annotate tests/test-parseindex2.py @ 36705:c6901665cd5b

py3: make sure __repr__ returns a str # skip-blame because just r'' prefix Differential Revision: https://phab.mercurial-scm.org/D2652
author Pulkit Goyal <7895pulkit@gmail.com>
date Sun, 04 Mar 2018 22:40:33 +0530
parents df448de7cf3b
children b4e42a9bd12e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 """This unit test primarily tests parsers.parse_index2().
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2
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3 It also checks certain aspects of the parsers module as a whole.
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4 """
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5
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6 from __future__ import absolute_import, print_function
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7
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8 import struct
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9 import subprocess
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10 import sys
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11
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12 from mercurial.node import (
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13 nullid,
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14 nullrev,
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15 )
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16 from mercurial import (
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17 policy,
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18 )
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19
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20 parsers = policy.importmod(r'parsers')
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21
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22 # original python implementation
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23 def gettype(q):
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24 return int(q & 0xFFFF)
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25
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26 def offset_type(offset, type):
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27 return long(long(offset) << 16 | type)
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28
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29 indexformatng = ">Qiiiiii20s12x"
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30
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31 def py_parseindex(data, inline) :
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32 s = 64
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33 cache = None
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34 index = []
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35 nodemap = {nullid: nullrev}
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36 n = off = 0
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37
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38 l = len(data) - s
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39 append = index.append
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40 if inline:
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41 cache = (0, data)
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42 while off <= l:
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43 e = struct.unpack(indexformatng, data[off:off + s])
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44 nodemap[e[7]] = n
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45 append(e)
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46 n += 1
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47 if e[1] < 0:
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48 break
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49 off += e[1] + s
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50 else:
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51 while off <= l:
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52 e = struct.unpack(indexformatng, data[off:off + s])
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53 nodemap[e[7]] = n
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54 append(e)
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55 n += 1
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56 off += s
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57
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58 e = list(index[0])
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59 type = gettype(e[0])
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60 e[0] = offset_type(0, type)
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61 index[0] = tuple(e)
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62
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63 # add the magic null revision at -1
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64 index.append((0, 0, 0, -1, -1, -1, -1, nullid))
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65
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66 return index, cache
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67
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68 data_inlined = '\x00\x01\x00\x01\x00\x00\x00\x00\x00\x00\x01\x8c' \
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69 '\x00\x00\x04\x07\x00\x00\x00\x00\x00\x00\x15\x15\xff\xff\xff' \
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70 '\xff\xff\xff\xff\xff\xebG\x97\xb7\x1fB\x04\xcf\x13V\x81\tw\x1b' \
