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Update preview style docs to include recent changes (#3136)
[etc/vim.git] / tests / test_format.py
diff --git a/tests/test_format.py b/tests/test_format.py
index e59d5218d2e84bd457929e9ccff73f32a1eb1f6a..0e1059c61e4aa16aa41532d8c32a9224bac87a8b 100644 (file)
--- a/tests/test_format.py
+++ b/tests/test_format.py
@@ -1,145 +1,158 @@
+from dataclasses import replace
+from typing import Any, Iterator
 from unittest.mock import patch
 
 from unittest.mock import patch
 
-import black
 import pytest
 import pytest
-from parameterized import parameterized
 
 
+import black
 from tests.util import (
 from tests.util import (
-    BlackBaseTestCase,
-    fs,
-    ff,
     DEFAULT_MODE,
     DEFAULT_MODE,
+    PY36_VERSIONS,
+    assert_format,
     dump_to_stderr,
     read_data,
     dump_to_stderr,
     read_data,
-    THIS_DIR,
+    all_data_cases,
 )
 
 )
 
-SIMPLE_CASES = [
-    "beginning_backslash",
-    "bracketmatch",
-    "class_blank_parentheses",
-    "class_methods_new_line",
-    "collections",
-    "comments",
-    "comments2",
-    "comments3",
-    "comments4",
-    "comments5",
-    "comments6",
-    "comments_non_breaking_space",
-    "comment_after_escaped_newline",
-    "composition",
-    "composition_no_trailing_comma",
-    "docstring",
-    "empty_lines",
-    "expression",
-    "fmtonoff",
-    "fmtonoff2",
-    "fmtonoff3",
-    "fmtonoff4",
-    "fmtskip",
-    "fmtskip2",
-    "fmtskip3",
-    "fmtskip4",
-    "fmtskip5",
-    "fstring",
-    "function",
-    "function2",
-    "function_trailing_comma",
-    "import_spacing",
-    "remove_parens",
-    "slices",
-    "string_prefixes",
-    "tricky_unicode_symbols",
-    "tupleassign",
-]
-
-SIMPLE_CASES_PY2 = [
-    "numeric_literals_py2",
-    "python2",
-    "python2_unicode_literals",
-]
-
-EXPERIMENTAL_STRING_PROCESSING_CASES = [
-    "cantfit",
-    "comments7",
-    "long_strings",
-    "long_strings__edge_case",
-    "long_strings__regression",
-    "percent_precedence",
-]
-
-
-SOURCES = [
-    "src/black/__init__.py",
-    "src/black/__main__.py",
-    "src/black/brackets.py",
-    "src/black/cache.py",
-    "src/black/comments.py",
-    "src/black/concurrency.py",
-    "src/black/const.py",
-    "src/black/debug.py",
-    "src/black/files.py",
-    "src/black/linegen.py",
-    "src/black/lines.py",
-    "src/black/mode.py",
-    "src/black/nodes.py",
-    "src/black/numerics.py",
-    "src/black/output.py",
-    "src/black/parsing.py",
-    "src/black/report.py",
-    "src/black/rusty.py",
-    "src/black/strings.py",
-    "src/black/trans.py",
-    "src/blackd/__init__.py",
-    "src/blib2to3/pygram.py",
-    "src/blib2to3/pytree.py",
-    "src/blib2to3/pgen2/conv.py",
-    "src/blib2to3/pgen2/driver.py",
-    "src/blib2to3/pgen2/grammar.py",
-    "src/blib2to3/pgen2/literals.py",
-    "src/blib2to3/pgen2/parse.py",
-    "src/blib2to3/pgen2/pgen.py",
-    "src/blib2to3/pgen2/tokenize.py",
-    "src/blib2to3/pgen2/token.py",
-    "setup.py",
-    "tests/test_black.py",
-    "tests/test_blackd.py",
-    "tests/test_format.py",
-    "tests/test_primer.py",
-    "tests/optional.py",
-    "tests/util.py",
-    "tests/conftest.py",
-]
-
-
-class TestSimpleFormat(BlackBaseTestCase):
-    @parameterized.expand(SIMPLE_CASES_PY2)
-    @pytest.mark.python2
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_simple_format_py2(self, filename: str) -> None:
-        self.check_file(filename, DEFAULT_MODE)
-
-    @parameterized.expand(SIMPLE_CASES)
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_simple_format(self, filename: str) -> None:
-        self.check_file(filename, DEFAULT_MODE)
-
-    @parameterized.expand(EXPERIMENTAL_STRING_PROCESSING_CASES)
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_experimental_format(self, filename: str) -> None:
-        self.check_file(filename, black.Mode(experimental_string_processing=True))
-
-    @parameterized.expand(SOURCES)
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_source_is_formatted(self, filename: str) -> None:
-        path = THIS_DIR.parent / filename
-        self.check_file(str(path), DEFAULT_MODE, data=False)
-        self.assertFalse(ff(path))
-
-    def check_file(self, filename: str, mode: black.Mode, *, data: bool = True) -> None:
-        source, expected = read_data(filename, data=data)
-        actual = fs(source, mode=mode)
-        self.assertFormatEqual(expected, actual)
-        black.assert_equivalent(source, actual)
-        black.assert_stable(source, actual, mode)
+
+@pytest.fixture(autouse=True)
+def patch_dump_to_file(request: Any) -> Iterator[None]:
+    with patch("black.dump_to_file", dump_to_stderr):
+        yield
+
+
+def check_file(
+    subdir: str, filename: str, mode: black.Mode, *, data: bool = True
+) -> None:
+    source, expected = read_data(subdir, filename, data=data)
+    assert_format(source, expected, mode, fast=False)
+
+
+@pytest.mark.parametrize("filename", all_data_cases("simple_cases"))
