Mercurial > hg
annotate tests/test-remotefilelog-datapack.py @ 47012:d55b71393907
node: replace nullid and friends with nodeconstants class
The introduction of 256bit hashes require changes to nullid and other
constant magic values. Start pushing them down from repository and
revlog where sensible.
Differential Revision: https://phab.mercurial-scm.org/D9465
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Mon, 29 Mar 2021 01:52:06 +0200 |
parents | 89a2afe31e82 |
children | 23f5ed6dbcb1 |
rev | line source |
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1 #!/usr/bin/env python3 |
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2 from __future__ import absolute_import, print_function |
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3 |
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4 import hashlib |
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5 import os |
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6 import random |
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7 import shutil |
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8 import stat |
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9 import struct |
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10 import sys |
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11 import tempfile |
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12 import time |
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13 import unittest |
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14 |
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15 import silenttestrunner |
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16 |
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17 # Load the local remotefilelog, not the system one |
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18 sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')] |
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19 from mercurial.node import sha1nodeconstants |
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20 from mercurial import policy |
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21 |
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22 if not policy._packageprefs.get(policy.policy, (False, False))[1]: |
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23 if __name__ == '__main__': |
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24 msg = "skipped: pure module not available with module policy:" |
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25 print(msg, policy.policy, file=sys.stderr) |
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26 sys.exit(80) |
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27 |
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28 from mercurial import ( |
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29 pycompat, |
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30 ui as uimod, |
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31 ) |
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32 from hgext.remotefilelog import ( |
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33 basepack, |
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34 constants, |
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35 datapack, |
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36 ) |
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37 |
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38 |
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39 class datapacktestsbase(object): |
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40 def __init__(self, datapackreader, paramsavailable): |
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41 self.datapackreader = datapackreader |
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42 self.paramsavailable = paramsavailable |
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43 |
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44 def setUp(self): |
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45 self.tempdirs = [] |
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46 |
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47 def tearDown(self): |
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48 for d in self.tempdirs: |
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49 shutil.rmtree(d) |
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50 |
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51 def makeTempDir(self): |
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52 tempdir = pycompat.bytestr(tempfile.mkdtemp()) |
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53 self.tempdirs.append(tempdir) |
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54 return tempdir |
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55 |
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56 def getHash(self, content): |
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57 return hashlib.sha1(content).digest() |
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58 |
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59 def getFakeHash(self): |
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60 return b''.join( |
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61 pycompat.bytechr(random.randint(0, 255)) for _ in range(20) |
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62 ) |
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63 |
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64 def createPack(self, revisions=None, packdir=None): |
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65 if revisions is None: |
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66 revisions = [ |
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67 ( |
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68 b"filename", |
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69 self.getFakeHash(), |
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70 sha1nodeconstants.nullid, |
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71 b"content", |
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72 ) |
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73 ] |
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74 |
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75 if packdir is None: |
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76 packdir = self.makeTempDir() |
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77 |
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78 packer = datapack.mutabledatapack(uimod.ui(), packdir, version=2) |
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79 |
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80 for args in revisions: |
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81 filename, node, base, content = args[0:4] |
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82 # meta is optional |
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83 meta = None |
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84 if len(args) > 4: |
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85 meta = args[4] |
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86 packer.add(filename, node, base, content, metadata=meta) |
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87 |
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88 path = packer.close() |
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89 return self.datapackreader(path) |
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90 |
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91 def _testAddSingle(self, content): |
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92 """Test putting a simple blob into a pack and reading it out.""" |
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93 filename = b"foo" |
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94 node = self.getHash(content) |
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95 |
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96 revisions = [(filename, node, sha1nodeconstants.nullid, content)] |
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97 pack = self.createPack(revisions) |
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98 if self.paramsavailable: |
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99 self.assertEqual( |
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100 pack.params.fanoutprefix, basepack.SMALLFANOUTPREFIX |
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101 ) |
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102 |
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103 chain = pack.getdeltachain(filename, node) |
