view tests/test-hashutil.py @ 46113:59fa3890d40a

node: import symbols explicitly

There is no point in lazy importing mercurial.node, it is used all over
the place anyway. So consistently import the used symbols directly.
Fix one file using symbols indirectly via mercurial.revlog.

Differential Revision: https://phab.mercurial-scm.org/D9480

# Tests to ensure that sha1dc.sha1 is exactly a drop-in for
# hashlib.sha1 for our needs.
from __future__ import absolute_import

import hashlib
import unittest

import silenttestrunner

try:
    from mercurial.thirdparty import sha1dc
except ImportError:
    sha1dc = None


class hashertestsbase(object):
    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__)