1  """Verify that warnings are issued for global statements following use."""
       2  
       3  from test.support import check_syntax_error
       4  from test.support.warnings_helper import check_warnings
       5  import unittest
       6  import warnings
       7  
       8  
       9  class ESC[4;38;5;81mGlobalTests(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
      10  
      11      def setUp(self):
      12          self.enterContext(check_warnings())
      13          warnings.filterwarnings("error", module="<test string>")
      14  
      15      def test1(self):
      16          prog_text_1 = """\
      17  def wrong1():
      18      a = 1
      19      b = 2
      20      global a
      21      global b
      22  """
      23          check_syntax_error(self, prog_text_1, lineno=4, offset=5)
      24  
      25      def test2(self):
      26          prog_text_2 = """\
      27  def wrong2():
      28      print(x)
      29      global x
      30  """
      31          check_syntax_error(self, prog_text_2, lineno=3, offset=5)
      32  
      33      def test3(self):
      34          prog_text_3 = """\
      35  def wrong3():
      36      print(x)
      37      x = 2
      38      global x
      39  """
      40          check_syntax_error(self, prog_text_3, lineno=4, offset=5)
      41  
      42      def test4(self):
      43          prog_text_4 = """\
      44  global x
      45  x = 2
      46  """
      47          # this should work
      48          compile(prog_text_4, "<test string>", "exec")
      49  
      50  
      51  def setUpModule():
      52      unittest.enterModuleContext(warnings.catch_warnings())
      53      warnings.filterwarnings("error", module="<test string>")
      54  
      55  
      56  if __name__ == "__main__":
      57      unittest.main()