def test_tuple_pairs(self):
d = HeaderCollection.from_environ({'CONTENT_TYPE': 'text/html'})
assert d() == [('Content-Type', 'text/html')]
def test_set_header_immutable(self):
d = HeaderCollection.from_environ({'CONTENT_TYPE': 'text/html'})
with raises(TypeError):
d['test'] = 'test'
with raises(TypeError):
del d['CONTENT_TYPE']
def headers(self):
return HeaderCollection.from_environ(self.environ)