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104 self.assertEqual(content, chain[0][4]) |
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105 |
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106 def testAddSingle(self): |
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107 self._testAddSingle(b'') |
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108 |
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109 def testAddSingleEmpty(self): |
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110 self._testAddSingle(b'abcdef') |
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111 |
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112 def testAddMultiple(self): |
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113 """Test putting multiple unrelated blobs into a pack and reading them |
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114 out. |
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115 """ |
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116 revisions = [] |
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117 for i in range(10): |
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118 filename = b"foo%d" % i |
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119 content = b"abcdef%d" % i |
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120 node = self.getHash(content) |
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121 revisions.append((filename, node, self.getFakeHash(), content)) |
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122 |
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123 pack = self.createPack(revisions) |
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124 |
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125 for filename, node, base, content in revisions: |
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126 entry = pack.getdelta(filename, node) |
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127 self.assertEqual((content, filename, base, {}), entry) |
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128 |
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129 chain = pack.getdeltachain(filename, node) |
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130 self.assertEqual(content, chain[0][4]) |
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131 |
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132 def testAddDeltas(self): |
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133 """Test putting multiple delta blobs into a pack and read the chain.""" |
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134 revisions = [] |
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135 filename = b"foo" |
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136 lastnode = sha1nodeconstants.nullid |
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137 for i in range(10): |
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138 content = b"abcdef%d" % i |
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139 node = self.getHash(content) |
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140 revisions.append((filename, node, lastnode, content)) |
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141 lastnode = node |
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142 |
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143 pack = self.createPack(revisions) |
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144 |
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145 entry = pack.getdelta(filename, revisions[0][1]) |
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146 realvalue = (revisions[0][3], filename, revisions[0][2], {}) |
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147 self.assertEqual(entry, realvalue) |
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148 |
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149 # Test that the chain for the final entry has all the others |
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150 chain = pack.getdeltachain(filename, node) |
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151 for i in range(10): |
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152 content = b"abcdef%d" % i |
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153 self.assertEqual(content, chain[-i - 1][4]) |
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154 |
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155 def testPackMany(self): |
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156 """Pack many related and unrelated objects.""" |
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157 # Build a random pack file |
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158 revisions = [] |
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159 blobs = {} |
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160 random.seed(0) |
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161 for i in range(100): |
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162 filename = b"filename-%d" % i |
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163 filerevs = [] |
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164 for j in range(random.randint(1, 100)): |
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165 content = b"content-%d" % j |
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166 node = self.getHash(content) |
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167 lastnode = sha1nodeconstants.nullid |
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168 if len(filerevs) > 0: |
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169 lastnode = filerevs[random.randint(0, len(filerevs) - 1)] |
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170 filerevs.append(node) |
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171 blobs[(filename, node, lastnode)] = content |
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172 revisions.append((filename, node, lastnode, content)) |
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173 |
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174 pack = self.createPack(revisions) |
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175 |
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176 # Verify the pack contents |
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177 for (filename, node, lastnode), content in sorted(blobs.items()): |
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178 chain = pack.getdeltachain(filename, node) |
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179 for entry in chain: |
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180 expectedcontent = blobs[(entry[0], entry[1], entry[3])] |
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181 self.assertEqual(entry[4], expectedcontent) |
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182 |
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183 def testPackMetadata(self): |
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184 revisions = [] |
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185 for i in range(100): |
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186 filename = b'%d.txt' % i |
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187 content = b'put-something-here \n' * i |
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188 node = self.getHash(content) |
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189 meta = { |
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190 constants.METAKEYFLAG: i ** 4, |
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191 constants.METAKEYSIZE: len(content), |
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192 b'Z': b'random_string', |
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193 b'_': b'\0' * i, |
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194 } |
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195 revisions.append( |
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196 (filename, node, sha1nodeconstants.nullid, content, meta) |
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197 ) |
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198 pack = self.createPack(revisions) |
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199 for name, node, x, content, origmeta in revisions: |
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200 parsedmeta = pack.getmeta(name, node) |
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201 # flag == 0 should be optimized out |
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202 if origmeta[constants.METAKEYFLAG] == 0: |
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203 del origmeta[constants.METAKEYFLAG] |
