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import unittest
import warnings
from webob.response import Response
from webob.util import warn_deprecation
class Test_warn_deprecation(unittest.TestCase):
def setUp(self):
self.oldwarn = warnings.warn
warnings.warn = self._warn
self.warnings = []
def tearDown(self):
warnings.warn = self.oldwarn
del self.warnings
def _callFUT(self, text, version, stacklevel):
return warn_deprecation(text, version, stacklevel)
def _warn(self, text, type, stacklevel=1):
self.warnings.append(locals())
def test_multidict_update_warning(self):
# test warning when duplicate keys are passed
r = Response()
r.headers.update([("Set-Cookie", "a=b"), ("Set-Cookie", "x=y")])
self.assertEqual(len(self.warnings), 1)
deprecation_warning = self.warnings[0]
self.assertEqual(deprecation_warning["type"], UserWarning)
assert "Consider using .extend()" in deprecation_warning["text"]
def test_multidict_update_warning_unnecessary(self):
# no warning on normal operation
r = Response()
r.headers.update([("Set-Cookie", "a=b")])
self.assertEqual(len(self.warnings), 0)
def test_warn_deprecation(self):
v = "1.3.0"
self.assertRaises(DeprecationWarning, warn_deprecation, "foo", v[:3], 1)
def test_warn_deprecation_future_version(self):
v = "9.9.9"
warn_deprecation("foo", v[:3], 1)
self.assertEqual(len(self.warnings), 1)
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