Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_runpy.py @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents 803edf9b1dd9
children 6768b2350c57
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Test the runpy module
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2 import unittest
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3 import os
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4 import os.path
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5 import sys
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6 import tempfile
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7 from test.test_support import verbose, run_unittest, forget
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8 from runpy import _run_code, _run_module_code, run_module
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9
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10 # Note: This module can't safely test _run_module_as_main as it
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11 # runs its tests in the current process, which would mess with the
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12 # real __main__ module (usually test.regrtest)
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13 # See test_cmd_line_script for a test that executes that code path
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14
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15 # Set up the test code and expected results
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16
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17 class RunModuleCodeTest(unittest.TestCase):
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18
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19 expected_result = ["Top level assignment", "Lower level reference"]
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20 test_source = (
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21 "# Check basic code execution\n"
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22 "result = ['Top level assignment']\n"
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23 "def f():\n"
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24 " result.append('Lower level reference')\n"
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25 "f()\n"
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26 "# Check the sys module\n"
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27 "import sys\n"
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28 "run_argv0 = sys.argv[0]\n"
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29 "run_name_in_sys_modules = __name__ in sys.modules\n"
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30 "if run_name_in_sys_modules:\n"
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31 " module_in_sys_modules = globals() is sys.modules[__name__].__dict__\n"
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32 "# Check nested operation\n"
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33 "import runpy\n"
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34 "nested = runpy._run_module_code('x=1\\n', mod_name='<run>')\n"
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35 )
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36
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37 def test_run_code(self):
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38 saved_argv0 = sys.argv[0]
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39 d = _run_code(self.test_source, {})
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40 self.failUnless(d["result"] == self.expected_result)
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41 self.failUnless(d["__name__"] is None)
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42 self.failUnless(d["__file__"] is None)
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43 self.failUnless(d["__loader__"] is None)
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44 self.failUnless(d["__package__"] is None)
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45 self.failUnless(d["run_argv0"] is saved_argv0)
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46 self.failUnless("run_name" not in d)
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47 self.failUnless(sys.argv[0] is saved_argv0)
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48
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49 def test_run_module_code(self):
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50 initial = object()
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51 name = "<Nonsense>"
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52 file = "Some other nonsense"
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53 loader = "Now you're just being silly"
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54 package = '' # Treat as a top level module
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55 d1 = dict(initial=initial)
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56 saved_argv0 = sys.argv[0]
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57 d2 = _run_module_code(self.test_source,
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58 d1,
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59 name,
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60 file,
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61 loader,
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62 package)
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63 self.failUnless("result" not in d1)
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64 self.failUnless(d2["initial"] is initial)
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65 self.failUnless(d2["result"] == self.expected_result)
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66 self.failUnless(d2["nested"]["x"] == 1)
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67 self.failUnless(d2["__name__"] is name)
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68 self.failUnless(d2["run_name_in_sys_modules"])
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69 self.failUnless(d2["module_in_sys_modules"])
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70 self.failUnless(d2["__file__"] is file)
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71 self.failUnless(d2["run_argv0"] is file)
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72 self.failUnless(d2["__loader__"] is loader)
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73 self.failUnless(d2["__package__"] is package)
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74 self.failUnless(sys.argv[0] is saved_argv0)
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75 self.failUnless(name not in sys.modules)
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76
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77
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78 class RunModuleTest(unittest.TestCase):
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79
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80 def expect_import_error(self, mod_name):
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81 try:
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82 run_module(mod_name)
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83 except ImportError:
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84 pass
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85 else:
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86 self.fail("Expected import error for " + mod_name)
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87
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88 def test_invalid_names(self):
