def test_iterable_coder(self):
iterable_coder = coders.IterableCoder(coders.VarIntCoder())
# Verify cloud object representation
self.assertEqual(
{
'@type': 'kind:stream',
'is_stream_like': True,
'component_encodings':
[coders.VarIntCoder().as_cloud_object()]
}, iterable_coder.as_cloud_object())
# Test unnested
self.check_coder(iterable_coder, [1], [-1, 0, 100])
# Test nested
self.check_coder(
coders.TupleCoder((coders.VarIntCoder(),
coders.IterableCoder(coders.VarIntCoder()))),
(1, [1, 2, 3]))
def _test_iterable_coder_of_unknown_length(self, count):
def iter_generator(count):
for i in range(count):
yield i
iterable_coder = coders.IterableCoder(coders.VarIntCoder())
self.assertItemsEqual(
list(iter_generator(count)),
iterable_coder.decode(iterable_coder.encode(
iter_generator(count))))
