aa31a117b1
* Add STDIN test to primer - Check that out STDIN black support stays working - Add asyncio.subprocess STDIN pip via communicate - We just check we format python code from primer's `lib.py` Fixes #2310
227 lines
7.5 KiB
Python
227 lines
7.5 KiB
Python
#!/usr/bin/env python3
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import asyncio
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import sys
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import unittest
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from contextlib import contextmanager
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from copy import deepcopy
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from io import StringIO
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from os import getpid
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from pathlib import Path
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from platform import system
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from subprocess import CalledProcessError
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from tempfile import TemporaryDirectory, gettempdir
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from typing import Any, Callable, Generator, Iterator, Tuple
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from unittest.mock import Mock, patch
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from click.testing import CliRunner
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from black_primer import cli, lib
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EXPECTED_ANALYSIS_OUTPUT = """\
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-- primer results 📊 --
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68 / 69 succeeded (98.55%) ✅
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1 / 69 FAILED (1.45%) 💩
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- 0 projects disabled by config
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- 0 projects skipped due to Python version
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- 0 skipped due to long checkout
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Failed projects:
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## black:
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- Returned 69
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- stdout:
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Black didn't work
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"""
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FAKE_PROJECT_CONFIG = {
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"cli_arguments": ["--unittest"],
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"expect_formatting_changes": False,
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"git_clone_url": "https://github.com/psf/black.git",
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}
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@contextmanager
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def capture_stdout(command: Callable, *args: Any, **kwargs: Any) -> Generator:
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old_stdout, sys.stdout = sys.stdout, StringIO()
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try:
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command(*args, **kwargs)
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sys.stdout.seek(0)
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yield sys.stdout.read()
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finally:
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sys.stdout = old_stdout
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@contextmanager
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def event_loop() -> Iterator[None]:
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policy = asyncio.get_event_loop_policy()
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loop = policy.new_event_loop()
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asyncio.set_event_loop(loop)
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if sys.platform == "win32":
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asyncio.set_event_loop(asyncio.ProactorEventLoop())
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try:
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yield
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finally:
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loop.close()
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async def raise_subprocess_error_1(*args: Any, **kwargs: Any) -> None:
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raise CalledProcessError(1, ["unittest", "error"], b"", b"")
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async def raise_subprocess_error_123(*args: Any, **kwargs: Any) -> None:
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raise CalledProcessError(123, ["unittest", "error"], b"", b"")
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async def return_false(*args: Any, **kwargs: Any) -> bool:
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return False
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async def return_subproccess_output(*args: Any, **kwargs: Any) -> Tuple[bytes, bytes]:
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return (b"stdout", b"stderr")
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async def return_zero(*args: Any, **kwargs: Any) -> int:
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return 0
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class PrimerLibTests(unittest.TestCase):
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def test_analyze_results(self) -> None:
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fake_results = lib.Results(
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{
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"disabled": 0,
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"failed": 1,
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"skipped_long_checkout": 0,
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"success": 68,
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"wrong_py_ver": 0,
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},
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{"black": CalledProcessError(69, ["black"], b"Black didn't work", b"")},
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)
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with capture_stdout(lib.analyze_results, 69, fake_results) as analyze_stdout:
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self.assertEqual(EXPECTED_ANALYSIS_OUTPUT, analyze_stdout)
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@event_loop()
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def test_black_run(self) -> None:
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"""Pretend to run Black to ensure we cater for all scenarios"""
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loop = asyncio.get_event_loop()
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project_name = "unittest"
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repo_path = Path(gettempdir())
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project_config = deepcopy(FAKE_PROJECT_CONFIG)
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results = lib.Results({"failed": 0, "success": 0}, {})
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# Test a successful Black run
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with patch("black_primer.lib._gen_check_output", return_subproccess_output):
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loop.run_until_complete(
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lib.black_run(project_name, repo_path, project_config, results)
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)
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self.assertEqual(1, results.stats["success"])
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self.assertFalse(results.failed_projects)
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# Test a fail based on expecting formatting changes but not getting any