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89 # Builtin module
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90 self.expect_import_error("sys")
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91 # Non-existent modules
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92 self.expect_import_error("sys.imp.eric")
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93 self.expect_import_error("os.path.half")
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94 self.expect_import_error("a.bee")
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95 self.expect_import_error(".howard")
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96 self.expect_import_error("..eaten")
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97 # Package
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98 self.expect_import_error("logging")
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99
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100 def test_library_module(self):
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101 run_module("runpy")
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102
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103 def _add_pkg_dir(self, pkg_dir):
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104 os.mkdir(pkg_dir)
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105 pkg_fname = os.path.join(pkg_dir, "__init__"+os.extsep+"py")
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106 pkg_file = open(pkg_fname, "w")
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107 pkg_file.close()
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108 return pkg_fname
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109
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110 def _make_pkg(self, source, depth):
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111 pkg_name = "__runpy_pkg__"
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112 test_fname = "runpy_test"+os.extsep+"py"
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113 pkg_dir = sub_dir = tempfile.mkdtemp()
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114 if verbose: print " Package tree in:", sub_dir
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115 sys.path.insert(0, pkg_dir)
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116 if verbose: print " Updated sys.path:", sys.path[0]
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117 for i in range(depth):
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118 sub_dir = os.path.join(sub_dir, pkg_name)
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119 pkg_fname = self._add_pkg_dir(sub_dir)
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120 if verbose: print " Next level in:", sub_dir
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121 if verbose: print " Created:", pkg_fname
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122 mod_fname = os.path.join(sub_dir, test_fname)
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123 mod_file = open(mod_fname, "w")
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124 mod_file.write(source)
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125 mod_file.close()
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126 if verbose: print " Created:", mod_fname
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127 mod_name = (pkg_name+".")*depth + "runpy_test"
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128 return pkg_dir, mod_fname, mod_name
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129
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130 def _del_pkg(self, top, depth, mod_name):
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131 for entry in list(sys.modules):
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132 if entry.startswith("__runpy_pkg__"):
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133 del sys.modules[entry]
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134 if verbose: print " Removed sys.modules entries"
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135 del sys.path[0]
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136 if verbose: print " Removed sys.path entry"
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137 for root, dirs, files in os.walk(top, topdown=False):
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138 for name in files:
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139 try:
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140 os.remove(os.path.join(root, name))
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141 except OSError, ex:
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142 if verbose: print ex # Persist with cleaning up
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143 for name in dirs:
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144 fullname = os.path.join(root, name)
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145 try:
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146 os.rmdir(fullname)
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147 except OSError, ex:
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148 if verbose: print ex # Persist with cleaning up
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149 try:
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150 os.rmdir(top)
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151 if verbose: print " Removed package tree"
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152 except OSError, ex:
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153 if verbose: print ex # Persist with cleaning up
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154
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155 def _check_module(self, depth):
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156 pkg_dir, mod_fname, mod_name = (
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157 self._make_pkg("x=1\n", depth))
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158 forget(mod_name)
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159 try:
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160 if verbose: print "Running from source:", mod_name
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161 d1 = run_module(mod_name) # Read from source
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162 self.failUnless("x" in d1)
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163 self.failUnless(d1["x"] == 1)
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164 del d1 # Ensure __loader__ entry doesn't keep file open
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165 __import__(mod_name)
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166 os.remove(mod_fname)
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167 if verbose: print "Running from compiled:", mod_name
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168 d2 = run_module(mod_name) # Read from bytecode
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169 self.failUnless("x" in d2)
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170 self.failUnless(d2["x"] == 1)
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171 del d2 # Ensure __loader__ entry doesn't keep file open
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172 finally:
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173 self._del_pkg(pkg_dir, depth, mod_name)
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174 if verbose: print "Module executed successfully"
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175
