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-rw-r--r--Lib/lib2to3/tests/support.py6
-rw-r--r--Lib/lib2to3/tests/test_parser.py19
2 files changed, 15 insertions, 10 deletions
diff --git a/Lib/lib2to3/tests/support.py b/Lib/lib2to3/tests/support.py
index ae7cfe8..fe084e8 100644
--- a/Lib/lib2to3/tests/support.py
+++ b/Lib/lib2to3/tests/support.py
@@ -15,7 +15,13 @@ 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 = pgen2_driver.load_grammar(grammar_path)
+grammar_no_print_statement = pgen2_driver.load_grammar(grammar_path)
+del grammar_no_print_statement.keywords["print"]
driver = pgen2_driver.Driver(grammar, convert=pytree.convert)
+driver_no_print_statement = pgen2_driver.Driver(
+ grammar_no_print_statement,
+ convert=pytree.convert
+)
def parse_string(string):
return driver.parse_string(reformat(string), debug=True)
diff --git a/Lib/lib2to3/tests/test_parser.py b/Lib/lib2to3/tests/test_parser.py
index ed1ef83..15f5b63 100644
--- a/Lib/lib2to3/tests/test_parser.py
+++ b/Lib/lib2to3/tests/test_parser.py
@@ -8,7 +8,7 @@ test_grammar.py files from both Python 2 and Python 3.
# Testing imports
from . import support
-from .support import driver
+from .support import driver, driver_no_print_statement
from test.support import verbose
# Python imports
@@ -413,8 +413,6 @@ class TestParserIdempotency(support.TestCase):
"""A cut-down version of pytree_idempotency.py."""
- # Issue 13125
- @unittest.expectedFailure
def test_all_project_files(self):
for filepath in support.all_project_files():
with open(filepath, "rb") as fp:
@@ -425,12 +423,13 @@ class TestParserIdempotency(support.TestCase):
source = fp.read()
try:
tree = driver.parse_string(source)
- except ParseError as err:
- if verbose > 0:
- warnings.warn('ParseError on file %s (%s)' % (filepath, err))
- continue
+ except ParseError:
+ try:
+ tree = driver_no_print_statement.parse_string(source)
+ except ParseError as err:
+ self.fail('ParseError on file %s (%s)' % (filepath, err))
new = str(tree)
- x = diff(filepath, new)
+ x = diff(filepath, new, encoding=encoding)
if x:
self.fail("Idempotency failed: %s" % filepath)
@@ -481,9 +480,9 @@ class TestGeneratorExpressions(GrammarTest):
self.validate("set(x for x in [],)")
-def diff(fn, result):
+def diff(fn, result, encoding='utf-8'):
try:
- with open('@', 'w') as f:
+ with open('@', 'w', encoding=encoding, newline='\n') as f:
f.write(str(result))
fn = fn.replace('"', '\\"')
return subprocess.call(['diff', '-u', fn, '@'], stdout=(subprocess.DEVNULL if verbose < 1 else None))