record: move scanpatch from record to patch
Part of a series of patches to move record from hgext to core
import binascii
import unittest
import itertools
import silenttestrunner
from mercurial import manifest as manifestmod
HASH_1 = '1' * 40
HASH_2 = 'f' * 40
HASH_3 = '1234567890abcdef0987654321deadbeef0fcafe'
A_SHORT_MANIFEST = (
'bar/baz/qux.py\0%(hash2)s%(flag2)s\n'
'foo\0%(hash1)s%(flag1)s\n'
) % {'hash1': HASH_1,
'flag1': '',
'hash2': HASH_2,
'flag2': 'l',
}
HUGE_MANIFEST_ENTRIES = 200001
A_HUGE_MANIFEST = ''.join(sorted(
'file%d\0%s%s\n' % (i, h, f) for i, h, f in
itertools.izip(xrange(200001),
itertools.cycle((HASH_1, HASH_2)),
itertools.cycle(('', 'x', 'l')))))
class testmanifest(unittest.TestCase):
def assertIn(self, thing, container, msg=None):
# assertIn new in 2.7, use it if available, otherwise polyfill
sup = getattr(unittest.TestCase, 'assertIn', False)
if sup:
return sup(self, thing, container, msg=msg)
if not msg:
msg = 'Expected %r in %r' % (thing, container)
self.assert_(thing in container, msg)
def testEmptyManifest(self):
m = manifestmod._lazymanifest('')
self.assertEqual(0, len(m))
self.assertEqual([], list(m))
def testManifest(self):
m = manifestmod._lazymanifest(A_SHORT_MANIFEST)
want = [
('bar/baz/qux.py', binascii.unhexlify(HASH_2), 'l'),
('foo', binascii.unhexlify(HASH_1), ''),
]
self.assertEqual(len(want), len(m))
self.assertEqual(want, list(m))
self.assertEqual((binascii.unhexlify(HASH_1), ''), m['foo'])
self.assertRaises(KeyError, lambda : m['wat'])
self.assertEqual((binascii.unhexlify(HASH_2), 'l'),
m['bar/baz/qux.py'])
def testSetItem(self):
want = binascii.unhexlify(HASH_1), ''
m = manifestmod._lazymanifest('')
m['a'] = want
self.assertIn('a', m)
self.assertEqual(want, m['a'])
self.assertEqual('a\0' + HASH_1 + '\n', m.text())
m = manifestmod._lazymanifest(A_SHORT_MANIFEST)
m['a'] = want
self.assertEqual(want, m['a'])
self.assertEqual('a\0' + HASH_1 + '\n' + A_SHORT_MANIFEST,
m.text())
m2 = m.copy()
del m
del m2 # make sure we don't double free() anything
def testCompaction(self):
unhex = binascii.unhexlify
h1, h2 = unhex(HASH_1), unhex(HASH_2)
m = manifestmod._lazymanifest(A_SHORT_MANIFEST)
m['alpha'] = h1, ''
m['beta'] = h2, ''
del m['foo']
want = 'alpha\0%s\nbar/baz/qux.py\0%sl\nbeta\0%s\n' % (
HASH_1, HASH_2, HASH_2)
self.assertEqual(want, m.text())
self.assertEqual(3, len(m))
self.assertEqual((h1, ''), m['alpha'])
self.assertEqual((h2, ''), m['beta'])
self.assertRaises(KeyError, lambda : m['foo'])
w = [('alpha', h1, ''), ('bar/baz/qux.py', h2, 'l'), ('beta', h2, '')]
self.assertEqual(w, list(m))
def testSetGetNodeSuffix(self):
clean = manifestmod._lazymanifest(A_SHORT_MANIFEST)
m = manifestmod._lazymanifest(A_SHORT_MANIFEST)
h, f = m['foo']
want = h + 'a', f
# Merge code wants to set 21-byte fake hashes at times
m['foo'] = want
self.assertEqual(want, m['foo'])
self.assertEqual([('bar/baz/qux.py', binascii.unhexlify(HASH_2), 'l'),
('foo', binascii.unhexlify(HASH_1) + 'a', '')],
list(m))
# Sometimes it even tries a 22-byte fake hash, but we can
# return 21 and it'll work out
m['foo'] = want[0] + '+', f
self.assertEqual(want, m['foo'])
# make sure the suffix survives a copy
m2 = m.filtercopy(lambda x: x == 'foo')
self.assertEqual(want, m2['foo'])
self.assertEqual(1, len(m2))
self.assertEqual(('foo\0%s\n' % HASH_1), m2.text())
m2 = m.copy()
self.assertEqual(want, m2['foo'])
# suffix with iteration
self.assertEqual([('bar/baz/qux.py', binascii.unhexlify(HASH_2), 'l'),
('foo', want[0], '')], list(m))
