resourceutil: account for the non-resource-like file hierarchy under py2exe
After 9e367157a990, config files for py2exe were expected to be in
C:\Program Files\Mercurial\mercurial\defaultrc because of the implied resource
structure of 'mercurial.defaultrc.*.rc', relative to the executable.
Accomodating this would require changes to the WIX and Inno scripts (and perhaps
the script that generates the WIX script), as well as 3rd party bundlers like
TortoiseHg. But these files aren't read as resources anyway- they fall back to
the filesystem APIs. (If we really wanted to carry on the charade, the
installer would have to also sprinkle various empty __init__.py files around.)
Instead, this simply prunes the 'mercurial.' portion of the resource name when
run with py2exe. (PyOxidizer uses the resources API, not the filesystem
fallback, so it is unaffected.) Since this hack only affects the py2 Windows
installers and is less risky, I think it's reasonable. We haven't needed to
load any 3rd party resource up to this point, and would have to make packaging
changes anyway to handle that.
Differential Revision: https://phab.mercurial-scm.org/D8058
from __future__ import absolute_import
import sys
import unittest
from mercurial import (
error,
node,
)
from mercurial.testing import revlog as revlogtesting
try:
from mercurial import rustext
rustext.__name__ # trigger immediate actual import
except ImportError:
rustext = None
else:
# this would fail already without appropriate ancestor.__package__
from mercurial.rustext.ancestor import (
AncestorsIterator,
LazyAncestors,
MissingAncestors,
)
from mercurial.rustext import dagop
try:
from mercurial.cext import parsers as cparsers
except ImportError:
cparsers = None
@unittest.skipIf(
rustext is None,
'The Rust version of the "ancestor" module is not available. It is needed'
' for this test.',
)
@unittest.skipIf(
rustext is None,
'The Rust or C version of the "parsers" module, which the "ancestor" module'
' relies on, is not available.',
)
class rustancestorstest(revlogtesting.RevlogBasedTestBase):
"""Test the correctness of binding to Rust code.
This test is merely for the binding to Rust itself: extraction of
Python variable, giving back the results etc.
It is not meant to test the algorithmic correctness of the operations
on ancestors it provides. Hence the very simple embedded index data is
good enough.
Algorithmic correctness is asserted by the Rust unit tests.
"""
def testiteratorrevlist(self):
idx = self.parseindex()
# checking test assumption about the index binary data:
self.assertEqual(
{i: (r[5], r[6]) for i, r in enumerate(idx)},
{0: (-1, -1), 1: (0, -1), 2: (1, -1), 3: (2, -1)},
)
ait = AncestorsIterator(idx, [3], 0, True)
self.assertEqual([r for r in ait], [3, 2, 1, 0])
ait = AncestorsIterator(idx, [3], 0, False)
self.assertEqual([r for r in ait], [2, 1, 0])
def testlazyancestors(self):
idx = self.parseindex()
start_count = sys.getrefcount(idx) # should be 2 (see Python doc)
self.assertEqual(
{i: (r[5], r[6]) for i, r in enumerate(idx)},
{0: (-1, -1), 1: (0, -1), 2: (1, -1), 3: (2, -1)},
)
lazy = LazyAncestors(idx, [3], 0, True)
# we have two more references to the index:
# - in its inner iterator for __contains__ and __bool__
# - in the LazyAncestors instance itself (to spawn new iterators)
self.assertEqual(sys.getrefcount(idx), start_count + 2)
self.assertTrue(2 in lazy)
self.assertTrue(bool(lazy))
self.assertEqual(list(lazy), [3, 2, 1, 0])
# a second time to validate that we spawn new iterators
self.assertEqual(list(lazy), [3, 2, 1, 0])
# now let's watch the refcounts closer
ait = iter(lazy)
self.assertEqual(sys.getrefcount(idx), start_count + 3)
del ait
self.assertEqual(sys.getrefcount(idx), start_count + 2)
del lazy
self.assertEqual(sys.getrefcount(idx), start_count)
# let's check bool for an empty one
self.assertFalse(LazyAncestors(idx, [0], 0, False))
def testmissingancestors(self):
idx = self.parseindex()
missanc = MissingAncestors(idx, [1])
self.assertTrue(missanc.hasbases())
self.assertEqual(missanc.missingancestors([3]), [2, 3])
missanc.addbases({2})
self.assertEqual(missanc.bases(), {1, 2})
self.assertEqual(missanc.missingancestors([3]), [3])
self.assertEqual(missanc.basesheads(), {2})
def testmissingancestorsremove(self):
idx = self.parseindex()
missanc = MissingAncestors(idx, [1])
revs = {0, 1, 2, 3}
missanc.removeancestorsfrom(revs)
self.assertEqual(revs, {2, 3})
def testrefcount(self):
idx = self.parseindex()
start_count = sys.getrefcount(idx)
# refcount increases upon iterator init...
ait = AncestorsIterator(idx, [3], 0, True)
self.assertEqual(sys.getrefcount(idx), start_count + 1)
self.assertEqual(next(ait), 3)
# and decreases once the iterator is removed
del ait
self.assertEqual(sys.getrefcount(idx), start_count)
# and removing ref to the index after iterator init is no issue
ait = AncestorsIterator(idx, [3], 0, True)
del idx
self.assertEqual(list(ait), [3, 2, 1, 0])
def testgrapherror(self):
data = (
revlogtesting.data_non_inlined[: 64 + 27]
+ b'\xf2'
+ revlogtesting.data_non_inlined[64 + 28 :]
)
idx = cparsers.parse_index2(data, False)[0]
with self.assertRaises(rustext.GraphError) as arc:
AncestorsIterator(idx, [1], -1, False)
exc = arc.exception
self.assertIsInstance(exc, ValueError)
# rust-cpython issues appropriate str instances for Python 2 and 3
self.assertEqual(exc.args, ('ParentOutOfRange', 1))
def testwdirunsupported(self):
# trying to access ancestors of the working directory raises
# WdirUnsupported directly
idx = self.parseindex()
with self.assertRaises(error.WdirUnsupported):
list(AncestorsIterator(idx, [node.wdirrev], -1, False))
def testheadrevs(self):
idx = self.parseindex()
self.assertEqual(dagop.headrevs(idx, [1, 2, 3]), {3})
if __name__ == '__main__':
import silenttestrunner
silenttestrunner.main(__name__)