annotate tests/test-parseindex2.py @ 40413:1ddd202c47d9

help: allow hiding of help topics Differential Revision: https://phab.mercurial-scm.org/D5077
author rdamazio@google.com
date Sat, 13 Oct 2018 05:43:39 -0700
parents daedb70fd467
children 2372284d9457
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 import unittest
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12
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13 from mercurial.node import (
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14 nullid,
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15 nullrev,
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16 )
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17 from mercurial import (
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18 node as nodemod,
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19 policy,
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20 pycompat,
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21 )
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22
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23 parsers = policy.importmod(r'parsers')
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24
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25 # original python implementation
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26 def gettype(q):
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27 return int(q & 0xFFFF)
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28
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29 def offset_type(offset, type):
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30 return int(int(offset) << 16 | type)
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31
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32 indexformatng = ">Qiiiiii20s12x"
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33
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34 def py_parseindex(data, inline) :
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35 s = 64
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36 cache = None
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37 index = []
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38 nodemap = {nullid: nullrev}
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39 n = off = 0
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40
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41 l = len(data) - s
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42 append = index.append
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43 if inline:
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44 cache = (0, data)
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45 while off <= l:
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46 e = struct.unpack(indexformatng, data[off:off + s])
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47 nodemap[e[7]] = n
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48 append(e)
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49 n += 1
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50 if e[1] < 0:
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51 break
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52 off += e[1] + s
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53 else:
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54 while off <= l:
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55 e = struct.unpack(indexformatng, data[off:off + s])
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56 nodemap[e[7]] = n
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57 append(e)
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58 n += 1
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59 off += s
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60
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61 e = list(index[0])
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62 type = gettype(e[0])
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63 e[0] = offset_type(0, type)
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64 index[0] = tuple(e)
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65
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66 return index, cache
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68 data_inlined = (
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69 b'\x00\x01\x00\x01\x00\x00\x00\x00\x00\x00\x01\x8c'
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70 b'\x00\x00\x04\x07\x00\x00\x00\x00\x00\x00\x15\x15\xff\xff\xff'
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71 b'\xff\xff\xff\xff\xff\xebG\x97\xb7\x1fB\x04\xcf\x13V\x81\tw\x1b'
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72 b'w\xdduR\xda\xc6\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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73 b'x\x9c\x9d\x93?O\xc30\x10\xc5\xf7|\x8a\xdb\x9a\xa8m\x06\xd8*\x95'
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74 b'\x81B\xa1\xa2\xa2R\xcb\x86Pd\x9a\x0b5$vd_\x04\xfd\xf6\x9c\xff@'
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75 b'\x11!\x0b\xd9\xec\xf7\xbbw\xe7gG6\xad6\x04\xdaN\xc0\x92\xa0$)'
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76 b'\xb1\x82\xa2\xd1%\x16\xa4\x8b7\xa9\xca\xd4-\xb2Y\x02\xfc\xc9'
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77 b'\xcaS\xf9\xaeX\xed\xb6\xd77Q\x02\x83\xd4\x19\xf5--Y\xea\xe1W'
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78 b'\xab\xed\x10\xceR\x0f_\xdf\xdf\r\xe1,\xf5\xf0\xcb\xf5 \xceR\x0f'
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79 b'_\xdc\x0e\x0e\xc3R\x0f_\xae\x96\x9b!\x9e\xa5\x1e\xbf\xdb,\x06'
