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https://github.com/facebook/sapling.git
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a29d465ee8
Summary: With Facebook having been renamed Meta Platforms, we need to change the license headers. Reviewed By: fanzeyi Differential Revision: D33407812 fbshipit-source-id: b11bfbbf13a48873f0cea75f212cc7b07a68fb2e
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) Meta Platforms, Inc. and affiliates.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2.
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import errno
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import os
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from .lib import testcase
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@testcase.eden_repo_test
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class OpenExclusiveTest(testcase.EdenRepoTest):
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def populate_repo(self) -> None:
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self.repo.write_file("readme.txt", "test\n")
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self.repo.commit("Initial commit.")
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def test_oexcl(self) -> None:
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filename = os.path.join(self.mount, "makeme")
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fd = os.open(filename, os.O_EXCL | os.O_CREAT | os.O_RDWR)
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self.assertGreater(fd, -1, msg="Opened file exclusively")
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try:
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os.write(fd, b"foo\n")
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finally:
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os.close(fd)
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with self.assertRaises(OSError) as context:
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fd = os.open(filename, os.O_EXCL | os.O_CREAT | os.O_RDWR)
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if fd != -1:
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os.close(fd)
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self.assertEqual(
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errno.EEXIST,
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context.exception.errno,
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msg="O_EXCL for an existing file raises EEXIST",
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)
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os.unlink(filename)
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fd = os.open(filename, os.O_EXCL | os.O_CREAT | os.O_RDWR)
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self.assertGreater(
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fd, -1, msg="Subsequent O_EXCL is not blocked after " + "removing the file"
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)
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os.close(fd)
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