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      1 """Support code for test_*.py files"""
      2 # Author: Collin Winter
      3 
      4 # Python imports
      5 import unittest
      6 import sys
      7 import os
      8 import os.path
      9 import re
     10 from textwrap import dedent
     11 
     12 # Local imports
     13 from lib2to3 import pytree, refactor
     14 from lib2to3.pgen2 import driver as pgen2_driver
     15 
     16 test_dir = os.path.dirname(__file__)
     17 proj_dir = os.path.normpath(os.path.join(test_dir, ".."))
     18 grammar_path = os.path.join(test_dir, "..", "Grammar.txt")
     19 grammar = pgen2_driver.load_grammar(grammar_path)
     20 driver = pgen2_driver.Driver(grammar, convert=pytree.convert)
     21 
     22 def parse_string(string):
     23     return driver.parse_string(reformat(string), debug=True)
     24 
     25 def run_all_tests(test_mod=None, tests=None):
     26     if tests is None:
     27         tests = unittest.TestLoader().loadTestsFromModule(test_mod)
     28     unittest.TextTestRunner(verbosity=2).run(tests)
     29 
     30 def reformat(string):
     31     return dedent(string) + u"\n\n"
     32 
     33 def get_refactorer(fixer_pkg="lib2to3", fixers=None, options=None):
     34     """
     35     A convenience function for creating a RefactoringTool for tests.
     36 
     37     fixers is a list of fixers for the RefactoringTool to use. By default
     38     "lib2to3.fixes.*" is used. options is an optional dictionary of options to
     39     be passed to the RefactoringTool.
     40     """
     41     if fixers is not None:
     42         fixers = [fixer_pkg + ".fixes.fix_" + fix for fix in fixers]
     43     else:
     44         fixers = refactor.get_fixers_from_package(fixer_pkg + ".fixes")
     45     options = options or {}
     46     return refactor.RefactoringTool(fixers, options, explicit=True)
     47 
     48 def all_project_files():
     49     for dirpath, dirnames, filenames in os.walk(proj_dir):
     50         for filename in filenames:
     51             if filename.endswith(".py"):
     52                 yield os.path.join(dirpath, filename)
     53 
     54 TestCase = unittest.TestCase
     55