tests: various Python 3 ports for test-remotefilelog-datapack.py

Use bytes I/O. Use byteschr(). Convert temporary path to bytes.

Differential Revision: https://phab.mercurial-scm.org/D5758

tests/test-remotefilelog-datapack.py

@@ -1,379 +1,380
 #!/usr/bin/env python
 from __future__ import absolute_import, print_function
 
 import hashlib
 import os
 import random
 import shutil
 import stat
 import struct
 import sys
 import tempfile
 import time
 import unittest
 
 import silenttestrunner
 
 # Load the local remotefilelog, not the system one
 sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]
 from mercurial.node import nullid
 from mercurial import (
     pycompat,
     ui as uimod,
 )
 from hgext.remotefilelog import (
     basepack,
     constants,
     datapack,
 )
 
 class datapacktestsbase(object):
     def __init__(self, datapackreader, paramsavailable):
         self.datapackreader = datapackreader
         self.paramsavailable = paramsavailable
 
     def setUp(self):
         self.tempdirs = []
 
     def tearDown(self):
         for d in self.tempdirs:
             shutil.rmtree(d)
 
     def makeTempDir(self):
-        tempdir = tempfile.mkdtemp()
+        tempdir = pycompat.bytestr(tempfile.mkdtemp())
         self.tempdirs.append(tempdir)
         return tempdir
 
     def getHash(self, content):
         return hashlib.sha1(content).digest()
 
     def getFakeHash(self):
-        return ''.join(chr(random.randint(0, 255)) for _ in range(20))
+        return b''.join(pycompat.bytechr(random.randint(0, 255))
+                        for _ in range(20))
 
     def createPack(self, revisions=None, packdir=None):
         if revisions is None:
             revisions = [(b"filename", self.getFakeHash(), nullid, b"content")]
 
         if packdir is None:
             packdir = self.makeTempDir()
 
         packer = datapack.mutabledatapack(uimod.ui(), packdir, version=2)
 
         for args in revisions:
             filename, node, base, content = args[0:4]
             # meta is optional
             meta = None
             if len(args) > 4:
                 meta = args[4]
             packer.add(filename, node, base, content, metadata=meta)
 
         path = packer.close()
         return self.datapackreader(path)
 
     def _testAddSingle(self, content):
         """Test putting a simple blob into a pack and reading it out.
         """
         filename = b"foo"
         node = self.getHash(content)
 
         revisions = [(filename, node, nullid, content)]
         pack = self.createPack(revisions)
         if self.paramsavailable:
             self.assertEqual(pack.params.fanoutprefix,
                              basepack.SMALLFANOUTPREFIX)
 
         chain = pack.getdeltachain(filename, node)
         self.assertEqual(content, chain[0][4])
 
     def testAddSingle(self):
         self._testAddSingle(b'')
 
     def testAddSingleEmpty(self):
         self._testAddSingle(b'abcdef')
 
     def testAddMultiple(self):
         """Test putting multiple unrelated blobs into a pack and reading them
         out.
         """
         revisions = []
         for i in range(10):
             filename = b"foo%d" % i
             content = b"abcdef%d" % i
             node = self.getHash(content)
             revisions.append((filename, node, self.getFakeHash(), content))
 
         pack = self.createPack(revisions)
 
         for filename, node, base, content in revisions:
             entry = pack.getdelta(filename, node)
             self.assertEqual((content, filename, base, {}), entry)
 
             chain = pack.getdeltachain(filename, node)
             self.assertEqual(content, chain[0][4])
 
     def testAddDeltas(self):
         """Test putting multiple delta blobs into a pack and read the chain.
         """
         revisions = []
         filename = b"foo"
         lastnode = nullid
         for i in range(10):
             content = b"abcdef%d" % i
             node = self.getHash(content)
             revisions.append((filename, node, lastnode, content))
             lastnode = node
 
         pack = self.createPack(revisions)
 
         entry = pack.getdelta(filename, revisions[0][1])
         realvalue = (revisions[0][3], filename, revisions[0][2], {})
         self.assertEqual(entry, realvalue)
 