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176 def _add_relative_modules(self, base_dir, source, depth):
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177 if depth <= 1:
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178 raise ValueError("Relative module test needs depth > 1")
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179 pkg_name = "__runpy_pkg__"
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180 module_dir = base_dir
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181 for i in range(depth):
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182 parent_dir = module_dir
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183 module_dir = os.path.join(module_dir, pkg_name)
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184 # Add sibling module
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185 sibling_fname = os.path.join(module_dir, "sibling"+os.extsep+"py")
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186 sibling_file = open(sibling_fname, "w")
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187 sibling_file.close()
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188 if verbose: print " Added sibling module:", sibling_fname
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189 # Add nephew module
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190 uncle_dir = os.path.join(parent_dir, "uncle")
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191 self._add_pkg_dir(uncle_dir)
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192 if verbose: print " Added uncle package:", uncle_dir
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193 cousin_dir = os.path.join(uncle_dir, "cousin")
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194 self._add_pkg_dir(cousin_dir)
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195 if verbose: print " Added cousin package:", cousin_dir
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196 nephew_fname = os.path.join(cousin_dir, "nephew"+os.extsep+"py")
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197 nephew_file = open(nephew_fname, "w")
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198 nephew_file.close()
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199 if verbose: print " Added nephew module:", nephew_fname
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diff changeset
200
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diff changeset
201 def _check_relative_imports(self, depth, run_name=None):
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202 contents = r"""\
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203 from __future__ import absolute_import
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diff changeset
204 from . import sibling
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205 from ..uncle.cousin import nephew
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206 """
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diff changeset
207 pkg_dir, mod_fname, mod_name = (
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208 self._make_pkg(contents, depth))
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diff changeset
209 try:
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210 self._add_relative_modules(pkg_dir, contents, depth)
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211 pkg_name = mod_name.rpartition('.')[0]
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212 if verbose: print "Running from source:", mod_name
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213 d1 = run_module(mod_name, run_name=run_name) # Read from source
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214 self.failUnless("__package__" in d1)
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215 self.failUnless(d1["__package__"] == pkg_name)
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216 self.failUnless("sibling" in d1)
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217 self.failUnless("nephew" in d1)
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diff changeset
218 del d1 # Ensure __loader__ entry doesn't keep file open
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219 __import__(mod_name)
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220 os.remove(mod_fname)
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diff changeset
221 if verbose: print "Running from compiled:", mod_name
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diff changeset
222 d2 = run_module(mod_name, run_name=run_name) # Read from bytecode
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diff changeset
223 self.failUnless("__package__" in d2)
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224 self.failUnless(d2["__package__"] == pkg_name)
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diff changeset
225 self.failUnless("sibling" in d2)
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diff changeset
226 self.failUnless("nephew" in d2)
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diff changeset
227 del d2 # Ensure __loader__ entry doesn't keep file open
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diff changeset
228 finally:
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diff changeset
229 self._del_pkg(pkg_dir, depth, mod_name)
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230 if verbose: print "Module executed successfully"
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diff changeset
231
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232 def test_run_module(self):
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233 for depth in range(4):
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234 if verbose: print "Testing package depth:", depth
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235 self._check_module(depth)
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236
42337
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diff changeset
237 def test_explicit_relative_import(self):
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diff changeset
238 for depth in range(2, 5):
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diff changeset
239 if verbose: print "Testing relative imports at depth:", depth
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diff changeset
240 self._check_relative_imports(depth)
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diff changeset
241
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diff changeset
242 def test_main_relative_import(self):
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diff changeset
243 for depth in range(2, 5):
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diff changeset
244 if verbose: print "Testing main relative imports at depth:", depth
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245 self._check_relative_imports(depth, "__main__")
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diff changeset
246
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247
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248 def test_main():
37003
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diff changeset
249 run_unittest(RunModuleCodeTest)
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diff changeset
250 run_unittest(RunModuleTest)
36995
f914630f419c Implement PEP 338 which has been marked as accepted by GvR
Nick Coghlan <ncoghlan@gmail.com>
parents:
diff changeset
251
f914630f419c Implement PEP 338 which has been marked as accepted by GvR
Nick Coghlan <ncoghlan@gmail.com>
parents:
diff changeset
252 if __name__ == "__main__":
37003
4f44412e9f6c Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 37001
diff changeset
253 test_main()