def test_load_grammar_from_pickle(self):
        # Make a copy of the grammar file in a temp directory we are
        # guaranteed to be able to write to.
        tmpdir = tempfile.mkdtemp()
        try:
            grammar_copy = os.path.join(
                    tmpdir, os.path.basename(support.grammar_path))
            shutil.copy(support.grammar_path, grammar_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)

            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            os.unlink(grammar_copy)  # Only the pickle remains...
            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_pickle(self):
        # Make a copy of the grammar file in a temp directory we are
        # guaranteed to be able to write to.
        tmpdir = tempfile.mkdtemp()
        try:
            grammar_copy = os.path.join(
                    tmpdir, os.path.basename(support.grammar_path))
            shutil.copy(support.grammar_path, grammar_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)

            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            os.unlink(grammar_copy)  # Only the pickle remains...
            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_pickle(self):
        # Make a copy of the grammar file in a temp directory we are
        # guaranteed to be able to write to.
        tmpdir = tempfile.mkdtemp()
        try:
            grammar_copy = os.path.join(
                    tmpdir, os.path.basename(support.grammar_path))
            shutil.copy(support.grammar_path, grammar_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)

            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            os.unlink(grammar_copy)  # Only the pickle remains...
            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_pickle(self):
        # Make a copy of the grammar file in a temp directory we are
        # guaranteed to be able to write to.
        tmpdir = tempfile.mkdtemp()
        try:
            grammar_copy = os.path.join(
                    tmpdir, os.path.basename(support.grammar_path))
            shutil.copy(support.grammar_path, grammar_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)

            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            os.unlink(grammar_copy)  # Only the pickle remains...
            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_pickle(self):
        # Make a copy of the grammar file in a temp directory we are
        # guaranteed to be able to write to.
        tmpdir = tempfile.mkdtemp()
        try:
            grammar_copy = os.path.join(
                    tmpdir, os.path.basename(support.grammar_path))
            shutil.copy(support.grammar_path, grammar_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)

            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            os.unlink(grammar_copy)  # Only the pickle remains...
            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_pickle(self):
        # Make a copy of the grammar file in a temp directory we are
        # guaranteed to be able to write to.
        tmpdir = tempfile.mkdtemp()
        try:
            grammar_copy = os.path.join(
                    tmpdir, os.path.basename(support.grammar_path))
            shutil.copy(support.grammar_path, grammar_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)

            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            os.unlink(grammar_copy)  # Only the pickle remains...
            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_pickle(self):
        # Make a copy of the grammar file in a temp directory we are
        # guaranteed to be able to write to.
        tmpdir = tempfile.mkdtemp()
        try:
            grammar_copy = os.path.join(
                    tmpdir, os.path.basename(support.grammar_path))
            shutil.copy(support.grammar_path, grammar_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)

            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            os.unlink(grammar_copy)  # Only the pickle remains...
            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_subprocess(self):
        tmpdir = tempfile.mkdtemp()
        tmpsubdir = os.path.join(tmpdir, 'subdir')
        try:
            os.mkdir(tmpsubdir)
            grammar_base = os.path.basename(support.grammar_path)
            grammar_copy = os.path.join(tmpdir, grammar_base)
            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
            shutil.copy(support.grammar_path, grammar_copy)
            shutil.copy(support.grammar_path, grammar_sub_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
            pickle_sub_name = pgen2_driver._generate_pickle_name(
                     grammar_sub_copy)
            self.assertNotEqual(pickle_name, pickle_sub_name)

            # Generate a pickle file from this process.
            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            # Generate a new pickle file in a subprocess with a most likely
            # different hash randomization seed.
            sub_env = dict(os.environ)
            sub_env['PYTHONHASHSEED'] = 'random'
            subprocess.check_call(
                    [sys.executable, '-c', """
from lib2to3.pgen2 import driver as pgen2_driver
pgen2_driver.load_grammar(%r, save=True, force=True)
                    """ % (grammar_sub_copy,)],
                    env=sub_env)
            self.assertTrue(os.path.exists(pickle_sub_name))

            with open(pickle_name, 'rb') as pickle_f_1, \
                    open(pickle_sub_name, 'rb') as pickle_f_2:
                self.assertEqual(
                    pickle_f_1.read(), pickle_f_2.read(),
                    msg='Grammar caches generated using different hash seeds'
                    ' were not identical.')
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_subprocess(self):
        tmpdir = tempfile.mkdtemp()
        tmpsubdir = os.path.join(tmpdir, 'subdir')
        try:
            os.mkdir(tmpsubdir)
            grammar_base = os.path.basename(support.grammar_path)
            grammar_copy = os.path.join(tmpdir, grammar_base)
            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
            shutil.copy(support.grammar_path, grammar_copy)
            shutil.copy(support.grammar_path, grammar_sub_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
            pickle_sub_name = pgen2_driver._generate_pickle_name(
                     grammar_sub_copy)
            self.assertNotEqual(pickle_name, pickle_sub_name)