         # Test that the chain for the final entry has all the others
         chain = pack.getdeltachain(filename, node)
         for i in range(10):
             content = b"abcdef%d" % i
             self.assertEqual(content, chain[-i - 1][4])
 
     def testPackMany(self):
         """Pack many related and unrelated objects.
         """
         # Build a random pack file
         revisions = []
         blobs = {}
         random.seed(0)
         for i in range(100):
             filename = b"filename-%d" % i
             filerevs = []
             for j in range(random.randint(1, 100)):
                 content = b"content-%d" % j
                 node = self.getHash(content)
                 lastnode = nullid
                 if len(filerevs) > 0:
                     lastnode = filerevs[random.randint(0, len(filerevs) - 1)]
                 filerevs.append(node)
                 blobs[(filename, node, lastnode)] = content
                 revisions.append((filename, node, lastnode, content))
 
         pack = self.createPack(revisions)
 
         # Verify the pack contents
         for (filename, node, lastnode), content in sorted(blobs.items()):
             chain = pack.getdeltachain(filename, node)
             for entry in chain:
                 expectedcontent = blobs[(entry[0], entry[1], entry[3])]
                 self.assertEqual(entry[4], expectedcontent)
 
     def testPackMetadata(self):
         revisions = []
         for i in range(100):
             filename = b'%d.txt' % i
             content = b'put-something-here \n' * i
             node = self.getHash(content)
             meta = {constants.METAKEYFLAG: i ** 4,
                     constants.METAKEYSIZE: len(content),
                     b'Z': b'random_string',
                     b'_': b'\0' * i}
             revisions.append((filename, node, nullid, content, meta))
         pack = self.createPack(revisions)
         for name, node, x, content, origmeta in revisions:
             parsedmeta = pack.getmeta(name, node)
             # flag == 0 should be optimized out
             if origmeta[constants.METAKEYFLAG] == 0:
                 del origmeta[constants.METAKEYFLAG]
             self.assertEqual(parsedmeta, origmeta)
 
     def testGetMissing(self):
         """Test the getmissing() api.
         """
         revisions = []
         filename = b"foo"
         lastnode = nullid
         for i in range(10):
             content = b"abcdef%d" % i
             node = self.getHash(content)
             revisions.append((filename, node, lastnode, content))
             lastnode = node
 
         pack = self.createPack(revisions)
 
         missing = pack.getmissing([(b"foo", revisions[0][1])])
         self.assertFalse(missing)
 
         missing = pack.getmissing([(b"foo", revisions[0][1]),
                                    (b"foo", revisions[1][1])])
         self.assertFalse(missing)
 
         fakenode = self.getFakeHash()
         missing = pack.getmissing([(b"foo", revisions[0][1]),
                                    (b"foo", fakenode)])
         self.assertEqual(missing, [(b"foo", fakenode)])
 
     def testAddThrows(self):
         pack = self.createPack()
 
         try:
             pack.add(b'filename', nullid, b'contents')
             self.assertTrue(False, "datapack.add should throw")
         except RuntimeError:
             pass
 
     def testBadVersionThrows(self):
         pack = self.createPack()
         path = pack.path + b'.datapack'
-        with open(path) as f:
+        with open(path, 'rb') as f:
             raw = f.read()
         raw = struct.pack('!B', 255) + raw[1:]
         os.chmod(path, os.stat(path).st_mode | stat.S_IWRITE)
-        with open(path, 'w+') as f:
+        with open(path, 'wb+') as f:
             f.write(raw)
 
         try:
             pack = self.datapackreader(pack.path)
             self.assertTrue(False, "bad version number should have thrown")
         except RuntimeError:
             pass
 
     def testMissingDeltabase(self):
         fakenode = self.getFakeHash()
         revisions = [(b"filename", fakenode, self.getFakeHash(), b"content")]
         pack = self.createPack(revisions)
         chain = pack.getdeltachain(b"filename", fakenode)
         self.assertEqual(len(chain), 1)
 
