tests/test-remotefilelog-histpack.py
author Boris Feld <boris.feld@octobus.net>
Mon, 15 Oct 2018 15:45:08 +0200
changeset 40603 2f7e531ef3e7
parent 40506 10c10da14c5d
child 40733 9446d5aa0f32
permissions -rwxr-xr-x
sparse-revlog: skip the span check in the sparse-revlog case This significantly improves the performance on unbundling on smaller repositories. Mercurial: unbundling 1K revisions no-sparse-revlog: 500 ms sparse-revlog-before: 689 ms sparse-revlog-after: 484 ms Pypy: unbundling 1K revisions no-sparse-revlog: 1.242 s sparse-revlog-before: 1.135 s sparse-revlog-after: 0.860 s NetBeans: unbundling 1K revisions no-sparse-revlog: 1.386 s sparse-revlog-before: 2.368 s sparse-revlog-after: 1.191 s Mozilla: unbundling 1K revisions no-sparse-revlog: 3.103 s sparse-revlog-before: 3.367 s sparse-revlog-after: 3.093 s
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#!/usr/bin/env python
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from __future__ import absolute_import
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import hashlib
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import os
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import random
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import shutil
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import stat
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import struct
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import sys
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import tempfile
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import unittest
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import silenttestrunner
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from mercurial.node import nullid
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from mercurial import (
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    ui as uimod,
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)
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# Load the local remotefilelog, not the system one
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sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]
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from hgext.remotefilelog import (
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    basepack,
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    historypack,
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)
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class histpacktests(unittest.TestCase):
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    def setUp(self):
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        self.tempdirs = []
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    def tearDown(self):
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        for d in self.tempdirs:
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            shutil.rmtree(d)
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    def makeTempDir(self):
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        tempdir = tempfile.mkdtemp()
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        self.tempdirs.append(tempdir)
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        return tempdir
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    def getHash(self, content):
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        return hashlib.sha1(content).digest()
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    def getFakeHash(self):
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        return ''.join(chr(random.randint(0, 255)) for _ in range(20))
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    def createPack(self, revisions=None):
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        """Creates and returns a historypack containing the specified revisions.
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        `revisions` is a list of tuples, where each tuple contains a filanem,
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        node, p1node, p2node, and linknode.
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        """
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        if revisions is None:
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            revisions = [("filename", self.getFakeHash(), nullid, nullid,
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                          self.getFakeHash(), None)]
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        packdir = self.makeTempDir()
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        packer = historypack.mutablehistorypack(uimod.ui(), packdir,
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                                                version=2)
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        for filename, node, p1, p2, linknode, copyfrom in revisions:
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            packer.add(filename, node, p1, p2, linknode, copyfrom)
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        path = packer.close()
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        return historypack.historypack(path)
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    def testAddSingle(self):
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        """Test putting a single entry into a pack and reading it out.
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        """
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        filename = "foo"
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        node = self.getFakeHash()
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        p1 = self.getFakeHash()
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        p2 = self.getFakeHash()
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        linknode = self.getFakeHash()
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        revisions = [(filename, node, p1, p2, linknode, None)]
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        pack = self.createPack(revisions)
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        actual = pack.getancestors(filename, node)[node]
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        self.assertEquals(p1, actual[0])
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        self.assertEquals(p2, actual[1])
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        self.assertEquals(linknode, actual[2])
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    def testAddMultiple(self):
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        """Test putting multiple unrelated revisions into a pack and reading
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        them out.
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        """
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        revisions = []
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        for i in range(10):
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            filename = "foo-%s" % i
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            node = self.getFakeHash()
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            p1 = self.getFakeHash()
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            p2 = self.getFakeHash()
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            linknode = self.getFakeHash()
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            revisions.append((filename, node, p1, p2, linknode, None))
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        pack = self.createPack(revisions)
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        for filename, node, p1, p2, linknode, copyfrom in revisions:
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            actual = pack.getancestors(filename, node)[node]
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            self.assertEquals(p1, actual[0])
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            self.assertEquals(p2, actual[1])
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            self.assertEquals(linknode, actual[2])
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            self.assertEquals(copyfrom, actual[3])
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    def testAddAncestorChain(self):
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        """Test putting multiple revisions in into a pack and read the ancestor
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        chain.
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        """
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        revisions = []
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        filename = "foo"
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        lastnode = nullid
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        for i in range(10):
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            node = self.getFakeHash()
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            revisions.append((filename, node, lastnode, nullid, nullid, None))
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            lastnode = node
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        # revisions must be added in topological order, newest first
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        revisions = list(reversed(revisions))
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        pack = self.createPack(revisions)
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   120
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        # Test that the chain has all the entries
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        ancestors = pack.getancestors(revisions[0][0], revisions[0][1])
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        for filename, node, p1, p2, linknode, copyfrom in revisions:
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            ap1, ap2, alinknode, acopyfrom = ancestors[node]
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            self.assertEquals(ap1, p1)
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            self.assertEquals(ap2, p2)
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            self.assertEquals(alinknode, linknode)
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            self.assertEquals(acopyfrom, copyfrom)
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    def testPackMany(self):
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        """Pack many related and unrelated ancestors.
