Mercurial > hg
annotate tests/test-parseindex2.py @ 26519:48476c6129a2
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author | Siddharth Agarwal <sid0@fb.com> |
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date | Wed, 07 Oct 2015 00:27:23 -0700 |
parents | 3681de20b0a7 |
children | b502138f5faa |
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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 mercurial import parsers |
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7 from mercurial.node import nullid, nullrev |
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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 # original python implementation |
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13 def gettype(q): |
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14 return int(q & 0xFFFF) |
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15 |
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16 def offset_type(offset, type): |
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17 return long(long(offset) << 16 | type) |
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18 |
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19 indexformatng = ">Qiiiiii20s12x" |
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20 |
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21 def py_parseindex(data, inline) : |
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22 s = 64 |
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23 cache = None |
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24 index = [] |
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25 nodemap = {nullid: nullrev} |
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26 n = off = 0 |
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28 l = len(data) - s |
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29 append = index.append |
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30 if inline: |
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31 cache = (0, data) |
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32 while off <= l: |
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33 e = struct.unpack(indexformatng, data[off:off + s]) |
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34 nodemap[e[7]] = n |
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35 append(e) |
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36 n += 1 |
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37 if e[1] < 0: |
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38 break |
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39 off += e[1] + s |
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40 else: |
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41 while off <= l: |
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42 e = struct.unpack(indexformatng, data[off:off + s]) |
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43 nodemap[e[7]] = n |
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44 append(e) |
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45 n += 1 |
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46 off += s |
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47 |
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48 e = list(index[0]) |
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49 type = gettype(e[0]) |
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50 e[0] = offset_type(0, type) |
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51 index[0] = tuple(e) |
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52 |
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53 # add the magic null revision at -1 |
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54 index.append((0, 0, 0, -1, -1, -1, -1, nullid)) |
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55 |
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56 return index, cache |
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57 |
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58 data_inlined = '\x00\x01\x00\x01\x00\x00\x00\x00\x00\x00\x01\x8c' \ |
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59 '\x00\x00\x04\x07\x00\x00\x00\x00\x00\x00\x15\x15\xff\xff\xff' \ |
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60 '\xff\xff\xff\xff\xff\xebG\x97\xb7\x1fB\x04\xcf\x13V\x81\tw\x1b' \ |
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61 'w\xdduR\xda\xc6\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' \ |
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62 'x\x9c\x9d\x93?O\xc30\x10\xc5\xf7|\x8a\xdb\x9a\xa8m\x06\xd8*\x95' \ |
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63 '\x81B\xa1\xa2\xa2R\xcb\x86Pd\x9a\x0b5$vd_\x04\xfd\xf6\x9c\xff@' \ |
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64 '\x11!\x0b\xd9\xec\xf7\xbbw\xe7gG6\xad6\x04\xdaN\xc0\x92\xa0$)' \ |
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65 '\xb1\x82\xa2\xd1%\x16\xa4\x8b7\xa9\xca\xd4-\xb2Y\x02\xfc\xc9' \ |
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66 '\xcaS\xf9\xaeX\xed\xb6\xd77Q\x02\x83\xd4\x19\xf5--Y\xea\xe1W' \ |
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67 '\xab\xed\x10\xceR\x0f_\xdf\xdf\r\xe1,\xf5\xf0\xcb\xf5 \xceR\x0f' \ |
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68 '_\xdc\x0e\x0e\xc3R\x0f_\xae\x96\x9b!\x9e\xa5\x1e\xbf\xdb,\x06' \ |
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69 '\xc7q\x9a/\x88\x82\xc3B\xea\xb5\xb4TJ\x93\xb6\x82\x0e\xe16\xe6' \ |
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70 'KQ\xdb\xaf\xecG\xa3\xd1 \x01\xd3\x0b_^\xe8\xaa\xa0\xae\xad\xd1' \ |
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71 '&\xbef\x1bz\x08\xb0|\xc9Xz\x06\xf6Z\x91\x90J\xaa\x17\x90\xaa' \ |
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72 '\xd2\xa6\x11$5C\xcf\xba#\xa0\x03\x02*2\x92-\xfc\xb1\x94\xdf\xe2' \ |
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73 '\xae\xb8\'m\x8ey0^\x85\xd3\x82\xb4\xf0`:\x9c\x00\x8a\xfd\x01' \ |
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74 '\xb0\xc6\x86\x8b\xdd\xae\x80\xf3\xa9\x9fd\x16\n\x00R%\x1a\x06' \ |
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75 '\xe9\xd8b\x98\x1d\xf4\xf3+\x9bf\x01\xd8p\x1b\xf3.\xed\x9f^g\xc3' \ |