     def testLargePack(self):
         """Test creating and reading from a large pack with over X entries.
         This causes it to use a 2^16 fanout table instead."""
         revisions = []
         blobs = {}
         total = basepack.SMALLFANOUTCUTOFF + 1
         for i in pycompat.xrange(total):
             filename = b"filename-%d" % i
             content = filename
             node = self.getHash(content)
             blobs[(filename, node)] = content
             revisions.append((filename, node, nullid, content))
 
         pack = self.createPack(revisions)
         if self.paramsavailable:
             self.assertEqual(pack.params.fanoutprefix,
                              basepack.LARGEFANOUTPREFIX)
 
         for (filename, node), content in blobs.items():
             actualcontent = pack.getdeltachain(filename, node)[0][4]
             self.assertEqual(actualcontent, content)
 
     def testPacksCache(self):
         """Test that we remember the most recent packs while fetching the delta
         chain."""
 
         packdir = self.makeTempDir()
         deltachains = []
 
         numpacks = 10
         revisionsperpack = 100
 
         for i in range(numpacks):
             chain = []
             revision = (b'%d' % i, self.getFakeHash(), nullid, b"content")
 
             for _ in range(revisionsperpack):
                 chain.append(revision)
                 revision = (
                     b'%d' % i,
                     self.getFakeHash(),
                     revision[1],
                     self.getFakeHash()
                 )
 
             self.createPack(chain, packdir)
             deltachains.append(chain)
 
         class testdatapackstore(datapack.datapackstore):
             # Ensures that we are not keeping everything in the cache.
             DEFAULTCACHESIZE = numpacks / 2
 
         store = testdatapackstore(uimod.ui(), packdir)
 
         random.shuffle(deltachains)
         for randomchain in deltachains:
             revision = random.choice(randomchain)
             chain = store.getdeltachain(revision[0], revision[1])
 
             mostrecentpack = next(iter(store.packs), None)
             self.assertEqual(
                 mostrecentpack.getdeltachain(revision[0], revision[1]),
                 chain
             )
 
             self.assertEqual(randomchain.index(revision) + 1, len(chain))
 
     # perf test off by default since it's slow
     def _testIndexPerf(self):
         random.seed(0)
         print("Multi-get perf test")
         packsizes = [
             100,
             10000,
             100000,
             500000,
             1000000,
             3000000,
         ]
         lookupsizes = [
             10,
             100,
             1000,
             10000,
             100000,
             1000000,
         ]
         for packsize in packsizes:
             revisions = []
             for i in pycompat.xrange(packsize):
                 filename = b"filename-%d" % i
                 content = b"content-%d" % i
                 node = self.getHash(content)
                 revisions.append((filename, node, nullid, content))
 
             path = self.createPack(revisions).path
 
             # Perf of large multi-get
             import gc
             gc.disable()
             pack = self.datapackreader(path)
             for lookupsize in lookupsizes:
                 if lookupsize > packsize:
                     continue
                 random.shuffle(revisions)
                 findnodes = [(rev[0], rev[1]) for rev in revisions]
 
                 start = time.time()
                 pack.getmissing(findnodes[:lookupsize])
                 elapsed = time.time() - start
                 print ("%s pack %d lookups = %0.04f" %
                        (('%d' % packsize).rjust(7),
                         ('%d' % lookupsize).rjust(7),
                         elapsed))
 
             print("")
             gc.enable()
 
         # The perf test is meant to produce output, so we always fail the test
         # so the user sees the output.
         raise RuntimeError("perf test always fails")
 
 class datapacktests(datapacktestsbase, unittest.TestCase):
     def __init__(self, *args, **kwargs):
         datapacktestsbase.__init__(self, datapack.datapack, True)
         unittest.TestCase.__init__(self, *args, **kwargs)
 
 # TODO:
 # datapack store:
 # - getmissing
 # - GC two packs into one
 
 if __name__ == '__main__':
     if pycompat.iswindows:
         sys.exit(80)    # Skip on Windows
     silenttestrunner.main(__name__)