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        """
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        # Build a random pack file
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        allentries = {}
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        ancestorcounts = {}
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        revisions = []
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        random.seed(0)
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        for i in range(100):
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            filename = "filename-%s" % i
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            entries = []
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            p2 = nullid
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            linknode = nullid
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            for j in range(random.randint(1, 100)):
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                node = self.getFakeHash()
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                p1 = nullid
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                if len(entries) > 0:
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                    p1 = entries[random.randint(0, len(entries) - 1)]
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                entries.append(node)
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                revisions.append((filename, node, p1, p2, linknode, None))
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                allentries[(filename, node)] = (p1, p2, linknode)
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                if p1 == nullid:
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                    ancestorcounts[(filename, node)] = 1
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                else:
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                    newcount = ancestorcounts[(filename, p1)] + 1
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                    ancestorcounts[(filename, node)] = newcount
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        # Must add file entries in reverse topological order
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        revisions = list(reversed(revisions))
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        pack = self.createPack(revisions)
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        # Verify the pack contents
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        for (filename, node), (p1, p2, lastnode) in allentries.iteritems():
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            ancestors = pack.getancestors(filename, node)
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            self.assertEquals(ancestorcounts[(filename, node)],
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                              len(ancestors))
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            for anode, (ap1, ap2, alinknode, copyfrom) in ancestors.iteritems():
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                ep1, ep2, elinknode = allentries[(filename, anode)]
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                self.assertEquals(ap1, ep1)
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                self.assertEquals(ap2, ep2)
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                self.assertEquals(alinknode, elinknode)
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                self.assertEquals(copyfrom, None)
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    def testGetNodeInfo(self):
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        revisions = []
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        filename = "foo"
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        lastnode = nullid
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        for i in range(10):
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            node = self.getFakeHash()
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            revisions.append((filename, node, lastnode, nullid, nullid, None))
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            lastnode = node
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   181
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        pack = self.createPack(revisions)
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        # Test that getnodeinfo returns the expected results
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   185
        for filename, node, p1, p2, linknode, copyfrom in revisions:
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   186
            ap1, ap2, alinknode, acopyfrom = pack.getnodeinfo(filename, node)
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   187
            self.assertEquals(ap1, p1)
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   188
            self.assertEquals(ap2, p2)
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   189
            self.assertEquals(alinknode, linknode)
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   190
            self.assertEquals(acopyfrom, copyfrom)
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   191
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    def testGetMissing(self):
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        """Test the getmissing() api.
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   194
        """
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   195
        revisions = []
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   196
        filename = "foo"
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   197
        for i in range(10):
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   198
            node = self.getFakeHash()
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   199
            p1 = self.getFakeHash()
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   200
            p2 = self.getFakeHash()
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   201
            linknode = self.getFakeHash()
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            revisions.append((filename, node, p1, p2, linknode, None))
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   203
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        pack = self.createPack(revisions)
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   205
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        missing = pack.getmissing([(filename, revisions[0][1])])
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        self.assertFalse(missing)
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   208
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   209
        missing = pack.getmissing([(filename, revisions[0][1]),
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                                   (filename, revisions[1][1])])
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   211
        self.assertFalse(missing)
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   212
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   213
        fakenode = self.getFakeHash()
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   214
        missing = pack.getmissing([(filename, revisions[0][1]),
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   215
                                   (filename, fakenode)])
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   216
        self.assertEquals(missing, [(filename, fakenode)])
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   217
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   218
        # Test getmissing on a non-existant filename
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   219
        missing = pack.getmissing([("bar", fakenode)])
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   220
        self.assertEquals(missing, [("bar", fakenode)])
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   221
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   222
    def testAddThrows(self):
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diff changeset
   223
        pack = self.createPack()
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   224
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   225
        try:
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   226
            pack.add('filename', nullid, nullid, nullid, nullid, None)
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   227
            self.assertTrue(False, "historypack.add should throw")
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   228
        except RuntimeError:
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   229
            pass
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    def testBadVersionThrows(self):
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        pack = self.createPack()
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        path = pack.path + '.histpack'
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        with open(path) as f:
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            raw = f.read()
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        raw = struct.pack('!B', 255) + raw[1:]
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        os.chmod(path, os.stat(path).st_mode | stat.S_IWRITE)
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        with open(path, 'w+') as f:
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            f.write(raw)
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        try:
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            pack = historypack.historypack(pack.path)
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            self.assertTrue(False, "bad version number should have thrown")
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        except RuntimeError:
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            pass
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    def testLargePack(self):
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        """Test creating and reading from a large pack with over X entries.
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        This causes it to use a 2^16 fanout table instead."""
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        total = basepack.SMALLFANOUTCUTOFF + 1
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        revisions = []
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        for i in xrange(total):
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            filename = "foo-%s" % i
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            node = self.getFakeHash()
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            p1 = self.getFakeHash()
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            p2 = self.getFakeHash()
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            linknode = self.getFakeHash()
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            revisions.append((filename, node, p1, p2, linknode, None))
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        pack = self.createPack(revisions)
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        self.assertEquals(pack.params.fanoutprefix, basepack.LARGEFANOUTPREFIX)
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        for filename, node, p1, p2, linknode, copyfrom in revisions:
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            actual = pack.getancestors(filename, node)[node]
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            self.assertEquals(p1, actual[0])
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            self.assertEquals(p2, actual[1])
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            self.assertEquals(linknode, actual[2])
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            self.assertEquals(copyfrom, actual[3])
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# TODO:
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# histpack store:
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# - repack two packs into one
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if __name__ == '__main__':
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    silenttestrunner.main(__name__)