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204 self.assertEqual(parsedmeta, origmeta) |
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205 |
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206 def testGetMissing(self): |
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207 """Test the getmissing() api.""" |
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208 revisions = [] |
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209 filename = b"foo" |
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210 lastnode = sha1nodeconstants.nullid |
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211 for i in range(10): |
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212 content = b"abcdef%d" % i |
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213 node = self.getHash(content) |
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214 revisions.append((filename, node, lastnode, content)) |
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215 lastnode = node |
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216 |
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217 pack = self.createPack(revisions) |
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218 |
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219 missing = pack.getmissing([(b"foo", revisions[0][1])]) |
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220 self.assertFalse(missing) |
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221 |
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222 missing = pack.getmissing( |
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223 [(b"foo", revisions[0][1]), (b"foo", revisions[1][1])] |
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224 ) |
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225 self.assertFalse(missing) |
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226 |
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227 fakenode = self.getFakeHash() |
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228 missing = pack.getmissing( |
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229 [(b"foo", revisions[0][1]), (b"foo", fakenode)] |
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230 ) |
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231 self.assertEqual(missing, [(b"foo", fakenode)]) |
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232 |
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233 def testAddThrows(self): |
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234 pack = self.createPack() |
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235 |
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236 try: |
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237 pack.add(b'filename', sha1nodeconstants.nullid, b'contents') |
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238 self.assertTrue(False, "datapack.add should throw") |
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239 except RuntimeError: |
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240 pass |
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241 |
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242 def testBadVersionThrows(self): |
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243 pack = self.createPack() |
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244 path = pack.path + b'.datapack' |
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245 with open(path, 'rb') as f: |
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246 raw = f.read() |
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247 raw = struct.pack('!B', 255) + raw[1:] |
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248 os.chmod(path, os.stat(path).st_mode | stat.S_IWRITE) |
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249 with open(path, 'wb+') as f: |
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250 f.write(raw) |
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251 |
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252 try: |
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253 self.datapackreader(pack.path) |
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254 self.assertTrue(False, "bad version number should have thrown") |
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255 except RuntimeError: |
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256 pass |
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257 |
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258 def testMissingDeltabase(self): |
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259 fakenode = self.getFakeHash() |
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260 revisions = [(b"filename", fakenode, self.getFakeHash(), b"content")] |
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261 pack = self.createPack(revisions) |
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262 chain = pack.getdeltachain(b"filename", fakenode) |
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263 self.assertEqual(len(chain), 1) |
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264 |
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265 def testLargePack(self): |
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266 """Test creating and reading from a large pack with over X entries. |
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267 This causes it to use a 2^16 fanout table instead.""" |
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268 revisions = [] |
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269 blobs = {} |
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270 total = basepack.SMALLFANOUTCUTOFF + 1 |
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271 for i in pycompat.xrange(total): |
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272 filename = b"filename-%d" % i |
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273 content = filename |
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274 node = self.getHash(content) |
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275 blobs[(filename, node)] = content |
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276 revisions.append( |
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277 (filename, node, sha1nodeconstants.nullid, content) |
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278 ) |
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279 |
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280 pack = self.createPack(revisions) |
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281 if self.paramsavailable: |
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282 self.assertEqual( |
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283 pack.params.fanoutprefix, basepack.LARGEFANOUTPREFIX |
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284 ) |
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285 |
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286 for (filename, node), content in blobs.items(): |
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287 actualcontent = pack.getdeltachain(filename, node)[0][4] |
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288 self.assertEqual(actualcontent, content) |
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289 |
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290 def testPacksCache(self): |
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291 """Test that we remember the most recent packs while fetching the delta |
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292 chain.""" |
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293 |
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294 packdir = self.makeTempDir() |
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295 deltachains = [] |
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296 |
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297 numpacks = 10 |
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298 revisionsperpack = 100 |
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299 |
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300 for i in range(numpacks): |
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301 chain = [] |
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302 revision = ( |
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303 b'%d' % i, |
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304 self.getFakeHash(), |
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305 sha1nodeconstants.nullid, |
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306 b"content", |
