annotate planemo/lib/python3.7/site-packages/importlib_metadata/tests/fixtures.py @ 1:56ad4e20f292 draft

"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1
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1 from __future__ import unicode_literals
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2
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3 import os
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4 import sys
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5 import shutil
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6 import tempfile
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7 import textwrap
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8 import test.support
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9
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10 from .._compat import pathlib, contextlib
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11
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12
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13 __metaclass__ = type
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14
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15
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16 @contextlib.contextmanager
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17 def tempdir():
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18 tmpdir = tempfile.mkdtemp()
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19 try:
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20 yield pathlib.Path(tmpdir)
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21 finally:
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22 shutil.rmtree(tmpdir)
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23
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24
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25 @contextlib.contextmanager
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26 def save_cwd():
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27 orig = os.getcwd()
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28 try:
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29 yield
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30 finally:
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31 os.chdir(orig)
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32
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33
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34 @contextlib.contextmanager
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35 def tempdir_as_cwd():
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36 with tempdir() as tmp:
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37 with save_cwd():
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38 os.chdir(str(tmp))
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39 yield tmp
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40
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41
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42 @contextlib.contextmanager
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43 def install_finder(finder):
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44 sys.meta_path.append(finder)
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45 try:
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46 yield
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47 finally:
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48 sys.meta_path.remove(finder)
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49
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50
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51 class Fixtures:
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52 def setUp(self):
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53 self.fixtures = contextlib.ExitStack()
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54 self.addCleanup(self.fixtures.close)
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55
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56
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57 class SiteDir(Fixtures):
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58 def setUp(self):
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59 super(SiteDir, self).setUp()
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60 self.site_dir = self.fixtures.enter_context(tempdir())
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61
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62
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63 class OnSysPath(Fixtures):
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64 @staticmethod
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65 @contextlib.contextmanager
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66 def add_sys_path(dir):
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67 sys.path[:0] = [str(dir)]
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68 try:
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69 yield
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70 finally:
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71 sys.path.remove(str(dir))
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72
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73 def setUp(self):
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74 super(OnSysPath, self).setUp()
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75 self.fixtures.enter_context(self.add_sys_path(self.site_dir))
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76
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77
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78 class DistInfoPkg(OnSysPath, SiteDir):
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79 files = {
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80 "distinfo_pkg-1.0.0.dist-info": {
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81 "METADATA": """
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82 Name: distinfo-pkg
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83 Author: Steven Ma
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84 Version: 1.0.0
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85 Requires-Dist: wheel >= 1.0
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86 Requires-Dist: pytest; extra == 'test'
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87 """,
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88 "RECORD": "mod.py,sha256=abc,20\n",
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89 "entry_points.txt": """
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90 [entries]
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91 main = mod:main
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92 ns:sub = mod:main
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93 """
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94 },
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95 "mod.py": """
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96 def main():
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97 print("hello world")
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98 """,
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99 }
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100
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101 def setUp(self):
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102 super(DistInfoPkg, self).setUp()
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103 build_files(DistInfoPkg.files, self.site_dir)
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104
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105
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106 class DistInfoPkgOffPath(SiteDir):
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107 def setUp(self):
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108 super(DistInfoPkgOffPath, self).setUp()
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109 build_files(DistInfoPkg.files, self.site_dir)
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110
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111
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112 class EggInfoPkg(OnSysPath, SiteDir):
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113 files = {
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114 "egginfo_pkg.egg-info": {
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115 "PKG-INFO": """
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116 Name: egginfo-pkg
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117 Author: Steven Ma
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118 License: Unknown
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119 Version: 1.0.0
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120 Classifier: Intended Audience :: Developers
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121 Classifier: Topic :: Software Development :: Libraries
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122 """,
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123 "SOURCES.txt": """
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124 mod.py
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125 egginfo_pkg.egg-info/top_level.txt
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126 """,
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127 "entry_points.txt": """
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128 [entries]
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129 main = mod:main
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130 """,
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131 "requires.txt": """
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132 wheel >= 1.0; python_version >= "2.7"
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133 [test]
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134 pytest
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135 """,
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136 "top_level.txt": "mod\n"
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137 },
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138 "mod.py": """
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139 def main():
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140 print("hello world")
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141 """,
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142 }
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143
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144 def setUp(self):
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145 super(EggInfoPkg, self).setUp()
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146 build_files(EggInfoPkg.files, prefix=self.site_dir)
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147
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148
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149 class EggInfoFile(OnSysPath, SiteDir):
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150 files = {
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151 "egginfo_file.egg-info": """
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152 Metadata-Version: 1.0
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153 Name: egginfo_file
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154 Version: 0.1
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155 Summary: An example package
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156 Home-page: www.example.com
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157 Author: Eric Haffa-Vee
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158 Author-email: eric@example.coms
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159 License: UNKNOWN
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160 Description: UNKNOWN
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161 Platform: UNKNOWN
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162 """,
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163 }
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164
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165 def setUp(self):
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166 super(EggInfoFile, self).setUp()
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167 build_files(EggInfoFile.files, prefix=self.site_dir)
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168
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169
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170 class LocalPackage:
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171 files = {
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172 "setup.py": """
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173 import setuptools
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174 setuptools.setup(name="local-pkg", version="2.0.1")
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175 """,
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176 }
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177
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178 def setUp(self):
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179 self.fixtures = contextlib.ExitStack()
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180 self.addCleanup(self.fixtures.close)
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181 self.fixtures.enter_context(tempdir_as_cwd())
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182 build_files(self.files)
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183
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184
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185 def build_files(file_defs, prefix=pathlib.Path()):
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186 """Build a set of files/directories, as described by the
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187
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188 file_defs dictionary. Each key/value pair in the dictionary is
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189 interpreted as a filename/contents pair. If the contents value is a
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190 dictionary, a directory is created, and the dictionary interpreted
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191 as the files within it, recursively.
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192
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193 For example:
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194
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195 {"README.txt": "A README file",
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196 "foo": {
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197 "__init__.py": "",
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198 "bar": {
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199 "__init__.py": "",
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200 },
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201 "baz.py": "# Some code",
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202 }
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203 }
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204 """
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205 for name, contents in file_defs.items():
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206 full_name = prefix / name
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207 if isinstance(contents, dict):
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208 full_name.mkdir()
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209 build_files(contents, prefix=full_name)
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210 else:
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211 if isinstance(contents, bytes):
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212 with full_name.open('wb') as f:
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213 f.write(contents)
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214 else:
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215 with full_name.open('w') as f:
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216 f.write(DALS(contents))
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217
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218
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219 class FileBuilder:
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220 def unicode_filename(self):
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221 return test.support.FS_NONASCII or \
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222 self.skip("File system does not support non-ascii.")
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223
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224
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225 def DALS(str):
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226 "Dedent and left-strip"
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227 return textwrap.dedent(str).lstrip()
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228
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229
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230 class NullFinder:
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231 def find_module(self, name):
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232 pass