# Copyright 2022 The sunds Authors.
#
# 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 py_utils."""

from sunds import utils


def test_map_fn():

  @utils.map_fn
  def add_prefix(val, *, prefix):
    return prefix + val

  # Function can still be applied individually
  assert add_prefix('abc', prefix='_') == '_abc'
  # Or within a map
  assert list(map(add_prefix(prefix='_'), ['a', 'b'])) == ['_a', '_b']  # pylint: disable=no-value-for-parameter
