# Copyright 2022 DeepMind Technologies Limited
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Tests for dm_nevis.streams.test_stream."""

from absl.testing import absltest
from absl.testing import parameterized
from dm_nevis.benchmarker.datasets import streams
from dm_nevis.benchmarker.datasets import test_stream
import tensorflow_datasets as tfds


class TestStreamTest(parameterized.TestCase):

  def test_test_stream(self):
    stream = test_stream.TestStream()

    for event in stream.events():
      for key in streams.all_dataset_keys(event):
        dataset = stream.get_dataset_by_key(key)
        ds = dataset.builder_fn(shuffle=False)
        examples = list(tfds.as_numpy(ds))
        self.assertLen(examples, dataset.num_examples)


if __name__ == '__main__':
  absltest.main()
