Mercurial > piecrust2

annotate tests/mockutil.py @ 33:62c7a97c8340

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author Ludovic Chabant <ludovic@chabant.com>
date Tue, 19 Aug 2014 15:36:28 -0700
parents 43091c9837bf
children e4c345dcf33c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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6
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diff changeset
1 import io
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2 import time
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3 import random
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4 import codecs
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5 import os.path
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6 import functools
3
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7 import mock
6
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8 import yaml
3
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9 from piecrust.app import PieCrust, PieCrustConfiguration
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10
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11
6
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12 resources_path = os.path.abspath(
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13 os.path.join(
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14 os.path.dirname(__file__),
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15 '..', 'piecrust', 'resources'))
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16
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17
3
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18 def get_mock_app(config=None):
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19 app = mock.MagicMock(spec=PieCrust)
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20 app.config = PieCrustConfiguration()
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21 return app
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22
6
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23
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24 def with_mock_fs_app(f):
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25 @functools.wraps(f)
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26 def wrapper(app, *args, **kwargs):
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27 with mock_fs_scope(app):
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28 real_app = app.getApp()
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29 return f(real_app, *args, **kwargs)
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30 return wrapper
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31
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32
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33 class mock_fs(object):
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34 def __init__(self, default_spec=True):
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35 self._root = 'root_%d' % random.randrange(1000)
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36 self._fs = {self._root: {}}
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37 if default_spec:
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38 self.withDir('counter')
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39 self.withFile('kitchen/_content/config.yml',
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40 "site:\n title: Mock Website\n")
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41
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42 def path(self, p):
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43 p = p.replace('\\', '/')
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44 if p in ['/', '', None]:
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45 return '/%s' % self._root
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46 return '/%s/%s' % (self._root, p.lstrip('/'))
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47
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48 def getApp(self):
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49 root_dir = self.path('/kitchen')
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50 return PieCrust(root_dir, cache=False)
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51
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52 def withDir(self, path):
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53 path = path.replace('\\', '/')
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54 cur = self._fs[self._root]
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55 for b in path.split('/'):
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56 if b not in cur:
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57 cur[b] = {}
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58 cur = cur[b]
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59 return self
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60
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61 def withFile(self, path, contents):
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62 path = path.replace('\\', '/')
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63 cur = self._fs[self._root]
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64 bits = path.split('/')
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65 for b in bits[:-1]:
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66 if b not in cur:
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67 cur[b] = {}
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68 cur = cur[b]
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69 cur[bits[-1]] = (contents, {'mtime': time.time()})
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70 return self
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71
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72 def withAsset(self, path, contents):
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73 return self.withFile('kitchen/' + path, contents)
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74
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75 def withAssetDir(self, path):
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76 return self.withDir('kitchen/' + path)
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77
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78 def withConfig(self, config):
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79 return self.withFile(
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80 'kitchen/_content/config.yml',
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81 yaml.dump(config))
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82
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83 def withThemeConfig(self, config):
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84 return self.withFile(
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85 'kitchen/_content/theme/_content/theme_config.yml',
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86 yaml.dump(config))
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87
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88 def withPage(self, url, config=None, contents=None):
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89 config = config or {}
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90 contents = contents or "A test page."
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91 text = "---\n"
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92 text += yaml.dump(config)
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93 text += "---\n"
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94 text += contents
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95
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96 name, ext = os.path.splitext(url)
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97 if not ext:
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98 url += '.md'
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99 url = url.lstrip('/')
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100 return self.withAsset('_content/' + url, text)
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101
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102 def withPageAsset(self, page_url, name, contents=None):
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103 contents = contents or "A test asset."