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project_config["expect_formatting_changes"] = True
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results = lib.Results({"failed": 0, "success": 0}, {})
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with patch("black_primer.lib._gen_check_output", return_subproccess_output):
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loop.run_until_complete(
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lib.black_run(project_name, repo_path, project_config, results)
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)
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self.assertEqual(1, results.stats["failed"])
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self.assertTrue(results.failed_projects)
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# Test a fail based on returning 1 and not expecting formatting changes
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project_config["expect_formatting_changes"] = False
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results = lib.Results({"failed": 0, "success": 0}, {})
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with patch("black_primer.lib._gen_check_output", raise_subprocess_error_1):
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loop.run_until_complete(
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lib.black_run(project_name, repo_path, project_config, results)
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)
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self.assertEqual(1, results.stats["failed"])
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self.assertTrue(results.failed_projects)
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# Test a formatting error based on returning 123
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with patch("black_primer.lib._gen_check_output", raise_subprocess_error_123):
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loop.run_until_complete(
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lib.black_run(project_name, repo_path, project_config, results)
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)
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self.assertEqual(2, results.stats["failed"])
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@event_loop()
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def test_gen_check_output(self) -> None:
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loop = asyncio.get_event_loop()
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stdout, stderr = loop.run_until_complete(
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lib._gen_check_output([lib.BLACK_BINARY, "--help"])
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)
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self.assertTrue("The uncompromising code formatter" in stdout.decode("utf8"))
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self.assertEqual(None, stderr)
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# TODO: Add a test to see failure works on Windows
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if lib.WINDOWS:
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return
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false_bin = "/usr/bin/false" if system() == "Darwin" else "/bin/false"
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with self.assertRaises(CalledProcessError):
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loop.run_until_complete(lib._gen_check_output([false_bin]))
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with self.assertRaises(asyncio.TimeoutError):
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loop.run_until_complete(
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lib._gen_check_output(["/bin/sleep", "2"], timeout=0.1)
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)
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@event_loop()
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def test_git_checkout_or_rebase(self) -> None:
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loop = asyncio.get_event_loop()
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project_config = deepcopy(FAKE_PROJECT_CONFIG)
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work_path = Path(gettempdir())
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expected_repo_path = work_path / "black"
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with patch("black_primer.lib._gen_check_output", return_subproccess_output):
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returned_repo_path = loop.run_until_complete(
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lib.git_checkout_or_rebase(work_path, project_config)
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)
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self.assertEqual(expected_repo_path, returned_repo_path)
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@patch("sys.stdout", new_callable=StringIO)
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@event_loop()
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def test_process_queue(self, mock_stdout: Mock) -> None:
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loop = asyncio.get_event_loop()
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config_path = Path(lib.__file__).parent / "primer.json"
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with patch("black_primer.lib.git_checkout_or_rebase", return_false):
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with TemporaryDirectory() as td:
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return_val = loop.run_until_complete(
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lib.process_queue(str(config_path), td, 2)
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)
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self.assertEqual(0, return_val)
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class PrimerCLITests(unittest.TestCase):
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@event_loop()
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def test_async_main(self) -> None:
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loop = asyncio.get_event_loop()
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work_dir = Path(gettempdir()) / f"primer_ut_{getpid()}"
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args = {
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"config": "/config",
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"debug": False,
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"keep": False,
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"long_checkouts": False,
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"rebase": False,
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"workdir": str(work_dir),
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"workers": 69,
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"no_diff": False,
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}
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with patch("black_primer.cli.lib.process_queue", return_zero):
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return_val = loop.run_until_complete(cli.async_main(**args))
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self.assertEqual(0, return_val)
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def test_handle_debug(self) -> None:
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self.assertTrue(cli._handle_debug(None, None, True))
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def test_help_output(self) -> None:
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runner = CliRunner()
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result = runner.invoke(cli.main, ["--help"])
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self.assertEqual(result.exit_code, 0)
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if __name__ == "__main__":
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unittest.main()
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