Lib/test/test_pkg.py

   1 # Test packages (dotted-name import)
   2
   3 import sys, os, tempfile, traceback
   4 from os import mkdir, rmdir, extsep          # Can't test if these fail
   5 del mkdir, rmdir
   6 from test.test_support import verify, verbose, TestFailed
   7
   8 # Helpers to create and destroy hierarchies.
   9
  10 def mkhier(root, descr):
  11     if not os.path.isdir(root):
  12         mkdir(root)
  13     for name, contents in descr:
  14         comps = name.split()
  15         fullname = root
  16         for c in comps:
  17             fullname = os.path.join(fullname, c)
  18         if contents is None:
  19             mkdir(fullname)
  20         else:
  21             if verbose: print "write", fullname
  22             f = open(fullname, "w")
  23             f.write(contents)
  24             if contents and contents[-1] != '\n':
  25                 f.write('\n')
  26             f.close()
  27
  28 def mkdir(x):
  29     if verbose: print "mkdir", x
  30     os.mkdir(x)
  31
  32 def cleanout(root):
  33     names = os.listdir(root)
  34     for name in names:
  35         fullname = os.path.join(root, name)
  36         if os.path.isdir(fullname) and not os.path.islink(fullname):
  37             cleanout(fullname)
  38         else:
  39             os.remove(fullname)
  40     rmdir(root)
  41
  42 def rmdir(x):
  43     if verbose: print "rmdir", x
  44     os.rmdir(x)
  45
  46 def fixdir(lst):
  47     try:
  48         lst.remove('__builtins__')
  49     except ValueError:
  50         pass
  51     return lst
  52
  53 # Helper to run a test
  54
  55 def runtest(hier, code):
  56     root = tempfile.mkdtemp()
  57     mkhier(root, hier)
  58     savepath = sys.path[:]
  59     fd, fname = tempfile.mkstemp(text=True)
  60     os.write(fd, code)
  61     os.close(fd)
  62     try:
  63         sys.path.insert(0, root)
  64         if verbose: print "sys.path =", sys.path
  65         try:
  66             execfile(fname, globals(), {})
  67         except:
  68             traceback.print_exc(file=sys.stdout)
  69     finally:
  70         sys.path[:] = savepath
  71         os.unlink(fname)
  72         try:
  73             cleanout(root)
  74         except (os.error, IOError):
  75             pass
  76
  77 # Test descriptions
  78
  79 tests = [
  80     ("t1", [("t1", None), ("t1 __init__"+os.extsep+"py", "")], "import t1"),
  81
  82     ("t2", [
  83     ("t2", None),
  84     ("t2 __init__"+os.extsep+"py", "'doc for t2'; print __name__, 'loading'"),
  85     ("t2 sub", None),
  86     ("t2 sub __init__"+os.extsep+"py", ""),
  87     ("t2 sub subsub", None),
  88     ("t2 sub subsub __init__"+os.extsep+"py", "print __name__, 'loading'; spam = 1"),
  89     ],
  90 """
  91 import t2
  92 print t2.__doc__
  93 import t2.sub
  94 import t2.sub.subsub
  95 print t2.__name__, t2.sub.__name__, t2.sub.subsub.__name__
  96 import t2
  97 from t2 import *
  98 print dir()
  99 from t2 import sub
 100 from t2.sub import subsub
 101 from t2.sub.subsub import spam
 102 print sub.__name__, subsub.__name__
 103 print sub.subsub.__name__
 104 print dir()
 105 import t2.sub
 106 import t2.sub.subsub
 107 print t2.__name__, t2.sub.__name__, t2.sub.subsub.__name__
 108 from t2 import *
 109 print dir()
 110 """),
 111
 112     ("t3", [
 113     ("t3", None),
 114     ("t3 __init__"+os.extsep+"py", "print __name__, 'loading'"),
 115     ("t3 sub", None),
 116     ("t3 sub __init__"+os.extsep+"py", ""),
 117     ("t3 sub subsub", None),
 118     ("t3 sub subsub __init__"+os.extsep+"py", "print __name__, 'loading'; spam = 1"),
 119     ],
 120 """
 121 import t3.sub.subsub
 122 print t3.__name__, t3.sub.__name__, t3.sub.subsub.__name__
 123 reload(t3)
 124 reload(t3.sub)
 125 reload(t3.sub.subsub)
 126 """),
 127
 128     ("t4", [
 129     ("t4"+os.extsep+"py", "print 'THIS SHOULD NOT BE PRINTED (t4"+os.extsep+"py)'"),
 130     ("t4", None),
 131     ("t4 __init__"+os.extsep+"py", "print __name__, 'loading'"),
 132     ("t4 sub"+os.extsep+"py", "print 'THIS SHOULD NOT BE PRINTED (sub"+os.extsep+"py)'"),
