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Only require typing-extensions if Python < 3.8 (#1873)
[etc/vim.git] / tests / test_blackd.py
1 import re
2 import unittest
3 from unittest.mock import patch
4
5 from click.testing import CliRunner
6
7 from tests.util import read_data, DETERMINISTIC_HEADER, skip_if_exception
8
9 try:
10     import blackd
11     from aiohttp.test_utils import AioHTTPTestCase, unittest_run_loop
12     from aiohttp import web
13 except ImportError:
14     has_blackd_deps = False
15 else:
16     has_blackd_deps = True
17
18
19 class BlackDTestCase(AioHTTPTestCase):
20     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
21     def test_blackd_main(self) -> None:
22         with patch("blackd.web.run_app"):
23             result = CliRunner().invoke(blackd.main, [])
24             if result.exception is not None:
25                 raise result.exception
26             self.assertEqual(result.exit_code, 0)
27
28     async def get_application(self) -> web.Application:
29         return blackd.make_app()
30
31     # TODO: remove these decorators once the below is released
32     # https://github.com/aio-libs/aiohttp/pull/3727
33     @skip_if_exception("ClientOSError")
34     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
35     @unittest_run_loop
36     async def test_blackd_request_needs_formatting(self) -> None:
37         response = await self.client.post("/", data=b"print('hello world')")
38         self.assertEqual(response.status, 200)
39         self.assertEqual(response.charset, "utf8")
40         self.assertEqual(await response.read(), b'print("hello world")\n')
41
42     @skip_if_exception("ClientOSError")
43     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
44     @unittest_run_loop
45     async def test_blackd_request_no_change(self) -> None:
46         response = await self.client.post("/", data=b'print("hello world")\n')
47         self.assertEqual(response.status, 204)
48         self.assertEqual(await response.read(), b"")
49
50     @skip_if_exception("ClientOSError")
51     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
52     @unittest_run_loop
53     async def test_blackd_request_syntax_error(self) -> None:
54         response = await self.client.post("/", data=b"what even ( is")
55         self.assertEqual(response.status, 400)
56         content = await response.text()
57         self.assertTrue(
58             content.startswith("Cannot parse"),
59             msg=f"Expected error to start with 'Cannot parse', got {repr(content)}",
60         )
61
62     @skip_if_exception("ClientOSError")
63     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
64     @unittest_run_loop
65     async def test_blackd_unsupported_version(self) -> None:
66         response = await self.client.post(
67             "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "2"}
68         )
69         self.assertEqual(response.status, 501)
70
71     @skip_if_exception("ClientOSError")
72     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
73     @unittest_run_loop
74     async def test_blackd_supported_version(self) -> None:
75         response = await self.client.post(
76             "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "1"}
77         )
78         self.assertEqual(response.status, 200)
79
80     @skip_if_exception("ClientOSError")
81     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
82     @unittest_run_loop
83     async def test_blackd_invalid_python_variant(self) -> None:
84         async def check(header_value: str, expected_status: int = 400) -> None:
85             response = await self.client.post(
86                 "/", data=b"what", headers={blackd.PYTHON_VARIANT_HEADER: header_value}
87             )
88             self.assertEqual(response.status, expected_status)
89
90         await check("lol")
91         await check("ruby3.5")
92         await check("pyi3.6")
93         await check("py1.5")
94         await check("2.8")
95         await check("py2.8")
96         await check("3.0")
97         await check("pypy3.0")
98         await check("jython3.4")
99
100     @skip_if_exception("ClientOSError")
101     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
102     @unittest_run_loop
103     async def test_blackd_pyi(self) -> None:
104         source, expected = read_data("stub.pyi")
105         response = await self.client.post(
106             "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"}
107         )
108         self.assertEqual(response.status, 200)
109         self.assertEqual(await response.text(), expected)
110
111     @skip_if_exception("ClientOSError")
112     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
113     @unittest_run_loop
114     async def test_blackd_diff(self) -> None:
115         diff_header = re.compile(
116             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"
117         )
118
119         source, _ = read_data("blackd_diff.py")
120         expected, _ = read_data("blackd_diff.diff")
121
122         response = await self.client.post(
123             "/", data=source, headers={blackd.DIFF_HEADER: "true"}
124         )
125         self.assertEqual(response.status, 200)
126
127         actual = await response.text()
128         actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
129         self.assertEqual(actual, expected)
130
131     @skip_if_exception("ClientOSError")
132     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
133     @unittest_run_loop
134     async def test_blackd_python_variant(self) -> None:
135         code = (
136             "def f(\n"
137             "    and_has_a_bunch_of,\n"
138             "    very_long_arguments_too,\n"
139             "    and_lots_of_them_as_well_lol,\n"
140             "    **and_very_long_keyword_arguments\n"
141             "):\n"
142             "    pass\n"
143         )
144
145         async def check(header_value: str, expected_status: int) -> None:
146             response = await self.client.post(
147                 "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value}
148             )
149             self.assertEqual(
150                 response.status, expected_status, msg=await response.text()
151             )
152
153         await check("3.6", 200)
154         await check("py3.6", 200)
155         await check("3.6,3.7", 200)
156         await check("3.6,py3.7", 200)
157         await check("py36,py37", 200)
158         await check("36", 200)
159         await check("3.6.4", 200)
160
161         await check("2", 204)
162         await check("2.7", 204)
163         await check("py2.7", 204)
164         await check("3.4", 204)
165         await check("py3.4", 204)
166         await check("py34,py36", 204)
167         await check("34", 204)
168
169     @skip_if_exception("ClientOSError")
170     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
171     @unittest_run_loop
172     async def test_blackd_line_length(self) -> None:
173         response = await self.client.post(
174             "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"}
175         )
176         self.assertEqual(response.status, 200)
177
178     @skip_if_exception("ClientOSError")
179     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
180     @unittest_run_loop
181     async def test_blackd_invalid_line_length(self) -> None:
182         response = await self.client.post(
183             "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "NaN"}
184         )
185         self.assertEqual(response.status, 400)
186
187     @skip_if_exception("ClientOSError")
188     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
189     @unittest_run_loop
190     async def test_blackd_response_black_version_header(self) -> None:
191         response = await self.client.post("/")
192         self.assertIsNotNone(response.headers.get(blackd.BLACK_VERSION_HEADER))