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Enable ` --experimental-string-processing` on most primer projects (#2184)
[etc/vim.git] / tests / test_format.py
1 from unittest.mock import patch
2
3 import black
4 import pytest
5 from parameterized import parameterized
6
7 from tests.util import (
8     BlackBaseTestCase,
9     fs,
10     ff,
11     DEFAULT_MODE,
12     dump_to_stderr,
13     read_data,
14     THIS_DIR,
15 )
16
17 SIMPLE_CASES = [
18     "beginning_backslash",
19     "bracketmatch",
20     "class_blank_parentheses",
21     "class_methods_new_line",
22     "collections",
23     "comments",
24     "comments2",
25     "comments3",
26     "comments4",
27     "comments5",
28     "comments6",
29     "comments_non_breaking_space",
30     "comment_after_escaped_newline",
31     "composition",
32     "composition_no_trailing_comma",
33     "docstring",
34     "empty_lines",
35     "expression",
36     "fmtonoff",
37     "fmtonoff2",
38     "fmtonoff3",
39     "fmtonoff4",
40     "fmtskip",
41     "fmtskip2",
42     "fmtskip3",
43     "fmtskip4",
44     "fmtskip5",
45     "fstring",
46     "function",
47     "function2",
48     "function_trailing_comma",
49     "import_spacing",
50     "remove_parens",
51     "slices",
52     "string_prefixes",
53     "tricky_unicode_symbols",
54     "tupleassign",
55 ]
56
57 SIMPLE_CASES_PY2 = [
58     "numeric_literals_py2",
59     "python2",
60     "python2_unicode_literals",
61 ]
62
63 EXPERIMENTAL_STRING_PROCESSING_CASES = [
64     "cantfit",
65     "comments7",
66     "long_strings",
67     "long_strings__edge_case",
68     "long_strings__regression",
69     "percent_precedence",
70 ]
71
72
73 SOURCES = [
74     "tests/test_black.py",
75     "tests/test_format.py",
76     "tests/test_blackd.py",
77     "src/black/__init__.py",
78     "src/blib2to3/pygram.py",
79     "src/blib2to3/pytree.py",
80     "src/blib2to3/pgen2/conv.py",
81     "src/blib2to3/pgen2/driver.py",
82     "src/blib2to3/pgen2/grammar.py",
83     "src/blib2to3/pgen2/literals.py",
84     "src/blib2to3/pgen2/parse.py",
85     "src/blib2to3/pgen2/pgen.py",
86     "src/blib2to3/pgen2/tokenize.py",
87     "src/blib2to3/pgen2/token.py",
88     "setup.py",
89 ]
90
91
92 class TestSimpleFormat(BlackBaseTestCase):
93     @parameterized.expand(SIMPLE_CASES_PY2)
94     @pytest.mark.python2
95     @patch("black.dump_to_file", dump_to_stderr)
96     def test_simple_format_py2(self, filename: str) -> None:
97         self.check_file(filename, DEFAULT_MODE)
98
99     @parameterized.expand(SIMPLE_CASES)
100     @patch("black.dump_to_file", dump_to_stderr)
101     def test_simple_format(self, filename: str) -> None:
102         self.check_file(filename, DEFAULT_MODE)
103
104     @parameterized.expand(EXPERIMENTAL_STRING_PROCESSING_CASES)
105     @patch("black.dump_to_file", dump_to_stderr)
106     def test_experimental_format(self, filename: str) -> None:
107         self.check_file(filename, black.Mode(experimental_string_processing=True))
108
109     @parameterized.expand(SOURCES)
110     @patch("black.dump_to_file", dump_to_stderr)
111     def test_source_is_formatted(self, filename: str) -> None:
112         path = THIS_DIR.parent / filename
113         self.check_file(str(path), DEFAULT_MODE, data=False)
114         self.assertFalse(ff(path))
115
116     def check_file(self, filename: str, mode: black.Mode, *, data: bool = True) -> None:
117         source, expected = read_data(filename, data=data)
118         actual = fs(source, mode=mode)
119         self.assertFormatEqual(expected, actual)
120         black.assert_equivalent(source, actual)
121         black.assert_stable(source, actual, mode)