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80 b'\xc7q\x9a/\x88\x82\xc3B\xea\xb5\xb4TJ\x93\xb6\x82\x0e\xe16\xe6'
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81 b'KQ\xdb\xaf\xecG\xa3\xd1 \x01\xd3\x0b_^\xe8\xaa\xa0\xae\xad\xd1'
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82 b'&\xbef\x1bz\x08\xb0|\xc9Xz\x06\xf6Z\x91\x90J\xaa\x17\x90\xaa'
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83 b'\xd2\xa6\x11$5C\xcf\xba#\xa0\x03\x02*2\x92-\xfc\xb1\x94\xdf\xe2'
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84 b'\xae\xb8\'m\x8ey0^\x85\xd3\x82\xb4\xf0`:\x9c\x00\x8a\xfd\x01'
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85 b'\xb0\xc6\x86\x8b\xdd\xae\x80\xf3\xa9\x9fd\x16\n\x00R%\x1a\x06'
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86 b'\xe9\xd8b\x98\x1d\xf4\xf3+\x9bf\x01\xd8p\x1b\xf3.\xed\x9f^g\xc3'
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87 b'^\xd9W81T\xdb\xd5\x04sx|\xf2\xeb\xd6`%?x\xed"\x831\xbf\xf3\xdc'
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88 b'b\xeb%gaY\xe1\xad\x9f\xb9f\'1w\xa9\xa5a\x83s\x82J\xb98\xbc4\x8b'
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89 b'\x83\x00\x9f$z\xb8#\xa5\xb1\xdf\x98\xd9\xec\x1b\x89O\xe3Ts\x9a4'
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90 b'\x17m\x8b\xfc\x8f\xa5\x95\x9a\xfc\xfa\xed,\xe5|\xa1\xfe\x15\xb9'
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91 b'\xbc\xb2\x93\x1f\xf2\x95\xff\xdf,\x1a\xc5\xe7\x17*\x93Oz:>\x0e'
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92 )
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93
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94 data_non_inlined = (
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95 b'\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01D\x19'
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96 b'\x00\x07e\x12\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff'
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97 b'\xff\xff\xff\xff\xd1\xf4\xbb\xb0\xbe\xfc\x13\xbd\x8c\xd3\x9d'
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98 b'\x0f\xcd\xd9;\x8c\x07\x8cJ/\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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99 b'\x00\x00\x00\x00\x00\x00\x01D\x19\x00\x00\x00\x00\x00\xdf\x00'
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100 b'\x00\x01q\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\xff'
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101 b'\xff\xff\xff\xc1\x12\xb9\x04\x96\xa4Z1t\x91\xdfsJ\x90\xf0\x9bh'
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102 b'\x07l&\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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103 b'\x00\x01D\xf8\x00\x00\x00\x00\x01\x1b\x00\x00\x01\xb8\x00\x00'
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104 b'\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\xff\xff\xff\xff\x02\n'
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105 b'\x0e\xc6&\xa1\x92\xae6\x0b\x02i\xfe-\xe5\xbao\x05\xd1\xe7\x00'
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106 b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01F'
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107 b'\x13\x00\x00\x00\x00\x01\xec\x00\x00\x03\x06\x00\x00\x00\x01'
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108 b'\x00\x00\x00\x03\x00\x00\x00\x02\xff\xff\xff\xff\x12\xcb\xeby1'
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109 b'\xb6\r\x98B\xcb\x07\xbd`\x8f\x92\xd9\xc4\x84\xbdK\x00\x00\x00'
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110 b'\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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111 )
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112
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113 def parse_index2(data, inline):
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114 index, chunkcache = parsers.parse_index2(data, inline)
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115 return list(index), chunkcache
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116
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117 def importparsers(hexversion):
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118 """Import mercurial.parsers with the given sys.hexversion."""
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119 # The file parsers.c inspects sys.hexversion to determine the version
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120 # of the currently-running Python interpreter, so we monkey-patch
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121 # sys.hexversion to simulate using different versions.
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122 code = ("import sys; sys.hexversion=%s; "
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123 "import mercurial.cext.parsers" % hexversion)
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124 cmd = "python -c \"%s\"" % code
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125 # We need to do these tests inside a subprocess because parser.c's
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126 # version-checking code happens inside the module init function, and
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127 # when using reload() to reimport an extension module, "The init function
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128 # of extension modules is not called a second time"
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129 # (from http://docs.python.org/2/library/functions.html?#reload).