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71 'w\xdduR\xda\xc6\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' \
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72 'x\x9c\x9d\x93?O\xc30\x10\xc5\xf7|\x8a\xdb\x9a\xa8m\x06\xd8*\x95' \
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73 '\x81B\xa1\xa2\xa2R\xcb\x86Pd\x9a\x0b5$vd_\x04\xfd\xf6\x9c\xff@' \
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74 '\x11!\x0b\xd9\xec\xf7\xbbw\xe7gG6\xad6\x04\xdaN\xc0\x92\xa0$)' \
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75 '\xb1\x82\xa2\xd1%\x16\xa4\x8b7\xa9\xca\xd4-\xb2Y\x02\xfc\xc9' \
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76 '\xcaS\xf9\xaeX\xed\xb6\xd77Q\x02\x83\xd4\x19\xf5--Y\xea\xe1W' \
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77 '\xab\xed\x10\xceR\x0f_\xdf\xdf\r\xe1,\xf5\xf0\xcb\xf5 \xceR\x0f' \
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78 '_\xdc\x0e\x0e\xc3R\x0f_\xae\x96\x9b!\x9e\xa5\x1e\xbf\xdb,\x06' \
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79 '\xc7q\x9a/\x88\x82\xc3B\xea\xb5\xb4TJ\x93\xb6\x82\x0e\xe16\xe6' \
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80 'KQ\xdb\xaf\xecG\xa3\xd1 \x01\xd3\x0b_^\xe8\xaa\xa0\xae\xad\xd1' \
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81 '&\xbef\x1bz\x08\xb0|\xc9Xz\x06\xf6Z\x91\x90J\xaa\x17\x90\xaa' \
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82 '\xd2\xa6\x11$5C\xcf\xba#\xa0\x03\x02*2\x92-\xfc\xb1\x94\xdf\xe2' \
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83 '\xae\xb8\'m\x8ey0^\x85\xd3\x82\xb4\xf0`:\x9c\x00\x8a\xfd\x01' \
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84 '\xb0\xc6\x86\x8b\xdd\xae\x80\xf3\xa9\x9fd\x16\n\x00R%\x1a\x06' \
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85 '\xe9\xd8b\x98\x1d\xf4\xf3+\x9bf\x01\xd8p\x1b\xf3.\xed\x9f^g\xc3' \
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86 '^\xd9W81T\xdb\xd5\x04sx|\xf2\xeb\xd6`%?x\xed"\x831\xbf\xf3\xdc' \
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87 'b\xeb%gaY\xe1\xad\x9f\xb9f\'1w\xa9\xa5a\x83s\x82J\xb98\xbc4\x8b' \
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88 '\x83\x00\x9f$z\xb8#\xa5\xb1\xdf\x98\xd9\xec\x1b\x89O\xe3Ts\x9a4' \
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89 '\x17m\x8b\xfc\x8f\xa5\x95\x9a\xfc\xfa\xed,\xe5|\xa1\xfe\x15\xb9' \
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90 '\xbc\xb2\x93\x1f\xf2\x95\xff\xdf,\x1a\xc5\xe7\x17*\x93Oz:>\x0e'
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91
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92 data_non_inlined = '\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01D\x19' \
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93 '\x00\x07e\x12\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff' \
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94 '\xff\xff\xff\xff\xd1\xf4\xbb\xb0\xbe\xfc\x13\xbd\x8c\xd3\x9d' \
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95 '\x0f\xcd\xd9;\x8c\x07\x8cJ/\x00\x00\x00\x00\x00\x00\x00\x00\x00' \
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96 '\x00\x00\x00\x00\x00\x00\x01D\x19\x00\x00\x00\x00\x00\xdf\x00' \
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97 '\x00\x01q\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\xff' \
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98 '\xff\xff\xff\xc1\x12\xb9\x04\x96\xa4Z1t\x91\xdfsJ\x90\xf0\x9bh' \
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99 '\x07l&\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' \
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100 '\x00\x01D\xf8\x00\x00\x00\x00\x01\x1b\x00\x00\x01\xb8\x00\x00' \
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101 '\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\xff\xff\xff\xff\x02\n' \
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102 '\x0e\xc6&\xa1\x92\xae6\x0b\x02i\xfe-\xe5\xbao\x05\xd1\xe7\x00' \
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103 '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01F' \
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104 '\x13\x00\x00\x00\x00\x01\xec\x00\x00\x03\x06\x00\x00\x00\x01' \
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105 '\x00\x00\x00\x03\x00\x00\x00\x02\xff\xff\xff\xff\x12\xcb\xeby1' \
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106 '\xb6\r\x98B\xcb\x07\xbd`\x8f\x92\xd9\xc4\x84\xbdK\x00\x00\x00' \
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107 '\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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108
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109 def parse_index2(data, inline):
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110 index, chunkcache = parsers.parse_index2(data, inline)
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111 return list(index), chunkcache
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112
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113 def importparsers(hexversion):
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114 """Import mercurial.parsers with the given sys.hexversion."""
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115 # The file parsers.c inspects sys.hexversion to determine the version
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116 # of the currently-running Python interpreter, so we monkey-patch
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117 # sys.hexversion to simulate using different versions.
