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GeezerVison is showing github.com — black/tests/test_blackd.py at main · psf/black Expand file tree/ Copy pathtest_blackd.pyMore file actions 553 lines (469 loc) · 21.2 KB / Copy pathtest_blackd.pyFile metadata and controls553 lines (469 loc) · 21.2 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 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https://github.com/python/cpython/issues/124706 gc.collect() super().tearDown() def test_blackd_main(self) -> None: with patch("blackd.web.run_app"): result = CliRunner().invoke(blackd.main, []) if result.exception is not None: raise result.exception self.assertEqual(result.exit_code, 0) async def get_application(self) -> web.Application: return blackd.make_app() async def test_blackd_request_needs_formatting(self) -> None: response = await self.client.post("/", data=b"print('hello world')") self.assertEqual(response.status, 200) self.assertEqual(response.charset, "utf8") self.assertEqual(await response.read(), b'print("hello world")\n') async def test_blackd_request_no_change(self) -> None: response = await self.client.post("/", data=b'print("hello world")\n') self.assertEqual(response.status, 204) self.assertEqual(await response.read(), b"") async def test_blackd_request_syntax_error(self) -> None: response = await self.client.post("/", data=b"what even ( is") self.assertEqual(response.status, 400) content = await response.text() self.assertTrue( content.startswith("cannot parse"), msg=f"Expected error to start with 'cannot parse', got {repr(content)}", ) async def test_blackd_request_invalid_encoding(self) -> None: response = await self.client.post("/", data=b"name = '\xff'") self.assertEqual(response.status, 400) self.assertIn("decode", await response.text()) self.assertEqual( response.headers.get(blackd.BLACK_VERSION_HEADER), black.__version__ ) async def test_blackd_request_unknown_charset(self) -> None: response = await self.client.post( "/", data=b"x=1", headers={"Content-Type": "text/plain; charset=unknown-charset"}, ) self.assertEqual(response.status, 400) self.assertIn("unknown encoding", await response.text()) async def test_blackd_request_undecodable_charset(self) -> None: response = await self.client.post( "/", data=b"x=1", headers={"Content-Type": "text/plain; charset=undefined"}, ) self.assertEqual(response.status, 400) self.assertIn("undefined", await response.text()) async def test_blackd_request_non_utf8_charset(self) -> None: response = await self.client.post( "/", data=b"name = '\xe9'", headers={"Content-Type": "text/plain; charset=iso-8859-1"}, ) self.assertEqual(response.status, 200) self.assertEqual(await response.read(), b'name = "\xe9"\n') async def test_blackd_unsupported_version(self) -> None: response = await self.client.post( "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "2"} ) self.assertEqual(response.status, 501) async def test_blackd_supported_version(self) -> None: response = await self.client.post( "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "1"} ) self.assertEqual(response.status, 200) async def test_blackd_invalid_python_variant(self) -> None: async def check(header_value: str, expected_status: int = 400) -> None: response = await self.client.post( "/", data=b"what", headers={blackd.PYTHON_VARIANT_HEADER: header_value}, ) self.assertEqual(response.status, expected_status) await check("lol") await check("ruby3.5") await check("pyi3.6") await check("py1.5") await check("2") await check("2.7") await check("py2.7") await check("2.8") await check("py2.8") await check("3.0") await check("pypy3.0") await check("jython3.4") await check("") await check(" ") await check("py") await check("3.6,") await check("3.6, ,3.7") await check("py3.6,,py3.7") async def test_blackd_pyi(self) -> None: source, expected = read_data("cases", "stub.py") response = await self.client.post( "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"} ) self.assertEqual(response.status, 200) self.assertEqual(await response.text(), expected) response = await self.client.post( "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: " pyi "} ) self.assertEqual(response.status, 200) self.assertEqual(await