            # Generate a pickle file from this process.
            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            # Generate a new pickle file in a subprocess with a most likely
            # different hash randomization seed.
            sub_env = dict(os.environ)
            sub_env['PYTHONHASHSEED'] = 'random'
            subprocess.check_call(
                    [sys.executable, '-c', """
from lib2to3.pgen2 import driver as pgen2_driver
pgen2_driver.load_grammar(%r, save=True, force=True)
                    """ % (grammar_sub_copy,)],
                    env=sub_env)
            self.assertTrue(os.path.exists(pickle_sub_name))

            with open(pickle_name, 'rb') as pickle_f_1, \
                    open(pickle_sub_name, 'rb') as pickle_f_2:
                self.assertEqual(
                    pickle_f_1.read(), pickle_f_2.read(),
                    msg='Grammar caches generated using different hash seeds'
                    ' were not identical.')
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_subprocess(self):
        tmpdir = tempfile.mkdtemp()
        tmpsubdir = os.path.join(tmpdir, 'subdir')
        try:
            os.mkdir(tmpsubdir)
            grammar_base = os.path.basename(support.grammar_path)
            grammar_copy = os.path.join(tmpdir, grammar_base)
            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
            shutil.copy(support.grammar_path, grammar_copy)
            shutil.copy(support.grammar_path, grammar_sub_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
            pickle_sub_name = pgen2_driver._generate_pickle_name(
                     grammar_sub_copy)
            self.assertNotEqual(pickle_name, pickle_sub_name)

            # Generate a pickle file from this process.
            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            # Generate a new pickle file in a subprocess with a most likely
            # different hash randomization seed.
            sub_env = dict(os.environ)
            sub_env['PYTHONHASHSEED'] = 'random'
            subprocess.check_call(
                    [sys.executable, '-c', """
from lib2to3.pgen2 import driver as pgen2_driver
pgen2_driver.load_grammar(%r, save=True, force=True)
                    """ % (grammar_sub_copy,)],
                    env=sub_env)
            self.assertTrue(os.path.exists(pickle_sub_name))

            with open(pickle_name, 'rb') as pickle_f_1, \
                    open(pickle_sub_name, 'rb') as pickle_f_2:
                self.assertEqual(
                    pickle_f_1.read(), pickle_f_2.read(),
                    msg='Grammar caches generated using different hash seeds'
                    ' were not identical.')
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_subprocess(self):
        tmpdir = tempfile.mkdtemp()
        tmpsubdir = os.path.join(tmpdir, 'subdir')
        try:
            os.mkdir(tmpsubdir)
            grammar_base = os.path.basename(support.grammar_path)
            grammar_copy = os.path.join(tmpdir, grammar_base)
            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
            shutil.copy(support.grammar_path, grammar_copy)
            shutil.copy(support.grammar_path, grammar_sub_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
            pickle_sub_name = pgen2_driver._generate_pickle_name(
                     grammar_sub_copy)
            self.assertNotEqual(pickle_name, pickle_sub_name)

            # Generate a pickle file from this process.
            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            # Generate a new pickle file in a subprocess with a most likely
            # different hash randomization seed.
            sub_env = dict(os.environ)
            sub_env['PYTHONHASHSEED'] = 'random'
            subprocess.check_call(
                    [sys.executable, '-c', """
from lib2to3.pgen2 import driver as pgen2_driver
pgen2_driver.load_grammar(%r, save=True, force=True)
                    """ % (grammar_sub_copy,)],
                    env=sub_env)
            self.assertTrue(os.path.exists(pickle_sub_name))

            with open(pickle_name, 'rb') as pickle_f_1, \
                    open(pickle_sub_name, 'rb') as pickle_f_2:
                self.assertEqual(
                    pickle_f_1.read(), pickle_f_2.read(),
                    msg='Grammar caches generated using different hash seeds'
                    ' were not identical.')
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_subprocess(self):
        tmpdir = tempfile.mkdtemp()
        tmpsubdir = os.path.join(tmpdir, 'subdir')
        try:
            os.mkdir(tmpsubdir)
            grammar_base = os.path.basename(support.grammar_path)
            grammar_copy = os.path.join(tmpdir, grammar_base)
            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
            shutil.copy(support.grammar_path, grammar_copy)
            shutil.copy(support.grammar_path, grammar_sub_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
            pickle_sub_name = pgen2_driver._generate_pickle_name(
                     grammar_sub_copy)
            self.assertNotEqual(pickle_name, pickle_sub_name)

