898915d556
Avoids a Python 3.12 deprecation warning. Subtle difference: previously, timestamps in diff filenames had the `+0000` separated from the timestamp by space. With this, the space is there no more, and there is a colon, as in `+00:00`.
243 lines
9.0 KiB
Python
243 lines
9.0 KiB
Python
import re
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from typing import TYPE_CHECKING, Any, Callable, TypeVar
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from unittest.mock import patch
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import pytest
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from click.testing import CliRunner
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from tests.util import DETERMINISTIC_HEADER, read_data
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try:
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from aiohttp import web
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from aiohttp.test_utils import AioHTTPTestCase
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import blackd
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except ImportError as e:
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raise RuntimeError("Please install Black with the 'd' extra") from e
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if TYPE_CHECKING:
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F = TypeVar("F", bound=Callable[..., Any])
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unittest_run_loop: Callable[[F], F] = lambda x: x
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else:
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try:
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from aiohttp.test_utils import unittest_run_loop
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except ImportError:
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# unittest_run_loop is unnecessary and a no-op since aiohttp 3.8, and
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# aiohttp 4 removed it. To maintain compatibility we can make our own
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# no-op decorator.
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def unittest_run_loop(func, *args, **kwargs):
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return func
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@pytest.mark.blackd
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class BlackDTestCase(AioHTTPTestCase): # type: ignore[misc]
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def test_blackd_main(self) -> None:
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with patch("blackd.web.run_app"):
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result = CliRunner().invoke(blackd.main, [])
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if result.exception is not None:
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raise result.exception
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self.assertEqual(result.exit_code, 0)
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async def get_application(self) -> web.Application:
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return blackd.make_app()
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@unittest_run_loop
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async def test_blackd_request_needs_formatting(self) -> None:
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response = await self.client.post("/", data=b"print('hello world')")
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self.assertEqual(response.status, 200)
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self.assertEqual(response.charset, "utf8")
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self.assertEqual(await response.read(), b'print("hello world")\n')
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@unittest_run_loop
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async def test_blackd_request_no_change(self) -> None:
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response = await self.client.post("/", data=b'print("hello world")\n')
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self.assertEqual(response.status, 204)
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self.assertEqual(await response.read(), b"")
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@unittest_run_loop
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async def test_blackd_request_syntax_error(self) -> None:
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response = await self.client.post("/", data=b"what even ( is")
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self.assertEqual(response.status, 400)
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content = await response.text()
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self.assertTrue(
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content.startswith("Cannot parse"),
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msg=f"Expected error to start with 'Cannot parse', got {repr(content)}",
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)
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@unittest_run_loop
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async def test_blackd_unsupported_version(self) -> None:
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response = await self.client.post(
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"/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "2"}
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)
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self.assertEqual(response.status, 501)
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@unittest_run_loop
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async def test_blackd_supported_version(self) -> None:
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response = await self.client.post(
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"/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "1"}
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)
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self.assertEqual(response.status, 200)
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@unittest_run_loop
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async def test_blackd_invalid_python_variant(self) -> None:
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async def check(header_value: str, expected_status: int = 400) -> None:
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response = await self.client.post(
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"/",
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data=b"what",
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headers={blackd.PYTHON_VARIANT_HEADER: header_value},
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)
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self.assertEqual(response.status, expected_status)
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await check("lol")
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await check("ruby3.5")
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await check("pyi3.6")
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await check("py1.5")
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await check("2")
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await check("2.7")
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await check("py2.7")
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await check("2.8")
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await check("py2.8")
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await check("3.0")
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await check("pypy3.0")
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await check("jython3.4")
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@unittest_run_loop
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async def test_blackd_pyi(self) -> None:
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source, expected = read_data("miscellaneous", "stub.pyi")
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response = await self.client.post(
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"/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"}
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)
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self.assertEqual(response.status, 200)
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self.assertEqual(await response.text(), expected)
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@unittest_run_loop
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async def test_blackd_diff(self) -> None:
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diff_header = re.compile(
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r"(In|Out)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d\+\d\d:\d\d"
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)
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source, _ = read_data("miscellaneous", "blackd_diff")
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expected, _ = read_data("miscellaneous", "blackd_diff.diff")
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response = await self.client.post(
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"/", data=source, headers={blackd.DIFF_HEADER: "true"}
