Lib/test/test_syntax.py

   1 import re
   2 import unittest
   3
   4 from test import test_support
   5
   6 class SyntaxTestCase(unittest.TestCase):
   7
   8     def _check_error(self, code, errtext,
   9                      filename="<testcase>", mode="exec"):
  10         """Check that compiling code raises SyntaxError with errtext.
  11
  12         errtest is a regular expression that must be present in the
  13         test of the exception raised.
  14         """
  15         try:
  16             compile(code, filename, mode)
  17         except SyntaxError, err:
  18             mo = re.search(errtext, str(err))
  19             if mo is None:
  20                 self.fail("SyntaxError did not contain '%s'" % `errtext`)
  21         else:
  22             self.fail("compile() did not raise SyntaxError")
  23
  24     def test_assign_call(self):
  25         self._check_error("f() = 1", "assign")
  26
  27     def test_assign_del(self):
  28         self._check_error("del f()", "delete")
  29
  30 def test_main():
  31     test_support.run_unittest(SyntaxTestCase)
  32
  33 if __name__ == "__main__":
  34     test_main()