mirror of https://github.com/python/cpython
126 lines
4.0 KiB
Python
126 lines
4.0 KiB
Python
# Test various flavors of legal and illegal future statements
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import unittest
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from test import support
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import re
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rx = re.compile(r'\((\S+).py, line (\d+)')
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def get_error_location(msg):
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mo = rx.search(str(msg))
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return mo.group(1, 2)
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class FutureTest(unittest.TestCase):
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def test_future1(self):
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with support.CleanImport('future_test1'):
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from test import future_test1
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self.assertEqual(future_test1.result, 6)
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def test_future2(self):
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with support.CleanImport('future_test2'):
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from test import future_test2
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self.assertEqual(future_test2.result, 6)
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def test_future3(self):
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with support.CleanImport('test_future3'):
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from test import test_future3
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def test_badfuture3(self):
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try:
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from test import badsyntax_future3
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future3", '3'))
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else:
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self.fail("expected exception didn't occur")
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def test_badfuture4(self):
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try:
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from test import badsyntax_future4
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future4", '3'))
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else:
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self.fail("expected exception didn't occur")
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def test_badfuture5(self):
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try:
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from test import badsyntax_future5
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future5", '4'))
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else:
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self.fail("expected exception didn't occur")
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def test_badfuture6(self):
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try:
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from test import badsyntax_future6
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future6", '3'))
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else:
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self.fail("expected exception didn't occur")
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def test_badfuture7(self):
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try:
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from test import badsyntax_future7
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future7", '3'))
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else:
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self.fail("expected exception didn't occur")
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def test_badfuture8(self):
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try:
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from test import badsyntax_future8
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future8", '3'))
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else:
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self.fail("expected exception didn't occur")
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def test_badfuture9(self):
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try:
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from test import badsyntax_future9
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future9", '3'))
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else:
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self.fail("expected exception didn't occur")
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def test_badfuture10(self):
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try:
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from test import badsyntax_future10
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except SyntaxError as msg:
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self.assertEqual(get_error_location(msg), ("badsyntax_future10", '3'))
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else:
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self.fail("expected exception didn't occur")
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def test_parserhack(self):
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# test that the parser.c::future_hack function works as expected
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# Note: although this test must pass, it's not testing the original
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# bug as of 2.6 since the with statement is not optional and
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# the parser hack disabled. If a new keyword is introduced in
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# 2.6, change this to refer to the new future import.
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try:
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exec("from __future__ import print_function; print 0")
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except SyntaxError:
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pass
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else:
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self.fail("syntax error didn't occur")
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try:
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exec("from __future__ import (print_function); print 0")
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except SyntaxError:
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pass
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else:
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self.fail("syntax error didn't occur")
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def test_multiple_features(self):
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with support.CleanImport("test.test_future5"):
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from test import test_future5
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def test_unicode_literals_exec(self):
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scope = {}
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exec("from __future__ import unicode_literals; x = ''", {}, scope)
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self.assertIsInstance(scope["x"], str)
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if __name__ == "__main__":
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unittest.main()
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