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76 '^\xd9W81T\xdb\xd5\x04sx|\xf2\xeb\xd6`%?x\xed"\x831\xbf\xf3\xdc' \ |
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77 'b\xeb%gaY\xe1\xad\x9f\xb9f\'1w\xa9\xa5a\x83s\x82J\xb98\xbc4\x8b' \ |
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78 '\x83\x00\x9f$z\xb8#\xa5\xb1\xdf\x98\xd9\xec\x1b\x89O\xe3Ts\x9a4' \ |
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79 '\x17m\x8b\xfc\x8f\xa5\x95\x9a\xfc\xfa\xed,\xe5|\xa1\xfe\x15\xb9' \ |
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80 '\xbc\xb2\x93\x1f\xf2\x95\xff\xdf,\x1a\xc5\xe7\x17*\x93Oz:>\x0e' |
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81 |
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82 data_non_inlined = '\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01D\x19' \ |
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83 '\x00\x07e\x12\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff' \ |
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84 '\xff\xff\xff\xff\xd1\xf4\xbb\xb0\xbe\xfc\x13\xbd\x8c\xd3\x9d' \ |
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85 '\x0f\xcd\xd9;\x8c\x07\x8cJ/\x00\x00\x00\x00\x00\x00\x00\x00\x00' \ |
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86 '\x00\x00\x00\x00\x00\x00\x01D\x19\x00\x00\x00\x00\x00\xdf\x00' \ |
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87 '\x00\x01q\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\xff' \ |
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88 '\xff\xff\xff\xc1\x12\xb9\x04\x96\xa4Z1t\x91\xdfsJ\x90\xf0\x9bh' \ |
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89 '\x07l&\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' \ |
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90 '\x00\x01D\xf8\x00\x00\x00\x00\x01\x1b\x00\x00\x01\xb8\x00\x00' \ |
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91 '\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\xff\xff\xff\xff\x02\n' \ |
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92 '\x0e\xc6&\xa1\x92\xae6\x0b\x02i\xfe-\xe5\xbao\x05\xd1\xe7\x00' \ |
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93 '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01F' \ |
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94 '\x13\x00\x00\x00\x00\x01\xec\x00\x00\x03\x06\x00\x00\x00\x01' \ |
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95 '\x00\x00\x00\x03\x00\x00\x00\x02\xff\xff\xff\xff\x12\xcb\xeby1' \ |
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96 '\xb6\r\x98B\xcb\x07\xbd`\x8f\x92\xd9\xc4\x84\xbdK\x00\x00\x00' \ |
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97 '\x00\x00\x00\x00\x00\x00\x00\x00\x00' |
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98 |
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99 def parse_index2(data, inline): |
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100 index, chunkcache = parsers.parse_index2(data, inline) |
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101 return list(index), chunkcache |
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102 |
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103 def importparsers(hexversion): |
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104 """Import mercurial.parsers with the given sys.hexversion.""" |
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105 # The file parsers.c inspects sys.hexversion to determine the version |
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106 # of the currently-running Python interpreter, so we monkey-patch |
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107 # sys.hexversion to simulate using different versions. |
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108 code = ("import sys; sys.hexversion=%s; " |
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109 "import mercurial.parsers" % hexversion) |
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110 cmd = "python -c \"%s\"" % code |
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111 # We need to do these tests inside a subprocess because parser.c's |
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112 # version-checking code happens inside the module init function, and |
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113 # when using reload() to reimport an extension module, "The init function |
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114 # of extension modules is not called a second time" |
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115 # (from http://docs.python.org/2/library/functions.html?#reload). |
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116 p = subprocess.Popen(cmd, shell=True, |
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117 stdout=subprocess.PIPE, stderr=subprocess.STDOUT) |
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118 return p.communicate() # returns stdout, stderr |
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119 |
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120 def printhexfail(testnumber, hexversion, stdout, expected): |
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121 try: |
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122 hexstring = hex(hexversion) |
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123 except TypeError: |
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124 hexstring = None |
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125 print ("FAILED: version test #%s with Python %s and patched " |
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126 "sys.hexversion %r (%r):\n Expected %s but got:\n-->'%s'\n" % |
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127 (testnumber, sys.version_info, hexversion, hexstring, expected, |
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128 stdout)) |
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129 |
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130 def testversionokay(testnumber, hexversion): |
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131 stdout, stderr = importparsers(hexversion) |
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132 if stdout: |