 133     ("t4 sub", None),
 134     ("t4 sub __init__"+os.extsep+"py", ""),
 135     ("t4 sub subsub"+os.extsep+"py", "print 'THIS SHOULD NOT BE PRINTED (subsub"+os.extsep+"py)'"),
 136     ("t4 sub subsub", None),
 137     ("t4 sub subsub __init__"+os.extsep+"py", "print __name__, 'loading'; spam = 1"),
 138     ],
 139 """
 140 from t4.sub.subsub import *
 141 print "t4.sub.subsub.spam =", spam
 142 """),
 143
 144     ("t5", [
 145     ("t5", None),
 146     ("t5 __init__"+os.extsep+"py", "import t5.foo"),
 147     ("t5 string"+os.extsep+"py", "print __name__, 'loading'; spam = 1"),
 148     ("t5 foo"+os.extsep+"py",
 149      "print __name__, 'loading'; import string; print string.spam"),
 150      ],
 151 """
 152 import t5
 153 from t5 import *
 154 print dir()
 155 import t5
 156 print fixdir(dir(t5))
 157 print fixdir(dir(t5.foo))
 158 print fixdir(dir(t5.string))
 159 """),
 160
 161     ("t6", [
 162     ("t6", None),
 163     ("t6 __init__"+os.extsep+"py", "__all__ = ['spam', 'ham', 'eggs']"),
 164     ("t6 spam"+os.extsep+"py", "print __name__, 'loading'"),
 165     ("t6 ham"+os.extsep+"py", "print __name__, 'loading'"),
 166     ("t6 eggs"+os.extsep+"py", "print __name__, 'loading'"),
 167     ],
 168 """
 169 import t6
 170 print fixdir(dir(t6))
 171 from t6 import *
 172 print fixdir(dir(t6))
 173 print dir()
 174 """),
 175
 176     ("t7", [
 177     ("t7"+os.extsep+"py", "print 'Importing t7"+os.extsep+"py'"),
 178     ("t7", None),
 179     ("t7 __init__"+os.extsep+"py", "print __name__, 'loading'"),
 180     ("t7 sub"+os.extsep+"py", "print 'THIS SHOULD NOT BE PRINTED (sub"+os.extsep+"py)'"),
 181     ("t7 sub", None),
 182     ("t7 sub __init__"+os.extsep+"py", ""),
 183     ("t7 sub subsub"+os.extsep+"py", "print 'THIS SHOULD NOT BE PRINTED (subsub"+os.extsep+"py)'"),
 184     ("t7 sub subsub", None),
 185     ("t7 sub subsub __init__"+os.extsep+"py", "print __name__, 'loading'; spam = 1"),
 186     ],
 187 """
 188 t7, sub, subsub = None, None, None
 189 import t7 as tas
 190 print fixdir(dir(tas))
 191 verify(not t7)
 192 from t7 import sub as subpar
 193 print fixdir(dir(subpar))
 194 verify(not t7 and not sub)
 195 from t7.sub import subsub as subsubsub
 196 print fixdir(dir(subsubsub))
 197 verify(not t7 and not sub and not subsub)
 198 from t7.sub.subsub import spam as ham
 199 print "t7.sub.subsub.spam =", ham
 200 verify(not t7 and not sub and not subsub)
 201 """),
 202
 203 ]
 204
 205 nontests = [
 206     ("x5", [], ("import a" + ".a"*400)),
 207     ("x6", [], ("import a" + ".a"*499)),
 208     ("x7", [], ("import a" + ".a"*500)),
 209     ("x8", [], ("import a" + ".a"*1100)),
 210     ("x9", [], ("import " + "a"*400)),
 211     ("x10", [], ("import " + "a"*500)),
 212     ("x11", [], ("import " + "a"*998)),
 213     ("x12", [], ("import " + "a"*999)),
 214     ("x13", [], ("import " + "a"*999)),
 215     ("x14", [], ("import " + "a"*2000)),
 216 ]
 217
 218 """XXX Things to test
 219
 220 import package without __init__
 221 import package with __init__
 222 __init__ importing submodule
 223 __init__ importing global module
 224 __init__ defining variables
 225 submodule importing other submodule
 226 submodule importing global module
 227 submodule import submodule via global name
 228 from package import submodule
 229 from package import subpackage
 230 from package import variable (defined in __init__)
 231 from package import * (defined in __init__)
 232 """
 233
 234 # Run the tests
 235
 236 args = []
 237 if __name__ == '__main__':
 238     args = sys.argv[1:]
 239     if args and args[0] == '-q':
 240         verbose = 0
 241         del args[0]
 242
 243 for name, hier, code in tests:
 244     if args and name not in args:
 245         print "skipping test", name
 246         continue
 247     print "running test", name
 248     runtest(hier, code)
 249
 250 # Test
 251 import sys
 252 import imp
 253 try:
 254     import sys.imp
 255 except ImportError:
 256     # This is what we expect
 257     pass
 258 else:
 259     raise TestFailed, "No ImportError exception on 'import sys.imp'"