#!/usr/bin/env python3
from functools import partial
+from io import StringIO
+import os
from pathlib import Path
-from typing import List, Tuple
+import sys
+from typing import Any, List, Tuple
import unittest
from unittest.mock import patch
import black
ll = 88
-ff = partial(black.format_file, line_length=ll, fast=True)
+ff = partial(black.format_file_in_place, line_length=ll, fast=True)
fs = partial(black.format_str, line_length=ll)
THIS_FILE = Path(__file__)
THIS_DIR = THIS_FILE.parent
+EMPTY_LINE = '# EMPTY LINE WITH WHITESPACE' + ' (this comment will be removed)'
def dump_to_stderr(*output: str) -> str:
def read_data(name: str) -> Tuple[str, str]:
"""read_data('test_name') -> 'input', 'output'"""
- if not name.endswith('.py'):
+ if not name.endswith(('.py', '.out')):
name += '.py'
_input: List[str] = []
_output: List[str] = []
lines = test.readlines()
result = _input
for line in lines:
+ line = line.replace(EMPTY_LINE, '')
if line.rstrip() == '# output':
result = _output
continue
maxDiff = None
def assertFormatEqual(self, expected: str, actual: str) -> None:
- if actual != expected:
+ if actual != expected and not os.environ.get('SKIP_AST_PRINT'):
+ bdv: black.DebugVisitor[Any]
black.out('Expected tree:', fg='green')
try:
exp_node = black.lib2to3_parse(expected)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
- with self.assertRaises(black.NothingChanged):
- ff(THIS_FILE)
+ self.assertFalse(ff(THIS_FILE))
@patch("black.dump_to_file", dump_to_stderr)
def test_black(self) -> None:
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
- with self.assertRaises(black.NothingChanged):
- ff(THIS_FILE)
+ self.assertFalse(ff(THIS_DIR / '..' / 'black.py'))
+
+ def test_piping(self) -> None:
+ source, expected = read_data('../black')
+ hold_stdin, hold_stdout = sys.stdin, sys.stdout
+ try:
+ sys.stdin, sys.stdout = StringIO(source), StringIO()
+ sys.stdin.name = '<stdin>'
+ black.format_stdin_to_stdout(line_length=ll, fast=True, write_back=True)
+ sys.stdout.seek(0)
+ actual = sys.stdout.read()
+ finally:
+ sys.stdin, sys.stdout = hold_stdin, hold_stdout
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, line_length=ll)
@patch("black.dump_to_file", dump_to_stderr)
def test_setup(self) -> None:
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
- with self.assertRaises(black.NothingChanged):
- ff(THIS_FILE)
+ self.assertFalse(ff(THIS_DIR / '..' / 'setup.py'))
@patch("black.dump_to_file", dump_to_stderr)
def test_function(self) -> None:
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_fstring(self) -> None:
+ source, expected = read_data('fstring')
+ actual = fs(source)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, line_length=ll)
+
@patch("black.dump_to_file", dump_to_stderr)
def test_comments(self) -> None:
source, expected = read_data('comments')
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_empty_lines(self) -> None:
+ source, expected = read_data('empty_lines')
+ actual = fs(source)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, line_length=ll)
+
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_python2(self) -> None:
+ source, expected = read_data('python2')
+ actual = fs(source)
+ self.assertFormatEqual(expected, actual)
+ # black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, line_length=ll)
+
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_fmtonoff(self) -> None:
+ source, expected = read_data('fmtonoff')
+ actual = fs(source)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, line_length=ll)
+
def test_report(self) -> None:
report = black.Report()
out_lines = []
err_lines = []
- def out(msg: str, **kwargs):
+ def out(msg: str, **kwargs: Any) -> None:
out_lines.append(msg)
- def err(msg: str, **kwargs):
+ def err(msg: str, **kwargs: Any) -> None:
err_lines.append(msg)
with patch("black.out", out), patch("black.err", err):
self.assertEqual(
unstyle(str(report)), '1 file reformatted, 1 file 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), 2)
self.assertEqual(len(err_lines), 1)
'2 files failed to reformat.',
)
self.assertEqual(report.return_code, 123)
+ report.check = True
+ self.assertEqual(
+ unstyle(str(report)),
+ '2 files would be reformatted, 2 files would be left unchanged, '
+ '2 files would fail to reformat.',
+ )
+
+ def test_is_python36(self) -> None:
+ node = black.lib2to3_parse("def f(*, arg): ...\n")
+ self.assertFalse(black.is_python36(node))
+ node = black.lib2to3_parse("def f(*, arg,): ...\n")
+ self.assertTrue(black.is_python36(node))
+ node = black.lib2to3_parse("def f(*, arg): f'string'\n")
+ self.assertTrue(black.is_python36(node))
+ source, expected = read_data('function')
+ node = black.lib2to3_parse(source)
+ self.assertTrue(black.is_python36(node))
+ node = black.lib2to3_parse(expected)
+ self.assertTrue(black.is_python36(node))
+ source, expected = read_data('expression')
+ node = black.lib2to3_parse(source)
+ self.assertFalse(black.is_python36(node))
+ node = black.lib2to3_parse(expected)
+ self.assertFalse(black.is_python36(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}",
+ )
if __name__ == '__main__':
projects / etc / vim.git / blobdiff