Mercurial > hg
annotate tests/test-linerange.py @ 37048:fc5e261915b9
wireproto: require POST for all HTTPv2 requests
Wire protocol version 1 transfers argument data via request
headers by default. This has historically caused problems because
servers institute limits on the length of individual HTTP headers
as well as the total size of all request headers. Mercurial servers
can advertise the maximum length of an individual header. But
there's no guarantee any intermediate HTTP agents will accept
headers up to that length.
In the existing wire protocol, server operators typically also
key off the HTTP request method to implement authentication.
For example, GET requests translate to read-only requests and
can be allowed. But read-write commands must use POST and require
authentication. This has typically worked because the only wire
protocol commands that use POST modify the repo (e.g. the
"unbundle" command).
There is an experimental feature to enable clients to transmit
argument data via POST request bodies. This is technically a
better and more robust solution. But we can't enable it by default
because of servers assuming POST means write access.
In version 2 of the wire protocol, the permissions of a request
are encoded in the URL. And with it being a new protocol in a new
URL space, we're not constrained by backwards compatibility
requirements.
This commit adopts the technically superior mechanism of using
HTTP request bodies to send argument data by requiring POST for
all commands. Strictly speaking, it may be possible to send
request bodies on GET requests. But my experience is that not all
HTTP stacks support this. POST pretty much always works. Using POST
for read-only operations does sacrifice some RESTful design
purity. But this API cares about practicality, not about being
in Roy T. Fielding's REST ivory tower.
There's a chance we may relax this restriction in the future. But
for now, I want to see how far we can get with a POST only API.
Differential Revision: https://phab.mercurial-scm.org/D2837
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Tue, 13 Mar 2018 11:57:43 -0700 |
parents | 3eeb8e138e5c |
children | 6939b6ac960a |
rev | line source |
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1 from __future__ import absolute_import |
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2 |
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3 import unittest |
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4 from mercurial import error, mdiff |
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5 |
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6 # for readability, line numbers are 0-origin |
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7 text1 = ''' |
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18 10 at OLD |
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19 11 at OLD |
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20 '''[1:] # strip initial LF |
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21 |
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22 text2 = ''' |
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23 00 at NEW |
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24 01 at NEW |
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25 02 at NEW, 03 at OLD |
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26 03 at NEW, 04 at OLD |
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27 04 at NEW, 05 at OLD |
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28 05 at NEW, 06 at OLD |
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29 06 at NEW |
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32 09 at NEW |
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33 10 at NEW |
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34 11 at NEW |
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35 '''[1:] # strip initial LF |
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36 |
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37 def filteredblocks(blocks, rangeb): |
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38 """return `rangea` extracted from `blocks` coming from |
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39 `mdiff.blocksinrange` along with the mask of blocks within rangeb. |
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40 """ |
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41 filtered, rangea = mdiff.blocksinrange(blocks, rangeb) |
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42 skipped = [b not in filtered for b in blocks] |
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43 return rangea, skipped |
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44 |
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45 class blocksinrangetests(unittest.TestCase): |
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46 |
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47 def setUp(self): |
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48 self.blocks = list(mdiff.allblocks(text1, text2)) |
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49 assert self.blocks == [ |
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50 ([0, 3, 0, 2], '!'), |
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51 ((3, 7, 2, 6), '='), |
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52 ([7, 12, 6, 12], '!'), |
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53 ((12, 12, 12, 12), '='), |
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54 ], self.blocks |
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55 |
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56 def testWithinEqual(self): |
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57 """linerange within an "=" block""" |
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58 # IDX 0 1 |
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59 # 012345678901 |
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60 # SRC NNOOOONNNNNN (New/Old) |
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61 # ^^ |
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62 linerange2 = (3, 5) |
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63 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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64 self.assertEqual(linerange1, (4, 6)) |
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65 self.assertEqual(skipped, [True, False, True, True]) |
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66 |
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67 def testWithinEqualStrictly(self): |
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68 """linerange matching exactly an "=" block""" |
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69 # IDX 0 1 |
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70 # 012345678901 |
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71 # SRC NNOOOONNNNNN (New/Old) |
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72 # ^^^^ |
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73 linerange2 = (2, 6) |
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74 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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75 self.assertEqual(linerange1, (3, 7)) |
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76 self.assertEqual(skipped, [True, False, True, True]) |
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77 |
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78 def testWithinEqualLowerbound(self): |
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79 """linerange at beginning of an "=" block""" |
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80 # IDX 0 1 |
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81 # 012345678901 |
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82 # SRC NNOOOONNNNNN (New/Old) |
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83 # ^^ |
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84 linerange2 = (2, 4) |
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85 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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86 self.assertEqual(linerange1, (3, 5)) |
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87 self.assertEqual(skipped, [True, False, True, True]) |
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88 |
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89 def testWithinEqualLowerboundOneline(self): |
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90 """oneline-linerange at beginning of an "=" block""" |
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91 # IDX 0 1 |
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92 # 012345678901 |
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93 # SRC NNOOOONNNNNN (New/Old) |
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94 # ^ |
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95 linerange2 = (2, 3) |
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96 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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97 self.assertEqual(linerange1, (3, 4)) |
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98 self.assertEqual(skipped, [True, False, True, True]) |
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99 |
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100 def testWithinEqualUpperbound(self): |
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101 """linerange at end of an "=" block""" |
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102 # IDX 0 1 |
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103 # 012345678901 |
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104 # SRC NNOOOONNNNNN (New/Old) |
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105 # ^^^ |
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106 linerange2 = (3, 6) |
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107 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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108 self.assertEqual(linerange1, (4, 7)) |
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109 self.assertEqual(skipped, [True, False, True, True]) |