# shows up in diff
self.assertEqual({'foo': (want, (h, ''))}, m.diff(clean))
self.assertEqual({'foo': ((h, ''), want)}, clean.diff(m))
def testFilterCopyException(self):
m = manifestmod._lazymanifest(A_SHORT_MANIFEST)
def filt(path):
if path == 'foo':
assert False
return True
self.assertRaises(AssertionError, m.filtercopy, filt)
def testRemoveItem(self):
m = manifestmod._lazymanifest(A_SHORT_MANIFEST)
del m['foo']
self.assertRaises(KeyError, lambda : m['foo'])
self.assertEqual(1, len(m))
self.assertEqual(1, len(list(m)))
# now restore and make sure everything works right
m['foo'] = 'a' * 20, ''
self.assertEqual(2, len(m))
self.assertEqual(2, len(list(m)))
def testManifestDiff(self):
MISSING = (None, '')
addl = 'z-only-in-left\0' + HASH_1 + '\n'
addr = 'z-only-in-right\0' + HASH_2 + 'x\n'
left = manifestmod._lazymanifest(
A_SHORT_MANIFEST.replace(HASH_1, HASH_3 + 'x') + addl)
right = manifestmod._lazymanifest(A_SHORT_MANIFEST + addr)
want = {
'foo': ((binascii.unhexlify(HASH_3), 'x'),
(binascii.unhexlify(HASH_1), '')),
'z-only-in-left': ((binascii.unhexlify(HASH_1), ''), MISSING),
'z-only-in-right': (MISSING, (binascii.unhexlify(HASH_2), 'x')),
}
self.assertEqual(want, left.diff(right))
want = {
'bar/baz/qux.py': (MISSING, (binascii.unhexlify(HASH_2), 'l')),
'foo': (MISSING, (binascii.unhexlify(HASH_3), 'x')),
'z-only-in-left': (MISSING, (binascii.unhexlify(HASH_1), '')),
}
self.assertEqual(want, manifestmod._lazymanifest('').diff(left))
want = {
'bar/baz/qux.py': ((binascii.unhexlify(HASH_2), 'l'), MISSING),
'foo': ((binascii.unhexlify(HASH_3), 'x'), MISSING),
'z-only-in-left': ((binascii.unhexlify(HASH_1), ''), MISSING),
}
self.assertEqual(want, left.diff(manifestmod._lazymanifest('')))
copy = right.copy()
del copy['z-only-in-right']
del right['foo']
want = {
'foo': (MISSING, (binascii.unhexlify(HASH_1), '')),
'z-only-in-right': ((binascii.unhexlify(HASH_2), 'x'), MISSING),
}
self.assertEqual(want, right.diff(copy))
short = manifestmod._lazymanifest(A_SHORT_MANIFEST)
pruned = short.copy()
del pruned['foo']
want = {
'foo': ((binascii.unhexlify(HASH_1), ''), MISSING),
}
self.assertEqual(want, short.diff(pruned))
want = {
'foo': (MISSING, (binascii.unhexlify(HASH_1), '')),
}
self.assertEqual(want, pruned.diff(short))
want = {
'bar/baz/qux.py': None,
'foo': (MISSING, (binascii.unhexlify(HASH_1), '')),
}
self.assertEqual(want, pruned.diff(short, True))
def testReversedLines(self):
backwards = ''.join(
l + '\n' for l in reversed(A_SHORT_MANIFEST.split('\n')) if l)
try:
manifestmod._lazymanifest(backwards)
self.fail('Should have raised ValueError')
except ValueError, v:
self.assertIn('Manifest lines not in sorted order.', str(v))
def testNoTerminalNewline(self):
try:
manifestmod._lazymanifest(A_SHORT_MANIFEST + 'wat')
self.fail('Should have raised ValueError')
except ValueError, v:
self.assertIn('Manifest did not end in a newline.', str(v))
def testNoNewLineAtAll(self):
try:
manifestmod._lazymanifest('wat')
self.fail('Should have raised ValueError')
except ValueError, v:
self.assertIn('Manifest did not end in a newline.', str(v))
def testHugeManifest(self):
m = manifestmod._lazymanifest(A_HUGE_MANIFEST)
self.assertEqual(HUGE_MANIFEST_ENTRIES, len(m))
self.assertEqual(len(m), len(list(m)))
def testIntersectFiles(self):
m = manifestmod.manifestdict(A_HUGE_MANIFEST)
m2 = m.intersectfiles(['file1', 'file200', 'file300'])
w = ('file1\0%sx\n'
'file200\0%sl\n'
'file300\0%s\n') % (HASH_2, HASH_1, HASH_1)
self.assertEqual(w, m2.text())
if __name__ == '__main__':
silenttestrunner.main(__name__)