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133 printhexfail(testnumber, hexversion, stdout, expected="no stdout") |
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134 |
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135 def testversionfail(testnumber, hexversion): |
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136 stdout, stderr = importparsers(hexversion) |
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137 # We include versionerrortext to distinguish from other ImportErrors. |
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138 errtext = "ImportError: %s" % parsers.versionerrortext |
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139 if errtext not in stdout: |
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140 printhexfail(testnumber, hexversion, stdout, |
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141 expected="stdout to contain %r" % errtext) |
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142 |
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143 def makehex(major, minor, micro): |
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144 return int("%x%02x%02x00" % (major, minor, micro), 16) |
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145 |
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146 def runversiontests(): |
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147 """Check the version-detection logic when importing parsers.""" |
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148 info = sys.version_info |
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149 major, minor, micro = info[0], info[1], info[2] |
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150 # Test same major-minor versions. |
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151 testversionokay(1, makehex(major, minor, micro)) |
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152 testversionokay(2, makehex(major, minor, micro + 1)) |
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153 # Test different major-minor versions. |
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154 testversionfail(3, makehex(major + 1, minor, micro)) |
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155 testversionfail(4, makehex(major, minor + 1, micro)) |
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156 testversionfail(5, "'foo'") |
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157 |
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158 def runtest() : |
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159 # Only test the version-detection logic if it is present. |
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160 try: |
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161 parsers.versionerrortext |
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162 except AttributeError: |
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163 pass |
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164 else: |
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165 runversiontests() |
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166 |
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167 # Check that parse_index2() raises TypeError on bad arguments. |
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168 try: |
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169 parse_index2(0, True) |
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170 except TypeError: |
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171 pass |
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172 else: |
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173 print "Expected to get TypeError." |
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174 |
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175 # Check parsers.parse_index2() on an index file against the original |
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176 # Python implementation of parseindex, both with and without inlined data. |
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177 |
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178 py_res_1 = py_parseindex(data_inlined, True) |
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179 c_res_1 = parse_index2(data_inlined, True) |
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180 |
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181 py_res_2 = py_parseindex(data_non_inlined, False) |
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182 c_res_2 = parse_index2(data_non_inlined, False) |
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183 |
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184 if py_res_1 != c_res_1: |
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185 print "Parse index result (with inlined data) differs!" |
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186 |
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187 if py_res_2 != c_res_2: |
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188 print "Parse index result (no inlined data) differs!" |
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189 |
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190 ix = parsers.parse_index2(data_inlined, True)[0] |
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191 for i, r in enumerate(ix): |
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192 if r[7] == nullid: |
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193 i = -1 |
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194 try: |
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195 if ix[r[7]] != i: |
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196 print 'Reverse lookup inconsistent for %r' % r[7].encode('hex') |
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197 except TypeError: |
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198 # pure version doesn't support this |
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199 break |
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200 |
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201 print "done" |
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202 |
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203 runtest() |