response.text(), expected) async def test_blackd_diff(self) -> None: diff_header = re.compile( 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" ) source, _ = read_data("miscellaneous", "blackd_diff") expected, _ = read_data("miscellaneous", "blackd_diff.diff") response = await self.client.post( "/", data=source, headers={blackd.DIFF_HEADER: "true"} ) self.assertEqual(response.status, 200) actual = await response.text() actual = diff_header.sub(DETERMINISTIC_HEADER, actual) self.assertEqual(actual, expected) async def test_blackd_python_variant(self) -> None: code = ( "def f(\n" " and_has_a_bunch_of,\n" " very_long_arguments_too,\n" " and_lots_of_them_as_well_lol,\n" " **and_very_long_keyword_arguments\n" "):\n" " pass\n" ) async def check(header_value: str, expected_status: int) -> None: response = await self.client.post( "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value} ) self.assertEqual( response.status, expected_status, msg=await response.text() ) await check("3.6", 200) await check("py3.6", 200) await check("3.6,3.7", 200) await check("3.6, 3.7", 200) await check("3.6,py3.7", 200) await check("3.6, py3.7", 200) await check("py3.6, py3.7", 200) await check(" py3.6 , py3.7 ", 200) await check("py36,py37", 200) await check("py36, py37", 200) await check("36", 200) await check("3.6.4", 200) await check("3.4", 204) await check("py3.4", 204) await check("py34,py36", 204) await check("py34, py36", 204) await check("34", 204) async def test_blackd_line_length(self) -> None: response = await self.client.post( "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"} ) self.assertEqual(response.status, 200) async def test_blackd_invalid_line_length(self) -> None: response = await self.client.post( "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "NaN"}, ) self.assertEqual(response.status, 400) async def test_blackd_skip_first_source_line(self) -> None: invalid_first_line = b"Header will be skipped\r\ni = [1,2,3]\nj = [1,2,3]\n" expected_result = b"Header will be skipped\r\ni = [1, 2, 3]\nj = [1, 2, 3]\n" response = await self.client.post("/", data=invalid_first_line) self.assertEqual(response.status, 400) response = await self.client.post( "/", data=invalid_first_line, headers={blackd.SKIP_SOURCE_FIRST_LINE: "true"}, ) self.assertEqual(response.status, 200) self.assertEqual(await response.read(), expected_result) async def test_blackd_skip_first_source_line_with_diff(self) -> None: source = b"#!/usr/bin/env python\ni = [1,2,3]\n" response = await self.client.post( "/", data=source, headers={ blackd.SKIP_SOURCE_FIRST_LINE: "true", blackd.DIFF_HEADER: "true", }, ) self.assertEqual(response.status, 200) diff_header = re.compile( 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" ) actual = diff_header.sub(DETERMINISTIC_HEADER, await response.text()) # The skipped line must stay inside the patch as context, so that the body is # a diff of the whole source rather than a raw source line in front of it. self.assertEqual( actual, "--- [Deterministic header]\n" "+++ [Deterministic header]\n" "@@ -1,2 +1,2 @@\n" " #!/usr/bin/env python\n" "-i = [1,2,3]\n" "+i = [1, 2, 3]\n", ) async def test_blackd_preview(self) -> None: response = await self.client.post( "/", data=b'print("hello")\n', headers={blackd.PREVIEW: "true"} ) self.assertEqual(response.status, 204) async def test_blackd_response_black_version_header(self) -> None: response = await self.client.post("/") self.assertIsNotNone(response.headers.get(blackd.BLACK_VERSION_HEADER)) async def test_cors_preflight(self) -> None: response = await self.client.options( "/", headers={ "Access-Control-Request-Method": "POST", "Origin": "https://example.com", "Access-Control-Request-Headers": "Content-Type", }, ) self.assertEqual(response.status, 403) self.assertIsNone(response.headers.get("Access-Control-Allow-Origin")) self.assertIsNone(response.headers.get("Access-Control-Allow-Headers")) self.assertIsNone(response.headers.get("Access-Control-Allow-Methods")) async def test_cors_requests_rejected_by_default(self) -> None: response = await self.client.post( "/", headers={"Origin": "https://example.com"} ) self.assertEqual(response.status, 