rust-index: using `hg::index::Index` in `hg-cpython::dagops`
Hooking `headrevs` to the Rust index is straightforward as long as
we go the `PySharedRef` way. Direct attempts of obtaining a reference
to the inner `hg::index::Index` fail for lifetime reasons: the reference
is bound to the GIL, yet the `as_set` local variable is considered to
be static (the borrow checker clearly does not realize or care that this
set only stores `Revision` values).
In `rank()`, the chosen solution is the simplest as far as `hg-cpython` is
concerned, but it has the defect of removing an implementation
that would be easily adaptable if the core index did implement `RankedGraph`
(returning the same error as long as only `REVLOGV1` is supported), but that
would introduce a direct dependency of `hg-core` on the ``vcsgraph` crate.
# Tests to ensure that sha1dc.sha1 is exactly a drop-in for
# hashlib.sha1 for our needs.
import hashlib
import unittest
import silenttestrunner
try:
from mercurial.thirdparty import sha1dc
except ImportError:
sha1dc = None
class hashertestsbase:
def test_basic_hash(self):
h = self.hasher()
h.update(b'foo')
self.assertEqual(
'0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', h.hexdigest()
)
h.update(b'bar')
self.assertEqual(
'8843d7f92416211de9ebb963ff4ce28125932878', h.hexdigest()
)
def test_copy_hasher(self):
h = self.hasher()
h.update(b'foo')
h2 = h.copy()
h.update(b'baz')
h2.update(b'bar')
self.assertEqual(
'21eb6533733a5e4763acacd1d45a60c2e0e404e1', h.hexdigest()
)
self.assertEqual(
'8843d7f92416211de9ebb963ff4ce28125932878', h2.hexdigest()
)
def test_init_hasher(self):
h = self.hasher(b'initial string')
self.assertEqual(
b'\xc9y|n\x1f3S\xa4:\xbaJ\xca,\xc1\x1a\x9e\xb8\xd8\xdd\x86',
h.digest(),
)
def test_bytes_like_types(self):
h = self.hasher()
h.update(bytearray(b'foo'))
h.update(memoryview(b'baz'))
self.assertEqual(
'21eb6533733a5e4763acacd1d45a60c2e0e404e1', h.hexdigest()
)
h = self.hasher(bytearray(b'foo'))
h.update(b'baz')
self.assertEqual(
'21eb6533733a5e4763acacd1d45a60c2e0e404e1', h.hexdigest()
)
h = self.hasher(memoryview(b'foo'))
h.update(b'baz')
self.assertEqual(
'21eb6533733a5e4763acacd1d45a60c2e0e404e1', h.hexdigest()
)
class hashlibtests(unittest.TestCase, hashertestsbase):
hasher = hashlib.sha1
if sha1dc:
class sha1dctests(unittest.TestCase, hashertestsbase):
hasher = sha1dc.sha1
if __name__ == '__main__':
silenttestrunner.main(__name__)