate
+ pyi_cache = black.read_cache(py36_mode)
+ normal_cache = black.read_cache(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", "--target-version=py36"],
+ input=BytesIO(source.encode("utf8")),
+ )
+ self.assertEqual(result.exit_code, 0)
+ actual = result.output
+ self.assertFormatEqual(actual, expected)
+
+ def test_include_exclude(self) -> None:
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ include = re.compile(r"\.pyi?$")
+ exclude = re.compile(r"/exclude/|/\.definitely_exclude/")
+ report = black.Report()
+ sources: List[Path] = []
+ expected = [
+ Path(path / "b/dont_exclude/a.py"),
+ Path(path / "b/dont_exclude/a.pyi"),
+ ]
+ this_abs = THIS_DIR.resolve()
+ sources.extend(
+ black.gen_python_files_in_dir(path, this_abs, include, exclude, report)
+ )
+ self.assertEqual(sorted(expected), sorted(sources))
+
+ def test_empty_include(self) -> None:
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ report = black.Report()
+ 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), report
+ )
+ )
+ self.assertEqual(sorted(expected), sorted(sources))
+
+ def test_empty_exclude(self) -> None:
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ report = black.Report()
+ 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, report
+ )
+ )
+ self.assertEqual(sorted(expected), sorted(sources))
+
+ def test_invalid_include_exclude(self) -> None:
+ for option in ["--include", "--exclude"]:
+ self.invokeBlack(["-", option, "**()(!!*)"], exit_code=2)
+
+ def test_preserves_line_endings(self) -> None:
+ with TemporaryDirectory() as workspace:
+ test_file = Path(workspace) / "test.py"
+ for nl in ["\n", "\r\n"]:
+ contents = nl.join(["def f( ):", " pass"])
+ test_file.write_bytes(contents.encode())
+ ff(test_file, write_back=black.WriteBack.YES)
+ updated_contents: bytes = test_file.read_bytes()
+ self.assertIn(nl.encode(), updated_contents)
+ if nl == "\n":
+ self.assertNotIn(b"\r\n", updated_contents)
+
+ def test_preserves_line_endings_via_stdin(self) -> None:
+ for nl in ["\n", "\r\n"]:
+ contents = nl.join(["def f( ):", " pass"])
+ runner = BlackRunner()
+ result = runner.invoke(
+ black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8"))
+ )
+ self.assertEqual(result.exit_code, 0)
+ output = runner.stdout_bytes
+ self.assertIn(nl.encode("utf8"), output)
+ if nl == "\n":
+ self.assertNotIn(b"\r\n", output)
+
+ def test_assert_equivalent_different_asts(self) -> None:
+ with self.assertRaises(AssertionError):
+ black.assert_equivalent("{}", "None")
+
+ def test_symlink_out_of_root_directory(self) -> None:
+ path = MagicMock()
+ root = THIS_DIR
+ child = MagicMock()
+ include = re.compile(black.DEFAULT_INCLUDES)
+ exclude = re.compile(black.DEFAULT_EXCLUDES)
+ report = black.Report()
+ # `child` should behave like a symlink which resolved path is clearly
+ # outside of the `root` directory.