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118 code = ("import sys; sys.hexversion=%s; "
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119 "import mercurial.cext.parsers" % hexversion)
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120 cmd = "python -c \"%s\"" % code
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121 # We need to do these tests inside a subprocess because parser.c's
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122 # version-checking code happens inside the module init function, and
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123 # when using reload() to reimport an extension module, "The init function
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124 # of extension modules is not called a second time"
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125 # (from http://docs.python.org/2/library/functions.html?#reload).
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126 p = subprocess.Popen(cmd, shell=True,
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127 stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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128 return p.communicate() # returns stdout, stderr
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129
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130 def printhexfail(testnumber, hexversion, stdout, expected):
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131 try:
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132 hexstring = hex(hexversion)
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133 except TypeError:
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134 hexstring = None
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135 print("FAILED: version test #%s with Python %s and patched "
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136 "sys.hexversion %r (%r):\n Expected %s but got:\n-->'%s'\n" %
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137 (testnumber, sys.version_info, hexversion, hexstring, expected,
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138 stdout))
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139
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140 def testversionokay(testnumber, hexversion):
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141 stdout, stderr = importparsers(hexversion)
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142 if stdout:
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143 printhexfail(testnumber, hexversion, stdout, expected="no stdout")
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144
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145 def testversionfail(testnumber, hexversion):
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146 stdout, stderr = importparsers(hexversion)
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147 # We include versionerrortext to distinguish from other ImportErrors.
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148 errtext = "ImportError: %s" % parsers.versionerrortext
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149 if errtext not in stdout:
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150 printhexfail(testnumber, hexversion, stdout,
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151 expected="stdout to contain %r" % errtext)
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152
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153 def makehex(major, minor, micro):
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154 return int("%x%02x%02x00" % (major, minor, micro), 16)
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155
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156 def runversiontests():
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157 """Check the version-detection logic when importing parsers."""
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158 info = sys.version_info
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159 major, minor, micro = info[0], info[1], info[2]
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160 # Test same major-minor versions.
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161 testversionokay(1, makehex(major, minor, micro))
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162 testversionokay(2, makehex(major, minor, micro + 1))
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163 # Test different major-minor versions.
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164 testversionfail(3, makehex(major + 1, minor, micro))
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165 testversionfail(4, makehex(major, minor + 1, micro))
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166 testversionfail(5, "'foo'")
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167
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168 def runtest() :
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169 # Only test the version-detection logic if it is present.
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170 try:
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171 parsers.versionerrortext
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172 except AttributeError:
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173 pass
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174 else:
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175 runversiontests()
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176
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177 # Check that parse_index2() raises TypeError on bad arguments.
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178 try:
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179 parse_index2(0, True)
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180 except TypeError:
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181 pass
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182 else:
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183 print("Expected to get TypeError.")
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184
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185 # Check parsers.parse_index2() on an index file against the original
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186 # Python implementation of parseindex, both with and without inlined data.
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187
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188 py_res_1 = py_parseindex(data_inlined, True)
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189 c_res_1 = parse_index2(data_inlined, True)
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190
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191 py_res_2 = py_parseindex(data_non_inlined, False)
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192 c_res_2 = parse_index2(data_non_inlined, False)
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193
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194 if py_res_1 != c_res_1:
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195 print("Parse index result (with inlined data) differs!")
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196
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197 if py_res_2 != c_res_2:
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198 print("Parse index result (no inlined data) differs!")
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199
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200 ix = parsers.parse_index2(data_inlined, True)[0]
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201 for i, r in enumerate(ix):
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202 if r[7] == nullid:
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203 i = -1
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204 try:
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205 if ix[r[7]] != i:
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206 print('Reverse lookup inconsistent for %r'
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207 % r[7].encode('hex'))
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208 except TypeError:
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209 # pure version doesn't support this
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210 break
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211
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212 print("done")
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213
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214 runtest()