def test_expression_diff(self) -> None:
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
diff_header = re.compile(
rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
rf"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d")
hold_stdout = sys.stdout
try:
sys.stdout = TextIOWrapper(BytesIO(), encoding="utf8")
self.assertTrue(ff(tmp_file, write_back=black.WriteBack.DIFF))
sys.stdout.seek(0)
actual = sys.stdout.read()
actual = diff_header.sub("[Deterministic header]", actual)
finally:
sys.stdout = hold_stdout
os.unlink(tmp_file)
actual = actual.rstrip() + "\n" # the diff output has a trailing space
if expected != actual:
dump = black.dump_to_file(actual)
msg = (
f"Expected diff isn't equal to the actual. If you made changes "
f"to expression.py and this is an anticipated difference, "
f"overwrite tests/expression.diff with {dump}")
self.assertEqual(expected, actual, msg)
def test_empty_ff(self) -> None:
expected = ""
tmp_file = Path(black.dump_to_file())
try:
self.assertFalse(ff(tmp_file, write_back=black.WriteBack.YES))
with open(tmp_file, encoding="utf8") as f:
actual = f.read()
finally:
os.unlink(tmp_file)
self.assertFormatEqual(expected, actual)
def test_expression_ff(self) -> None:
source, expected = read_data("expression")
tmp_file = Path(black.dump_to_file(source))
try:
self.assertTrue(ff(tmp_file, write_back=black.WriteBack.YES))
with open(tmp_file, encoding="utf8") as f:
actual = f.read()
finally:
os.unlink(tmp_file)
self.assertFormatEqual(expected, actual)
with patch("black.dump_to_file", dump_to_stderr):
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
def test_expression_diff(self) -> None:
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
hold_stdout = sys.stdout
try:
sys.stdout = StringIO()
self.assertTrue(ff(tmp_file, write_back=black.WriteBack.DIFF))
sys.stdout.seek(0)
actual = sys.stdout.read()
actual = actual.replace(str(tmp_file), "<stdin>")
finally:
sys.stdout = hold_stdout
os.unlink(tmp_file)
actual = actual.rstrip() + "\n" # the diff output has a trailing space
if expected != actual:
dump = black.dump_to_file(actual)
msg = (
f"Expected diff isn't equal to the actual. If you made changes "
f"to expression.py and this is an anticipated difference, "
f"overwrite tests/expression.diff with {dump}")
self.assertEqual(expected, actual, msg)
def test_expression_ff(self) -> None:
source, expected = read_data("expression")
tmp_file = Path(black.dump_to_file(source))
try:
self.assertTrue(ff(tmp_file, write_back=black.WriteBack.YES))
with open(tmp_file, encoding="utf8") as f:
actual = f.read()
finally:
os.unlink(tmp_file)
self.assertFormatEqual(expected, actual)
with patch("black.dump_to_file", dump_to_stderr):
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
def test_expression_diff(self) -> None:
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
hold_stdout = sys.stdout
try:
sys.stdout = StringIO()
self.assertTrue(ff(tmp_file, write_back=black.WriteBack.DIFF))
sys.stdout.seek(0)
actual = sys.stdout.read()
actual = actual.replace(str(tmp_file), "<stdin>")
finally:
sys.stdout = hold_stdout
os.unlink(tmp_file)
actual = actual.rstrip() + "\n" # the diff output has a trailing space
if expected != actual:
dump = black.dump_to_file(actual)
msg = (
f"Expected diff isn't equal to the actual. If you made changes "
f"to expression.py and this is an anticipated difference, "
f"overwrite tests/expression.diff with {dump}"
)
self.assertEqual(expected, actual, msg)
def test_expression_diff(self) -> None:
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
diff_header = re.compile(
rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
rf"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d")
stderrbuf = BytesIO()
try:
result = BlackRunner(stderrbuf).invoke(
black.main, ["--diff", str(tmp_file)])
self.assertEqual(result.exit_code, 0)
finally:
os.unlink(tmp_file)
actual = result.output
actual = diff_header.sub("[Deterministic header]", actual)
actual = actual.rstrip() + "\n" # the diff output has a trailing space
if expected != actual:
dump = black.dump_to_file(actual)
msg = (
f"Expected diff isn't equal to the actual. If you made changes "
f"to expression.py and this is an anticipated difference, "
f"overwrite tests/expression.diff with {dump}")
self.assertEqual(expected, actual, msg)
def test_expression_diff(self) -> None:
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
hold_stdout = sys.stdout
try:
sys.stdout = StringIO()
self.assertTrue(ff(tmp_file, write_back=black.WriteBack.DIFF))
sys.stdout.seek(0)
actual = sys.stdout.read()
actual = actual.replace(tmp_file.name, "<stdin>")
finally:
sys.stdout = hold_stdout
os.unlink(tmp_file)
actual = actual.rstrip() + "\n" # the diff output has a trailing space
self.assertEqual(expected, actual)
def test_black():
test_file = os.path.join(TEST_DIR, "bad_continuation_tabs.py")
with open(test_file, "r") as f:
orig_contents = f.read()
orig_filepath = dump_to_file(orig_contents)
expected_file = test_file.replace(".py", ".blacked.py")
with open(expected_file, "r") as f:
expected_contents = f.read()
transformer = Black()
transformer.transform([orig_filepath])
with open(orig_filepath, "r") as f:
actual_contents = f.read()
os.remove(orig_filepath)
assert actual_contents == expected_contents
def test_pyautodev():
test_file = os.path.join(TEST_DIR, "comment_overflow.py")
with open(test_file, 'r') as f:
orig_contents = f.read()
orig_filepath = dump_to_file(orig_contents)
expected_file = test_file.replace(".py", ".pyautodev.py")
with open(expected_file, "r") as f:
expected_contents = f.read()
transformer = PyAutoDev()
transformer.transform([orig_filepath])
with open(orig_filepath, "r") as f:
actual_contents = f.read()
os.remove(orig_filepath)
assert actual_contents == expected_contents
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_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_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("out", out), patch("err", err):
DebugVisitor.show(source)
actual = "\n".join(out_lines) + "\n"
log_name = ""
if expected != actual:
log_name = dump_to_file(*out_lines)
self.assertEqual(
expected,
actual,
f"AST print out is different. Actual version dumped to {log_name}",
)