Function __test_empty_es

dali/test/python/test_external_source_dali.py:596–608

()

def __test_empty_es():
    max_batch_size = 16

    @pipeline_def
    def pipeline():
        return fn.external_source(source=lambda: [])

    # Providing an empty batch was legal, but it failed on MakeContiguous node.
    # This checks proper validation in External Source which is the only way that could provide
    # empty batch as input into DALI graph.
    with assert_raises(RuntimeError, glob="*ExternalSource expects non-empty batches*"):
        pipe = pipeline(batch_size=max_batch_size, num_threads=4, device_id=0)
        pipe.run()


def to_tensor_list_gpu(data):