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130 p = subprocess.Popen(cmd, shell=True,
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131 stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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132 return p.communicate() # returns stdout, stderr
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133
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134 def hexfailmsg(testnumber, hexversion, stdout, expected):
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135 try:
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136 hexstring = hex(hexversion)
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137 except TypeError:
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138 hexstring = None
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139 return ("FAILED: version test #%s with Python %s and patched "
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140 "sys.hexversion %r (%r):\n Expected %s but got:\n-->'%s'\n" %
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141 (testnumber, sys.version_info, hexversion, hexstring, expected,
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142 stdout))
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143
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144 def makehex(major, minor, micro):
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145 return int("%x%02x%02x00" % (major, minor, micro), 16)
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146
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147 class parseindex2tests(unittest.TestCase):
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148
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149 def assertversionokay(self, testnumber, hexversion):
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150 stdout, stderr = importparsers(hexversion)
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151 self.assertFalse(
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152 stdout, hexfailmsg(testnumber, hexversion, stdout, 'no stdout'))
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153
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154 def assertversionfail(self, testnumber, hexversion):
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155 stdout, stderr = importparsers(hexversion)
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156 # We include versionerrortext to distinguish from other ImportErrors.
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157 errtext = b"ImportError: %s" % pycompat.sysbytes(
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158 parsers.versionerrortext)
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159 self.assertIn(errtext, stdout,
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160 hexfailmsg(testnumber, hexversion, stdout,
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161 expected="stdout to contain %r" % errtext))
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162
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163 def testversiondetection(self):
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164 """Check the version-detection logic when importing parsers."""
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165 # Only test the version-detection logic if it is present.
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166 try:
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167 parsers.versionerrortext
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168 except AttributeError:
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169 return
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170 info = sys.version_info
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171 major, minor, micro = info[0], info[1], info[2]
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172 # Test same major-minor versions.
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173 self.assertversionokay(1, makehex(major, minor, micro))
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174 self.assertversionokay(2, makehex(major, minor, micro + 1))
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175 # Test different major-minor versions.
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176 self.assertversionfail(3, makehex(major + 1, minor, micro))
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177 self.assertversionfail(4, makehex(major, minor + 1, micro))
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178 self.assertversionfail(5, "'foo'")
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179
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180 def testbadargs(self):
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181 # Check that parse_index2() raises TypeError on bad arguments.
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182 with self.assertRaises(TypeError):
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183 parse_index2(0, True)
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184
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185 def testparseindexfile(self):
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186 # Check parsers.parse_index2() on an index file against the
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187 # original Python implementation of parseindex, both with and
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188 # without inlined data.
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189
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190 want = py_parseindex(data_inlined, True)
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191 got = parse_index2(data_inlined, True)
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192 self.assertEqual(want, got) # inline data
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193
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194 want = py_parseindex(data_non_inlined, False)
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195 got = parse_index2(data_non_inlined, False)
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196 self.assertEqual(want, got) # no inline data
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197
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198 ix = parsers.parse_index2(data_inlined, True)[0]
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199 for i, r in enumerate(ix):
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200 if r[7] == nullid:
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201 i = -1
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202 try:
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203 self.assertEqual(
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204 ix[r[7]], i,
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205 'Reverse lookup inconsistent for %r' % nodemod.hex(r[7]))
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206 except TypeError:
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207 # pure version doesn't support this
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208 break
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209
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210 def testminusone(self):
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211 want = (0, 0, 0, -1, -1, -1, -1, nullid)
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212 index, junk = parsers.parse_index2(data_inlined, True)
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213 got = index[-1]
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214 self.assertEqual(want, got) # inline data
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215
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216 index, junk = parsers.parse_index2(data_non_inlined, False)
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217 got = index[-1]
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218 self.assertEqual(want, got) # no inline data
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219
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220 if __name__ == '__main__':
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221 import silenttestrunner
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222 silenttestrunner.main(__name__)