Lib/test/test_global.py

   1 """Verify that warnings are issued for global statements following use."""
   2
   3 from test.test_support import run_unittest, check_syntax_error
   4 import unittest
   5
   6 import warnings
   7 warnings.filterwarnings("error", module="<test string>")
   8
   9 class GlobalTests(unittest.TestCase):
  10
  11     def test1(self):
  12         prog_text_1 = """\
  13 def wrong1():
  14     a = 1
  15     b = 2
  16     global a
  17     global b
  18 """
  19         check_syntax_error(self, prog_text_1)
  20
  21     def test2(self):
  22         prog_text_2 = """\
  23 def wrong2():
  24     print x
  25     global x
  26 """
  27         check_syntax_error(self, prog_text_2)
  28
  29     def test3(self):
  30         prog_text_3 = """\
  31 def wrong3():
  32     print x
  33     x = 2
  34     global x
  35 """
  36         check_syntax_error(self, prog_text_3)
  37
  38     def test4(self):
  39         prog_text_4 = """\
  40 global x
  41 x = 2
  42 """
  43         # this should work
  44         compile(prog_text_4, "<test string>", "exec")
  45
  46
  47 def test_main():
  48     run_unittest(GlobalTests)
  49
  50 if __name__ == "__main__":
  51     test_main()