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104 url_base, ext = os.path.splitext(page_url)
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105 dirname = url_base + '-assets'
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106 return self.withAsset('_content/%s/%s' % (dirname, name),
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107 contents)
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108
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109
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110 class mock_fs_scope(object):
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111 def __init__(self, fs):
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112 self._fs = fs
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113 self._root = None
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114 self._patchers = []
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115 self._originals = {}
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116 if isinstance(fs, mock_fs):
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117 self._fs = fs._fs
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118 self._root = fs._root
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119
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120 def __enter__(self):
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121 self._startMock()
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122 return self
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123
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124 def __exit__(self, type, value, traceback):
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125 self._endMock()
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126
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127 def _startMock(self):
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128 self._createMock('__main__.open', open, self._open, create=True)
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129 self._createMock('codecs.open', codecs.open, self._codecsOpen)
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130 self._createMock('os.listdir', os.listdir, self._listdir)
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131 self._createMock('os.path.isdir', os.path.isdir, self._isdir)
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132 self._createMock('os.path.isfile', os.path.isfile, self._isfile)
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133 self._createMock('os.path.islink', os.path.islink, self._islink)
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134 self._createMock('os.path.getmtime', os.path.getmtime, self._getmtime)
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135 for p in self._patchers:
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136 p.start()
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137
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138 def _endMock(self):
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139 for p in self._patchers:
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140 p.stop()
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141
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142 def _createMock(self, name, orig, func, **kwargs):
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143 self._originals[name] = orig
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144 self._patchers.append(mock.patch(name, func, **kwargs))
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145
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146 def _open(self, path, *args, **kwargs):
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147 path = os.path.normpath(path)
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148 if path.startswith(resources_path):
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149 return self._originals['__main__.open'](path, **kwargs)
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150 e = self._getFsEntry(path)
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151 if e is None:
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152 raise OSError("No such file: %s" % path)
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153 if not isinstance(e, tuple):
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154 raise OSError("'%s' is not a file" % path)
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155 return io.StringIO(e[0])
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156
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157 def _codecsOpen(self, path, *args, **kwargs):
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158 path = os.path.normpath(path)
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159 if path.startswith(resources_path):
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160 return self._originals['codecs.open'](path, *args, **kwargs)
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161 e = self._getFsEntry(path)
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162 if e is None:
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163 raise OSError("No such file: %s" % path)
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164 if not isinstance(e, tuple):
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165 raise OSError("'%s' is not a file" % path)
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166 return io.StringIO(e[0])
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167
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168 def _listdir(self, path):
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169 if not path.startswith('/' + self._root):
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170 return self._originals['os.listdir'](path)
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171 e = self._getFsEntry(path)
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172 if e is None:
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173 raise OSError("No such directory: %s" % path)
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174 if not isinstance(e, dict):
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175 raise OSError("'%s' is not a directory." % path)
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176 return list(e.keys())
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177
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178 def _isdir(self, path):
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179 if not path.startswith('/' + self._root):
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180 return self._originals['os.path.isdir'](path)
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181 e = self._getFsEntry(path)
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182 return e is not None and isinstance(e, dict)
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183
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184 def _isfile(self, path):
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185 if not path.startswith('/' + self._root):
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186 return self._originals['os.path.isfile'](path)
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187 e = self._getFsEntry(path)
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188 return e is not None and isinstance(e, tuple)
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189
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190 def _islink(self, path):
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191 if not path.startswith('/' + self._root):
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192 return self._originals['os.path.islink'](path)
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193 return False
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194
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195 def _getmtime(self, path):
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196 if not path.startswith('/' + self._root):
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197 return self._originals['os.path.getmtime'](path)
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198 e = self._getFsEntry(path)
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199 if e is None:
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200 raise OSError("No such file: %s" % path)
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201 return e[1]['mtime']
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202
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203 def _getFsEntry(self, path):
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204 cur = self._fs
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205 path = path.replace('\\', '/').lstrip('/')
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206 bits = path.split('/')
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207 for p in bits:
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208 try:
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209 cur = cur[p]
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210 except KeyError:
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211 return None
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212 return cur
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213