def _verify_data(self, pcol, init_size, data_size):
read = pcol | 'read' >> ReadAllFromParquet()
v1 = (
read
| 'get_number' >> Map(lambda x: x['number'])
| 'sum_globally' >> CombineGlobally(sum)
|
'validate_number' >> FlatMap(lambda x: TestParquetIT._sum_verifier(
init_size, data_size, x)))
v2 = (
read
| 'make_pair' >> Map(lambda x: (x['name'], x['number']))
| 'count_per_key' >> Count.PerKey()
|
'validate_name' >> FlatMap(lambda x: TestParquetIT._count_verifier(
init_size, data_size, x)))
_ = ((v1, v2, pcol)
| 'flatten' >> Flatten()
| 'reshuffle' >> Reshuffle()
| 'cleanup' >> Map(lambda x: FileSystems.delete([x])))
def test_aggregator_empty_input(self):
actual = [] | CombineGlobally(max).without_defaults()
self.assertEqual(actual, [])
