tests/test_format.py

   1 from unittest.mock import patch
   2
   3 import black
   4 from parameterized import parameterized
   5
   6 from tests.util import (
   7     BlackBaseTestCase,
   8     fs,
   9     ff,
  10     DEFAULT_MODE,
  11     dump_to_stderr,
  12     read_data,
  13     THIS_DIR,
  14 )
  15
  16 SIMPLE_CASES = [
  17     "beginning_backslash",
  18     "bracketmatch",
  19     "class_blank_parentheses",
  20     "class_methods_new_line",
  21     "collections",
  22     "comments",
  23     "comments2",
  24     "comments3",
  25     "comments4",
  26     "comments5",
  27     "comments6",
  28     "comments_non_breaking_space",
  29     "comment_after_escaped_newline",
  30     "composition",
  31     "composition_no_trailing_comma",
  32     "docstring",
  33     "empty_lines",
  34     "expression",
  35     "fmtonoff",
  36     "fmtonoff2",
  37     "fmtonoff3",
  38     "fmtonoff4",
  39     "fmtskip",
  40     "fmtskip2",
  41     "fmtskip3",
  42     "fmtskip4",
  43     "fmtskip5",
  44     "fstring",
  45     "function",
  46     "function2",
  47     "function_trailing_comma",
  48     "import_spacing",
  49     "numeric_literals_py2",
  50     "python2",
  51     "python2_unicode_literals",
  52     "remove_parens",
  53     "slices",
  54     "string_prefixes",
  55     "tricky_unicode_symbols",
  56     "tupleassign",
  57 ]
  58
  59 EXPERIMENTAL_STRING_PROCESSING_CASES = [
  60     "cantfit",
  61     "comments7",
  62     "long_strings",
  63     "long_strings__edge_case",
  64     "long_strings__regression",
  65     "percent_precedence",
  66 ]
  67
  68
  69 SOURCES = [
  70     "tests/test_black.py",
  71     "tests/test_format.py",
  72     "tests/test_blackd.py",
  73     "src/black/__init__.py",
  74     "src/blib2to3/pygram.py",
  75     "src/blib2to3/pytree.py",
  76     "src/blib2to3/pgen2/conv.py",
  77     "src/blib2to3/pgen2/driver.py",
  78     "src/blib2to3/pgen2/grammar.py",
  79     "src/blib2to3/pgen2/literals.py",
  80     "src/blib2to3/pgen2/parse.py",
  81     "src/blib2to3/pgen2/pgen.py",
  82     "src/blib2to3/pgen2/tokenize.py",
  83     "src/blib2to3/pgen2/token.py",
  84     "setup.py",
  85 ]
  86
  87
  88 class TestSimpleFormat(BlackBaseTestCase):
  89     @parameterized.expand(SIMPLE_CASES)
  90     @patch("black.dump_to_file", dump_to_stderr)
  91     def test_simple_format(self, filename: str) -> None:
  92         self.check_file(filename, DEFAULT_MODE)
  93
  94     @parameterized.expand(EXPERIMENTAL_STRING_PROCESSING_CASES)
  95     @patch("black.dump_to_file", dump_to_stderr)
  96     def test_experimental_format(self, filename: str) -> None:
  97         self.check_file(filename, black.Mode(experimental_string_processing=True))
  98
  99     @parameterized.expand(SOURCES)
 100     @patch("black.dump_to_file", dump_to_stderr)
 101     def test_source_is_formatted(self, filename: str) -> None:
 102         path = THIS_DIR.parent / filename
 103         self.check_file(str(path), DEFAULT_MODE, data=False)
 104         self.assertFalse(ff(path))
 105
 106     def check_file(self, filename: str, mode: black.Mode, *, data: bool = True) -> None:
 107         source, expected = read_data(filename, data=data)
 108         actual = fs(source, mode=mode)
 109         self.assertFormatEqual(expected, actual)
 110         black.assert_equivalent(source, actual)
 111         black.assert_stable(source, actual, mode)