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307 ) |
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308 |
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309 for _ in range(revisionsperpack): |
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310 chain.append(revision) |
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311 revision = ( |
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312 b'%d' % i, |
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313 self.getFakeHash(), |
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314 revision[1], |
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315 self.getFakeHash(), |
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316 ) |
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317 |
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318 self.createPack(chain, packdir) |
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319 deltachains.append(chain) |
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320 |
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321 class testdatapackstore(datapack.datapackstore): |
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322 # Ensures that we are not keeping everything in the cache. |
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323 DEFAULTCACHESIZE = numpacks // 2 |
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324 |
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325 store = testdatapackstore(uimod.ui(), packdir) |
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326 |
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327 random.shuffle(deltachains) |
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328 for randomchain in deltachains: |
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329 revision = random.choice(randomchain) |
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330 chain = store.getdeltachain(revision[0], revision[1]) |
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331 |
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332 mostrecentpack = next(iter(store.packs), None) |
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333 self.assertEqual( |
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334 mostrecentpack.getdeltachain(revision[0], revision[1]), chain |
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335 ) |
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336 |
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337 self.assertEqual(randomchain.index(revision) + 1, len(chain)) |
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338 |
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339 # perf test off by default since it's slow |
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340 def _testIndexPerf(self): |
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341 random.seed(0) |
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342 print("Multi-get perf test") |
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343 packsizes = [ |
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344 100, |
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345 10000, |
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346 100000, |
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347 500000, |
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348 1000000, |
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349 3000000, |
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350 ] |
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351 lookupsizes = [ |
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352 10, |
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353 100, |
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354 1000, |
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355 10000, |
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356 100000, |
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357 1000000, |
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358 ] |
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359 for packsize in packsizes: |
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360 revisions = [] |
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361 for i in pycompat.xrange(packsize): |
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362 filename = b"filename-%d" % i |
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363 content = b"content-%d" % i |
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364 node = self.getHash(content) |
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365 revisions.append( |
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366 (filename, node, sha1nodeconstants.nullid, content) |
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367 ) |
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368 |
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369 path = self.createPack(revisions).path |
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370 |
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371 # Perf of large multi-get |
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372 import gc |
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373 |
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374 gc.disable() |
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375 pack = self.datapackreader(path) |
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376 for lookupsize in lookupsizes: |
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377 if lookupsize > packsize: |
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378 continue |
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379 random.shuffle(revisions) |
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380 findnodes = [(rev[0], rev[1]) for rev in revisions] |
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381 |
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382 start = time.time() |
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383 pack.getmissing(findnodes[:lookupsize]) |
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384 elapsed = time.time() - start |
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385 print( |
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386 "%s pack %d lookups = %0.04f" |
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387 % ( |
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388 ('%d' % packsize).rjust(7), |
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389 ('%d' % lookupsize).rjust(7), |
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390 elapsed, |
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391 ) |
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392 ) |
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393 |
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394 print("") |
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395 gc.enable() |
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396 |
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397 # The perf test is meant to produce output, so we always fail the test |
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398 # so the user sees the output. |
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399 raise RuntimeError("perf test always fails") |
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400 |
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401 |
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402 class datapacktests(datapacktestsbase, unittest.TestCase): |
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403 def __init__(self, *args, **kwargs): |
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404 datapacktestsbase.__init__(self, datapack.datapack, True) |
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405 unittest.TestCase.__init__(self, *args, **kwargs) |
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406 |
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407 |
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408 # TODO: |
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409 # datapack store: |
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410 # - getmissing |
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411 # - GC two packs into one |
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412 |
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413 if __name__ == '__main__': |
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414 if pycompat.iswindows: |
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415 sys.exit(80) # Skip on Windows |
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416 silenttestrunner.main(__name__) |