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#! /usr/bin/env python
import unittest
from test import support
import __future__
GOOD_SERIALS = ("alpha", "beta", "candidate", "final")
features = __future__.all_feature_names
class FutureTest(unittest.TestCase):
def test_names(self):
# Verify that all_feature_names appears correct.
given_feature_names = features[:]
for name in dir(__future__):
obj = getattr(__future__, name, None)
if obj is not None and isinstance(obj, __future__._Feature):
self.assertTrue(
name in given_feature_names,
"%r should have been in all_feature_names" % name
)
given_feature_names.remove(name)
self.assertEqual(len(given_feature_names), 0,
"all_feature_names has too much: %r" % given_feature_names)
def test_attributes(self):
for feature in features:
value = getattr(__future__, feature)
optional = value.getOptionalRelease()
mandatory = value.getMandatoryRelease()
a = self.assertTrue
e = self.assertEqual
def check(t, name):
a(isinstance(t, tuple), "%s isn't tuple" % name)
e(len(t), 5, "%s isn't 5-tuple" % name)
(major, minor, micro, level, serial) = t
a(isinstance(major, int), "%s major isn't int" % name)
a(isinstance(minor, int), "%s minor isn't int" % name)
a(isinstance(micro, int), "%s micro isn't int" % name)
a(isinstance(level, str),
"%s level isn't string" % name)
a(level in GOOD_SERIALS,
"%s level string has unknown value" % name)
a(isinstance(serial, int), "%s serial isn't int" % name)
check(optional, "optional")
if mandatory is not None:
check(mandatory, "mandatory")
a(optional < mandatory,
"optional not less than mandatory, and mandatory not None")
a(hasattr(value, "compiler_flag"),
"feature is missing a .compiler_flag attr")
# Make sure the compile accepts the flag.
compile("", "<test>", "exec", value.compiler_flag)
a(isinstance(getattr(value, "compiler_flag"), int),
".compiler_flag isn't int")
def test_main():
support.run_unittest(FutureTest)
if __name__ == "__main__":
test_main()
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