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110 |
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111 def testWithinEqualUpperboundOneLine(self): |
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112 """oneline-linerange at end of an "=" block""" |
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113 # IDX 0 1 |
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114 # 012345678901 |
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115 # SRC NNOOOONNNNNN (New/Old) |
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116 # ^ |
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117 linerange2 = (5, 6) |
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118 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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119 self.assertEqual(linerange1, (6, 7)) |
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120 self.assertEqual(skipped, [True, False, True, True]) |
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121 |
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122 def testWithinFirstBlockNeq(self): |
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123 """linerange within the first "!" block""" |
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124 # IDX 0 1 |
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125 # 012345678901 |
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126 # SRC NNOOOONNNNNN (New/Old) |
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127 # ^ |
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128 # | (empty) |
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129 # ^ |
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130 # ^^ |
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131 for linerange2 in [ |
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132 (0, 1), |
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133 (1, 1), |
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134 (1, 2), |
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135 (0, 2), |
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136 ]: |
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137 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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138 self.assertEqual(linerange1, (0, 3)) |
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139 self.assertEqual(skipped, [False, True, True, True]) |
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140 |
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141 def testWithinLastBlockNeq(self): |
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142 """linerange within the last "!" block""" |
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143 # IDX 0 1 |
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144 # 012345678901 |
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145 # SRC NNOOOONNNNNN (New/Old) |
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146 # ^ |
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147 # ^ |
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148 # | (empty) |
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149 # ^^^^^^ |
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150 # ^ |
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151 for linerange2 in [ |
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152 (6, 7), |
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153 (7, 8), |
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154 (7, 7), |
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155 (6, 12), |
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156 (11, 12), |
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157 ]: |
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158 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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159 self.assertEqual(linerange1, (7, 12)) |
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160 self.assertEqual(skipped, [True, True, False, True]) |
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161 |
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162 def testAccrossTwoBlocks(self): |
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163 """linerange accross two blocks""" |
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164 # IDX 0 1 |
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165 # 012345678901 |
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166 # SRC NNOOOONNNNNN (New/Old) |
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167 # ^^^^ |
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168 linerange2 = (1, 5) |
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169 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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170 self.assertEqual(linerange1, (0, 6)) |
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171 self.assertEqual(skipped, [False, False, True, True]) |
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172 |
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173 def testCrossingSeveralBlocks(self): |
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174 """linerange accross three blocks""" |
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175 # IDX 0 1 |
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176 # 012345678901 |
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177 # SRC NNOOOONNNNNN (New/Old) |
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178 # ^^^^^^^ |
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179 linerange2 = (1, 8) |
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180 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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181 self.assertEqual(linerange1, (0, 12)) |
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182 self.assertEqual(skipped, [False, False, False, True]) |
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183 |
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184 def testStartInEqBlock(self): |
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185 """linerange starting in an "=" block""" |
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186 # IDX 0 1 |
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187 # 012345678901 |
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188 # SRC NNOOOONNNNNN (New/Old) |
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189 # ^^^^ |
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190 # ^^^^^^^ |
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191 for linerange2, expectedlinerange1 in [ |
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192 ((5, 9), (6, 12)), |
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193 ((4, 11), (5, 12)), |
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194 ]: |
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195 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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196 self.assertEqual(linerange1, expectedlinerange1) |
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197 self.assertEqual(skipped, [True, False, False, True]) |
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198 |
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199 def testEndInEqBlock(self): |
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200 """linerange ending in an "=" block""" |
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201 # IDX 0 1 |
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202 # 012345678901 |
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203 # SRC NNOOOONNNNNN (New/Old) |
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204 # ^^ |
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205 # ^^^^^ |
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206 for linerange2, expectedlinerange1 in [ |
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207 ((1, 3), (0, 4)), |
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208 ((0, 4), (0, 5)), |
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209 ]: |
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210 linerange1, skipped = filteredblocks(self.blocks, linerange2) |
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211 self.assertEqual(linerange1, expectedlinerange1) |
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212 self.assertEqual(skipped, [False, False, True, True]) |
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213 |
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214 def testOutOfRange(self): |
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215 """linerange exceeding file size""" |
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216 exctype = error.Abort |
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217 for linerange2 in [ |
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218 (0, 34), |
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219 (15, 12), |
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220 ]: |
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221 # Could be `with self.assertRaises(error.Abort)` but python2.6 |
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222 # does not have assertRaises context manager. |
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223 try: |
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224 mdiff.blocksinrange(self.blocks, linerange2) |
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225 except exctype as exc: |
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226 self.assertTrue('line range exceeds file size' in str(exc)) |
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227 else: |
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228 self.fail('%s not raised' % exctype.__name__) |
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229 |
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230 if __name__ == '__main__': |
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231 import silenttestrunner |
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232 silenttestrunner.main(__name__) |