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)
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self.assertEqual(response.status, 200)
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actual = await response.text()
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actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
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self.assertEqual(actual, expected)
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@unittest_run_loop
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async def test_blackd_python_variant(self) -> None:
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code = (
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"def f(\n"
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" and_has_a_bunch_of,\n"
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" very_long_arguments_too,\n"
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" and_lots_of_them_as_well_lol,\n"
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" **and_very_long_keyword_arguments\n"
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"):\n"
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" pass\n"
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)
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async def check(header_value: str, expected_status: int) -> None:
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response = await self.client.post(
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"/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value}
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)
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self.assertEqual(
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response.status, expected_status, msg=await response.text()
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)
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await check("3.6", 200)
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await check("py3.6", 200)
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await check("3.6,3.7", 200)
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await check("3.6,py3.7", 200)
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await check("py36,py37", 200)
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await check("36", 200)
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await check("3.6.4", 200)
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await check("3.4", 204)
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await check("py3.4", 204)
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await check("py34,py36", 204)
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await check("34", 204)
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@unittest_run_loop
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async def test_blackd_line_length(self) -> None:
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response = await self.client.post(
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"/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"}
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)
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self.assertEqual(response.status, 200)
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@unittest_run_loop
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async def test_blackd_invalid_line_length(self) -> None:
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response = await self.client.post(
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"/",
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data=b'print("hello")\n',
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headers={blackd.LINE_LENGTH_HEADER: "NaN"},
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)
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self.assertEqual(response.status, 400)
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@unittest_run_loop
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async def test_blackd_skip_first_source_line(self) -> None:
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invalid_first_line = b"Header will be skipped\r\ni = [1,2,3]\nj = [1,2,3]\n"
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expected_result = b"Header will be skipped\r\ni = [1, 2, 3]\nj = [1, 2, 3]\n"
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response = await self.client.post("/", data=invalid_first_line)
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self.assertEqual(response.status, 400)
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response = await self.client.post(
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"/",
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data=invalid_first_line,
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headers={blackd.SKIP_SOURCE_FIRST_LINE: "true"},
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)
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self.assertEqual(response.status, 200)
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self.assertEqual(await response.read(), expected_result)
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@unittest_run_loop
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async def test_blackd_preview(self) -> None:
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response = await self.client.post(
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"/", data=b'print("hello")\n', headers={blackd.PREVIEW: "true"}
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)
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self.assertEqual(response.status, 204)
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@unittest_run_loop
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async def test_blackd_response_black_version_header(self) -> None:
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response = await self.client.post("/")
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self.assertIsNotNone(response.headers.get(blackd.BLACK_VERSION_HEADER))
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@unittest_run_loop
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async def test_cors_preflight(self) -> None:
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response = await self.client.options(
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"/",
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headers={
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"Access-Control-Request-Method": "POST",
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"Origin": "*",
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"Access-Control-Request-Headers": "Content-Type",
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},
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)
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self.assertEqual(response.status, 200)
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self.assertIsNotNone(response.headers.get("Access-Control-Allow-Origin"))
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self.assertIsNotNone(response.headers.get("Access-Control-Allow-Headers"))
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self.assertIsNotNone(response.headers.get("Access-Control-Allow-Methods"))
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@unittest_run_loop
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async def test_cors_headers_present(self) -> None:
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response = await self.client.post("/", headers={"Origin": "*"})
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self.assertIsNotNone(response.headers.get("Access-Control-Allow-Origin"))
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self.assertIsNotNone(response.headers.get("Access-Control-Expose-Headers"))
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@unittest_run_loop
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async def test_preserves_line_endings(self) -> None:
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for data in (b"c\r\nc\r\n", b"l\nl\n"):
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# test preserved newlines when reformatted
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response = await self.client.post("/", data=data + b" ")
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self.assertEqual(await response.text(), data.decode())
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# test 204 when no change
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response = await self.client.post("/", data=data)
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self.assertEqual(response.status, 204)
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@unittest_run_loop
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async def test_normalizes_line_endings(self) -> None:
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for data, expected in ((b"c\r\nc\n", "c\r\nc\r\n"), (b"l\nl\r\n", "l\nl\n")):
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response = await self.client.post("/", data=data)
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self.assertEqual(await response.text(), expected)
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self.assertEqual(response.status, 200)
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