+def test_simple_format(filename: str) -> None:
+    check_file("simple_cases", filename, DEFAULT_MODE)
+
+
+@pytest.mark.parametrize("filename", all_data_cases("preview"))
+def test_preview_format(filename: str) -> None:
+    check_file("preview", filename, black.Mode(preview=True))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("preview_39"))
+def test_preview_minimum_python_39_format(filename: str) -> None:
+    source, expected = read_data("preview_39", filename)
+    mode = black.Mode(preview=True)
+    assert_format(source, expected, mode, minimum_version=(3, 9))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("preview_310"))
+def test_preview_minimum_python_310_format(filename: str) -> None:
+    source, expected = read_data("preview_310", filename)
+    mode = black.Mode(preview=True)
+    assert_format(source, expected, mode, minimum_version=(3, 10))
+
+
+# =============== #
+# Complex cases
+# ============= #
+
+
+def test_empty() -> None:
+    source = expected = ""
+    assert_format(source, expected)
+
+
+@pytest.mark.parametrize("filename", all_data_cases("py_36"))
+def test_python_36(filename: str) -> None:
+    source, expected = read_data("py_36", filename)
+    mode = black.Mode(target_versions=PY36_VERSIONS)
+    assert_format(source, expected, mode, minimum_version=(3, 6))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("py_37"))
+def test_python_37(filename: str) -> None:
+    source, expected = read_data("py_37", filename)
+    mode = black.Mode(target_versions={black.TargetVersion.PY37})
+    assert_format(source, expected, mode, minimum_version=(3, 7))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("py_38"))
+def test_python_38(filename: str) -> None:
+    source, expected = read_data("py_38", filename)
+    mode = black.Mode(target_versions={black.TargetVersion.PY38})
+    assert_format(source, expected, mode, minimum_version=(3, 8))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("py_39"))
+def test_python_39(filename: str) -> None:
+    source, expected = read_data("py_39", filename)
+    mode = black.Mode(target_versions={black.TargetVersion.PY39})
+    assert_format(source, expected, mode, minimum_version=(3, 9))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("py_310"))
+def test_python_310(filename: str) -> None:
+    source, expected = read_data("py_310", filename)
+    mode = black.Mode(target_versions={black.TargetVersion.PY310})
+    assert_format(source, expected, mode, minimum_version=(3, 10))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("py_310"))
+def test_python_310_without_target_version(filename: str) -> None:
+    source, expected = read_data("py_310", filename)
+    mode = black.Mode()
+    assert_format(source, expected, mode, minimum_version=(3, 10))
+
+
+def test_patma_invalid() -> None:
+    source, expected = read_data("miscellaneous", "pattern_matching_invalid")
+    mode = black.Mode(target_versions={black.TargetVersion.PY310})
+    with pytest.raises(black.parsing.InvalidInput) as exc_info:
+        assert_format(source, expected, mode, minimum_version=(3, 10))
+
+    exc_info.match("Cannot parse: 10:11")
+
+
+@pytest.mark.parametrize("filename", all_data_cases("py_311"))
+def test_python_311(filename: str) -> None:
+    source, expected = read_data("py_311", filename)
+    mode = black.Mode(target_versions={black.TargetVersion.PY311})
+    assert_format(source, expected, mode, minimum_version=(3, 11))
+
+
+@pytest.mark.parametrize("filename", all_data_cases("fast"))
+def test_fast_cases(filename: str) -> None:
+    source, expected = read_data("fast", filename)
+    assert_format(source, expected, fast=True)
+
+
+def test_python_2_hint() -> None:
+    with pytest.raises(black.parsing.InvalidInput) as exc_info:
+        assert_format("print 'daylily'", "print 'daylily'")
+    exc_info.match(black.parsing.PY2_HINT)
+
+
+def test_docstring_no_string_normalization() -> None:
+    """Like test_docstring but with string normalization off."""
+    source, expected = read_data("miscellaneous", "docstring_no_string_normalization")
+    mode = replace(DEFAULT_MODE, string_normalization=False)
+    assert_format(source, expected, mode)
+
+
+def test_long_strings_flag_disabled() -> None:
+    """Tests for turning off the string processing logic."""
+    source, expected = read_data("miscellaneous", "long_strings_flag_disabled")
+    mode = replace(DEFAULT_MODE, experimental_string_processing=False)
+    assert_format(source, expected, mode)
+
+
+def test_stub() -> None:
+    mode = replace(DEFAULT_MODE, is_pyi=True)
+    source, expected = read_data("miscellaneous", "stub.pyi")
+    assert_format(source, expected, mode)
+
+
+def test_power_op_newline() -> None:
+    # requires line_length=0
+    source, expected = read_data("miscellaneous", "power_op_newline")
+    assert_format(source, expected, mode=black.Mode(line_length=0))
vim configuration

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