            # Generate a pickle file from this process.
            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            # Generate a new pickle file in a subprocess with a most likely
            # different hash randomization seed.
            sub_env = dict(os.environ)
            sub_env['PYTHONHASHSEED'] = 'random'
            subprocess.check_call(
                    [sys.executable, '-c', """
from lib2to3.pgen2 import driver as pgen2_driver
pgen2_driver.load_grammar(%r, save=True, force=True)
                    """ % (grammar_sub_copy,)],
                    env=sub_env)
            self.assertTrue(os.path.exists(pickle_sub_name))

            with open(pickle_name, 'rb') as pickle_f_1, \
                    open(pickle_sub_name, 'rb') as pickle_f_2:
                self.assertEqual(
                    pickle_f_1.read(), pickle_f_2.read(),
                    msg='Grammar caches generated using different hash seeds'
                    ' were not identical.')
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_subprocess(self):
        tmpdir = tempfile.mkdtemp()
        tmpsubdir = os.path.join(tmpdir, 'subdir')
        try:
            os.mkdir(tmpsubdir)
            grammar_base = os.path.basename(support.grammar_path)
            grammar_copy = os.path.join(tmpdir, grammar_base)
            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
            shutil.copy(support.grammar_path, grammar_copy)
            shutil.copy(support.grammar_path, grammar_sub_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
            pickle_sub_name = pgen2_driver._generate_pickle_name(
                     grammar_sub_copy)
            self.assertNotEqual(pickle_name, pickle_sub_name)

            # Generate a pickle file from this process.
            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            # Generate a new pickle file in a subprocess with a most likely
            # different hash randomization seed.
            sub_env = dict(os.environ)
            sub_env['PYTHONHASHSEED'] = 'random'
            subprocess.check_call(
                    [sys.executable, '-c', """
from lib2to3.pgen2 import driver as pgen2_driver
pgen2_driver.load_grammar(%r, save=True, force=True)
                    """ % (grammar_sub_copy,)],
                    env=sub_env)
            self.assertTrue(os.path.exists(pickle_sub_name))

            with open(pickle_name, 'rb') as pickle_f_1, \
                    open(pickle_sub_name, 'rb') as pickle_f_2:
                self.assertEqual(
                    pickle_f_1.read(), pickle_f_2.read(),
                    msg='Grammar caches generated using different hash seeds'
                    ' were not identical.')
        finally:
            shutil.rmtree(tmpdir) 

def test_load_grammar_from_subprocess(self):
        tmpdir = tempfile.mkdtemp()
        tmpsubdir = os.path.join(tmpdir, 'subdir')
        try:
            os.mkdir(tmpsubdir)
            grammar_base = os.path.basename(support.grammar_path)
            grammar_copy = os.path.join(tmpdir, grammar_base)
            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
            shutil.copy(support.grammar_path, grammar_copy)
            shutil.copy(support.grammar_path, grammar_sub_copy)
            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
            pickle_sub_name = pgen2_driver._generate_pickle_name(
                     grammar_sub_copy)
            self.assertNotEqual(pickle_name, pickle_sub_name)

            # Generate a pickle file from this process.
            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
            self.assertTrue(os.path.exists(pickle_name))

            # Generate a new pickle file in a subprocess with a most likely
            # different hash randomization seed.
            sub_env = dict(os.environ)
            sub_env['PYTHONHASHSEED'] = 'random'
            subprocess.check_call(
                    [sys.executable, '-c', """
from lib2to3.pgen2 import driver as pgen2_driver
pgen2_driver.load_grammar(%r, save=True, force=True)
                    """ % (grammar_sub_copy,)],
                    env=sub_env)
            self.assertTrue(os.path.exists(pickle_sub_name))

            with open(pickle_name, 'rb') as pickle_f_1, \
                    open(pickle_sub_name, 'rb') as pickle_f_2:
                self.assertEqual(
                    pickle_f_1.read(), pickle_f_2.read(),
                    msg='Grammar caches generated using different hash seeds'
                    ' were not identical.')
        finally:
            shutil.rmtree(tmpdir)