403) self.assertIsNone(response.headers.get("Access-Control-Allow-Origin")) self.assertIsNone(response.headers.get("Access-Control-Expose-Headers")) async def test_blackd_format_code_limits_executor_queue(self) -> None: started = Event() release = Event() calls: list[str] = [] executor = ThreadPoolExecutor(max_workers=2) executor_semaphore = asyncio.BoundedSemaphore(1) def slow_format(src: str, *, fast: bool, mode: black.Mode) -> str: calls.append(src) started.set() release.wait(timeout=1) return src try: with patch("blackd.black.format_file_contents", side_effect=slow_format): task1 = asyncio.create_task( blackd.format_code( req_str="print(1)\n", fast=False, mode=black.Mode(), then=datetime.now(timezone.utc), only_diff=False, executor=executor, executor_semaphore=executor_semaphore, ) ) for _ in range(20): if started.is_set(): break await asyncio.sleep(0.01) self.assertTrue(started.is_set()) task2 = asyncio.create_task( blackd.format_code( req_str="print(2)\n", fast=False, mode=black.Mode(), then=datetime.now(timezone.utc), only_diff=False, executor=executor, executor_semaphore=executor_semaphore, ) ) await asyncio.sleep(0.05) self.assertEqual(len(calls), 1) release.set() self.assertEqual(await task1, "print(1)\n") self.assertEqual(await task2, "print(2)\n") self.assertEqual(len(calls), 2) finally: executor.shutdown(wait=True) async def test_preserves_line_endings(self) -> None: for data in (b"c\r\nc\r\n", b"l\nl\n"): # test preserved newlines when reformatted response = await self.client.post("/", data=data + b" ") self.assertEqual(await response.text(), data.decode()) # test 204 when no change response = await self.client.post("/", data=data) self.assertEqual(response.status, 204) async def test_normalizes_line_endings(self) -> None: for data, expected in ((b"c\r\nc\n", "c\r\nc\r\n"), (b"l\nl\r\n", "l\nl\n")): response = await self.client.post("/", data=data) self.assertEqual(await response.text(), expected) self.assertEqual(response.status, 200) async def test_single_character(self) -> None: response = await self.client.post("/", data="1") self.assertEqual(await response.text(), "1\n") self.assertEqual(response.status, 200) @pytest.mark.blackd class BlackDConfiguredCorsTestCase(AioHTTPTestCase): def tearDown(self) -> None: gc.collect() super().tearDown() async def get_application(self) -> web.Application: return blackd.make_app(cors_allow_origins=("https://example.com",)) async def test_cors_preflight(self) -> None: response = await self.client.options( "/", headers={ "Access-Control-Request-Method": "POST", "Origin": "https://example.com", "Access-Control-Request-Headers": "Content-Type", }, ) self.assertEqual(response.status, 200) self.assertEqual( response.headers.get("Access-Control-Allow-Origin"), "https://example.com", ) self.assertIsNotNone(response.headers.get("Access-Control-Allow-Headers")) self.assertIsNotNone(response.headers.get("Access-Control-Allow-Methods")) async def test_cors_headers_present(self) -> None: response = await self.client.post( "/", headers={"Origin": "https://example.com"} ) self.assertEqual( response.headers.get("Access-Control-Allow-Origin"), "https://example.com", ) self.assertIn( blackd.BLACK_VERSION_HEADER, response.headers.get("Access-Control-Expose-Headers", ""), ) @pytest.mark.blackd class BlackDSmallBodyLimitTestCase(AioHTTPTestCase): def tearDown(self) -> None: gc.collect() super().tearDown() async def get_application(self) -> web.Application: return blackd.make_app(max_body_size=16) async def test_blackd_rejects_large_request_body(self) -> None: response = await self.client.post("/", data=b"x" * 17) self.assertEqual(response.status, 413) @pytest.mark.blackd class BlackDClientTestCase(AioHTTPTestCase): def tearDown(self) -> None: # Work around https://github.com/python/cpython/issues/124706 gc.collect() super().tearDown() async def get_application(self) -> web.Application: return blackd.make_app() async def test_unformatted_code(self) -> None: client = blackd.client.BlackDClient(self.client.make_url("/")) unformatted_code = "def hello(): print('Hello, World!')" expected = 'def hello():\n print("Hello, World!")