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https://github.com/zebrajr/pytorch.git
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b936a10074
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/65162 Test Plan: Imported from OSS Reviewed By: driazati Differential Revision: D30998006 Pulled By: dagitses fbshipit-source-id: 8b8d45668acf0e6c0f16df0f705a1af8c6d4f22d
85 lines
3.2 KiB
Python
85 lines
3.2 KiB
Python
import contextlib
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import os
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import typing
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from typing import Iterator, Optional, Sequence
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import unittest
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import unittest.mock
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import tools.setup_helpers.env # noqa: F401 unused but resolves circular import
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import tools.setup_helpers.cmake
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T = typing.TypeVar('T')
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class TestCMake(unittest.TestCase):
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@unittest.mock.patch('multiprocessing.cpu_count')
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def test_build_jobs(self, mock_cpu_count: unittest.mock.MagicMock) -> None:
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"""Tests that the number of build jobs comes out correctly."""
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mock_cpu_count.return_value = 13
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cases = [
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# MAX_JOBS, USE_NINJA, IS_WINDOWS, want
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(( '8', True, False), ['-j', '8']), # noqa: E201,E241
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(( None, True, False), ['-j', '13']), # noqa: E201,E241
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(( None, True, True), ['-j', '13']), # noqa: E201,E241
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(( None, False, True), ['/p:CL_MPCount=13']), # noqa: E201,E241
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]
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for (max_jobs, use_ninja, is_windows), want in cases:
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with self.subTest(MAX_JOBS=max_jobs, USE_NINJA=use_ninja, IS_WINDOWS=is_windows):
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with contextlib.ExitStack() as stack:
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stack.enter_context(env_var('MAX_JOBS', max_jobs))
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stack.enter_context(unittest.mock.patch.object(tools.setup_helpers.cmake, 'USE_NINJA', use_ninja))
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stack.enter_context(unittest.mock.patch.object(tools.setup_helpers.cmake, 'IS_WINDOWS', is_windows))
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cmake = tools.setup_helpers.cmake.CMake()
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with unittest.mock.patch.object(cmake, 'run') as cmake_run:
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cmake.build({})
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cmake_run.assert_called_once()
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call, = cmake_run.mock_calls
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build_args, _ = call.args
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self.assert_contains_sequence(build_args, want)
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@staticmethod
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def assert_contains_sequence(sequence: Sequence[T], subsequence: Sequence[T]) -> None:
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"""Raises an assertion if the subsequence is not contained in the sequence."""
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if len(subsequence) == 0:
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return # all sequences contain the empty subsequence
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# Iterate over all windows of len(subsequence). Stop if the
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# window matches.
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for i in range(len(sequence) - len(subsequence) + 1):
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candidate = sequence[i : i + len(subsequence)]
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assert len(candidate) == len(subsequence) # sanity check
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if candidate == subsequence:
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return # found it
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raise AssertionError(f'{subsequence} not found in {sequence}')
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@contextlib.contextmanager
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def env_var(key: str, value: Optional[str]) -> Iterator[None]:
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"""Sets/clears an environment variable within a Python context."""
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# Get the previous value and then override it.
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previous_value = os.environ.get(key)
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set_env_var(key, value)
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try:
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yield
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finally:
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# Restore to previous value.
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set_env_var(key, previous_value)
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def set_env_var(key: str, value: Optional[str]) -> None:
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"""Sets/clears an environment variable."""
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if value is None:
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os.environ.pop(key, None)
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else:
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os.environ[key] = value
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if __name__ == "__main__":
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unittest.main()
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