+ path.iterdir.return_value = [child]
+ child.resolve.return_value = Path("/a/b/c")
+ child.is_symlink.return_value = True
+ try:
+ list(black.gen_python_files_in_dir(path, root, include, exclude, report))
+ except ValueError as ve:
+ self.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 self.assertRaises(ValueError):
+ list(black.gen_python_files_in_dir(path, root, include, exclude, report))
+ path.iterdir.assert_called()
+ self.assertEqual(path.iterdir.call_count, 2)
+ child.resolve.assert_called()
+ self.assertEqual(child.resolve.call_count, 2)
+ child.is_symlink.assert_called()
+ self.assertEqual(child.is_symlink.call_count, 2)
+
+ def test_shhh_click(self) -> None:
+ try:
+ from click import _unicodefun # type: ignore
+ except ModuleNotFoundError:
+ self.skipTest("Incompatible Click version")
+ if not hasattr(_unicodefun, "_verify_python3_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()
+ # 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()
+ except RuntimeError as re:
+ self.fail(f"`patch_click()` failed, exception still raised: {re}")
+
+ def test_root_logger_not_used_directly(self) -> None:
+ def fail(*args: Any, **kwargs: Any) -> None:
+ self.fail("Record created with root logger")
+
+ with patch.multiple(
+ logging.root,
+ debug=fail,
+ info=fail,
+ warning=fail,
+ error=fail,
+ critical=fail,
+ log=fail,
+ ):
+ ff(THIS_FILE)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_request_needs_formatting(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post("/", data=b"print('hello world')")
+ self.assertEqual(response.status, 200)
+ self.assertEqual(response.charset, "utf8")
+ self.assertEqual(await response.read(), b'print("hello world")\n')
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_request_no_change(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post("/", data=b'print("hello world")\n')
+ self.assertEqual(response.status, 204)
+ self.assertEqual(await response.read(), b"")
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_request_syntax_error(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post("/", data=b"what even ( is")
+ self.assertEqual(response.status, 400)
+ content = await response.text()
+ self.assertTrue(
+ content.startswith("Cannot parse"),
+ msg=f"Expected error to start with 'Cannot parse', got {repr(content)}",
+ )
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_unsupported_version(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/", data=b"what", headers={blackd.VERSION_HEADER: "2"}
+ )
+ self.assertEqual(response.status, 501)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_supported_version(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/", data=b"what", headers={blackd.VERSION_HEADER: "1"}
+ )
+ self.assertEqual(response.status, 200)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_invalid_python_variant(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+
+ async def check(header_value: str, expected_status: int = 400) -> None:
+ response = await client.post(
+ "/",
+ data=b"what",
+ headers={blackd.PYTHON_VARIANT_HEADER: header_value},
+ )
+ self.assertEqual(response.status, expected_status)
+
+ await check("lol")
+ await check("ruby3.5")
+ await check("pyi3.6")
+ await check("py1.5")
+ await check("2.8")
+ await check("py2.8")
+ await check("3.0")
+ await check("pypy3.0")
+ await check("jython3.4")
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_pyi(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ source, expected = read_data("stub.pyi")
+ response = await client.post(
+ "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"}
+ )
+ self.assertEqual(response.status, 200)
+ self.assertEqual(await response.text(), expected)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_python_variant(self) -> None:
+ app = blackd.make_app()
+ code = (
+ "def f(\n"
+ " and_has_a_bunch_of,\n"
+ " very_long_arguments_too,\n"
+ " and_lots_of_them_as_well_lol,\n"
+ " **and_very_long_keyword_arguments\n"
+ "):\n"
+ " pass\n"
+ )
+ async with TestClient(TestServer(app)) as client:
+
+ async def check(header_value: str, expected_status: int) -> None:
+ response = await client.post(
+ "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value}
+ )
+ self.assertEqual(response.status, expected_status)
+
+ await check("3.6", 200)
+ await check("py3.6", 200)
+ await check("3.6,3.7", 200)
+ await check("3.6,py3.7", 200)
+
+ await check("2", 204)
+ await check("2.7", 204)
+ await check("py2.7", 204)
+ await check("3.4", 204)
+ await check("py3.4", 204)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_line_length(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"}
+ )
+ self.assertEqual(response.status, 200)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_invalid_line_length(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/",
+ data=b'print("hello")\n',
+ headers={blackd.LINE_LENGTH_HEADER: "NaN"},
+ )
+ self.assertEqual(response.status, 400)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ def test_blackd_main(self) -> None:
+ with patch("blackd.web.run_app"):
+ result = CliRunner().invoke(blackd.main, [])
+ if result.exception is not None:
+ raise result.exception
+ self.assertEqual(result.exit_code, 0)
projects / etc / vim.git / blobdiff