"""Support code for test_*.py files"""

# Author: Collin Winter

# Python imports

import unittest

import sys

import os

import os.path

import re

from textwrap import dedent

#sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))

# Local imports

from .. import pytree

from .. import refactor

from ..pgen2 import driver

test_dir = os.path.dirname(__file__)

proj_dir = os.path.normpath(os.path.join(test_dir, ".."))

grammar_path = os.path.join(test_dir, "..", "Grammar.txt")

grammar = driver.load_grammar(grammar_path)

driver = driver.Driver(grammar, convert=pytree.convert)

def parse_string(string):

    return driver.parse_string(reformat(string), debug=True)

# Python 2.3's TestSuite is not iter()-able

if sys.version_info < (2, 4):

    def TestSuite_iter(self):

        return iter(self._tests)

    unittest.TestSuite.__iter__ = TestSuite_iter

def run_all_tests(test_mod=None, tests=None):

    if tests is None:

        tests = unittest.TestLoader().loadTestsFromModule(test_mod)

    unittest.TextTestRunner(verbosity=2).run(tests)

def reformat(string):

    return dedent(string) + "\n\n"

def get_refactorer(fixers=None, options=None):

    """

    A convenience function for creating a RefactoringTool for tests.

    fixers is a list of fixers for the RefactoringTool to use. By default

    "lib2to3.fixes.*" is used. options is an optional dictionary of options to

    be passed to the RefactoringTool.

    """

    if fixers is not None:

        fixers = ["lib2to3.fixes.fix_" + fix for fix in fixers]

    else:

        fixers = refactor.get_fixers_from_package("lib2to3.fixes")

    options = options or {}

    return refactor.RefactoringTool(fixers, options, explicit=True)

def all_project_files():

    for dirpath, dirnames, filenames in os.walk(proj_dir):

        for filename in filenames:

            if filename.endswith(".py"):

                yield os.path.join(dirpath, filename)

TestCase = unittest.TestCase