\n' formatted_code = await client.format_code(unformatted_code) self.assertEqual(formatted_code, expected) async def test_formatted_code(self) -> None: client = blackd.client.BlackDClient(self.client.make_url("/")) initial_code = 'def hello():\n print("Hello, World!")\n' expected = 'def hello():\n print("Hello, World!")\n' formatted_code = await client.format_code(initial_code) self.assertEqual(formatted_code, expected) async def test_line_length(self) -> None: client = blackd.client.BlackDClient(self.client.make_url("/"), line_length=10) unformatted_code = "def hello(): print('Hello, World!')" expected = 'def hello():\n print(\n "Hello, World!"\n )\n' formatted_code = await client.format_code(unformatted_code) self.assertEqual(formatted_code, expected) async def test_custom_content_type_charset(self) -> None: for header_name in ("Content-Type", "content-type", "CoNtEnT-TyPe"): for content_type in ( "text/plain", "text/plain; charset=utf-8", "text/plain; charset=iso-8859-1", "text/plain; charset=windows-1252", "text/plain; charset=utf-16", ): for source in ("message='café'", 'message = "café"\n'): with self.subTest( header_name=header_name, content_type=content_type, source=source, ): client = blackd.client.BlackDClient( self.client.make_url("/"), headers={header_name: content_type}, ) formatted_code = await client.format_code(source) self.assertEqual(formatted_code, 'message = "café"\n') async def test_skip_source_first_line(self) -> None: client = blackd.client.BlackDClient( self.client.make_url("/"), skip_source_first_line=True ) invalid_first_line = "Header will be skipped\r\ni = [1,2,3]\nj = [1,2,3]\n" expected_result = "Header will be skipped\r\ni = [1, 2, 3]\nj = [1, 2, 3]\n" formatted_code = await client.format_code(invalid_first_line) self.assertEqual(formatted_code, expected_result) async def test_skip_string_normalization(self) -> None: client = blackd.client.BlackDClient( self.client.make_url("/"), skip_string_normalization=True ) unformatted_code = "def hello(): print('Hello, World!')" expected = "def hello():\n print('Hello, World!')\n" formatted_code = await client.format_code(unformatted_code) self.assertEqual(formatted_code, expected) async def test_skip_magic_trailing_comma(self) -> None: client = blackd.client.BlackDClient( self.client.make_url("/"), skip_magic_trailing_comma=True ) unformatted_code = "def hello(): print('Hello, World!')" expected = 'def hello():\n print("Hello, World!")\n' formatted_code = await client.format_code(unformatted_code) self.assertEqual(formatted_code, expected) async def test_preview(self) -> None: client = blackd.client.BlackDClient(self.client.make_url("/"), preview=True) unformatted_code = "def hello(): print('Hello, World!')" expected = 'def hello():\n print("Hello, World!")\n' formatted_code = await client.format_code(unformatted_code) self.assertEqual(formatted_code, expected) async def test_fast(self) -> None: client = blackd.client.BlackDClient(self.client.make_url("/"), fast=True) unformatted_code = "def hello(): print('Hello, World!')" expected = 'def hello():\n print("Hello, World!")\n' formatted_code = await client.format_code(unformatted_code) self.assertEqual(formatted_code, expected) async def test_python_variant(self) -> None: client = blackd.client.BlackDClient( self.client.make_url("/"), python_variant="3.6" ) unformatted_code = "def hello(): print('Hello, World!')" expected = 'def hello():\n print("Hello, World!")\n' formatted_code = await client.format_code(unformatted_code) self.assertEqual(formatted_code, expected) async def test_diff(self) -> None: diff_header = re.compile( 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" ) client = blackd.client.BlackDClient(self.client.make_url("/"), diff=True) source, _ = read_data("miscellaneous", "blackd_diff") expected, _ = read_data("miscellaneous", "blackd_diff.diff") diff = await client.format_code(source) diff = diff_header.sub(DETERMINISTIC_HEADER, diff) self.assertEqual(diff, expected) async def test_syntax_error(self) -> None: client = blackd.client.BlackDClient(self.client.make_url("/")) with_syntax_error = "def hello(): a 'Hello, World!'" with self.assertRaises(black.InvalidInput): _ = await client.format_code(with_syntax_error) |
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