Mercurial > hg
view tests/test-simplekeyvaluefile.py @ 47682:78f7f0d490ee
dirstate-v2: Move fixed-size tree metadata into the docket file
Before this changeset, the dirstate-v2 data file contained not only nodes
and paths that may be reused when appending to an existing file,
but also some fixed-size metadata that applies to the entire tree
and was added at the end of the data file for every append.
This moves that metadata into the docket file, so that repeated "append"
operations without meaningful changes don’t actually need to grow any file.
Differential Revision: https://phab.mercurial-scm.org/D11098
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Thu, 15 Jul 2021 23:02:17 +0200 |
parents | 2372284d9457 |
children | 6000f5b25c9b |
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from __future__ import absolute_import import unittest import silenttestrunner from mercurial import ( error, scmutil, ) class mockfile(object): def __init__(self, name, fs): self.name = name self.fs = fs def __enter__(self): return self def __exit__(self, *args, **kwargs): pass def write(self, text): self.fs.contents[self.name] = text def read(self): return self.fs.contents[self.name] class mockvfs(object): def __init__(self): self.contents = {} def read(self, path): return mockfile(path, self).read() def readlines(self, path): # lines need to contain the trailing '\n' to mock the real readlines return [l for l in mockfile(path, self).read().splitlines(True)] def __call__(self, path, mode, atomictemp): return mockfile(path, self) class testsimplekeyvaluefile(unittest.TestCase): def setUp(self): self.vfs = mockvfs() def testbasicwritingiandreading(self): dw = {b'key1': b'value1', b'Key2': b'value2'} scmutil.simplekeyvaluefile(self.vfs, b'kvfile').write(dw) self.assertEqual( sorted(self.vfs.read(b'kvfile').split(b'\n')), [b'', b'Key2=value2', b'key1=value1'], ) dr = scmutil.simplekeyvaluefile(self.vfs, b'kvfile').read() self.assertEqual(dr, dw) if not getattr(unittest.TestCase, 'assertRaisesRegex', False): # Python 3.7 deprecates the regex*p* version, but 2.7 lacks # the regex version. assertRaisesRegex = ( # camelcase-required unittest.TestCase.assertRaisesRegexp ) def testinvalidkeys(self): d = {b'0key1': b'value1', b'Key2': b'value2'} with self.assertRaisesRegex( error.ProgrammingError, 'keys must start with a letter.*' ): scmutil.simplekeyvaluefile(self.vfs, b'kvfile').write(d) d = {b'key1@': b'value1', b'Key2': b'value2'} with self.assertRaisesRegex(error.ProgrammingError, 'invalid key.*'): scmutil.simplekeyvaluefile(self.vfs, b'kvfile').write(d) def testinvalidvalues(self): d = {b'key1': b'value1', b'Key2': b'value2\n'} with self.assertRaisesRegex(error.ProgrammingError, 'invalid val.*'): scmutil.simplekeyvaluefile(self.vfs, b'kvfile').write(d) def testcorruptedfile(self): self.vfs.contents[b'badfile'] = b'ababagalamaga\n' with self.assertRaisesRegex( error.CorruptedState, 'dictionary.*element.*' ): scmutil.simplekeyvaluefile(self.vfs, b'badfile').read() def testfirstline(self): dw = {b'key1': b'value1'} scmutil.simplekeyvaluefile(self.vfs, b'fl').write(dw, firstline=b'1.0') self.assertEqual(self.vfs.read(b'fl'), b'1.0\nkey1=value1\n') dr = scmutil.simplekeyvaluefile(self.vfs, b'fl').read( firstlinenonkeyval=True ) self.assertEqual(dr, {b'__firstline': b'1.0', b'key1': b'value1'}) if __name__ == "__main__": silenttestrunner.main(__name__)