text: #
  # Copyright 2016, 2020 Lars Pastewka
  #           2018, 2020 Antoine Sanner
  #           2018, 2020 Michael Röttger
  #           2015-2016 Till Junge
  #
  # ### MIT license
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  #
  
  import numpy as np
  
  from SurfaceTopography import read_container
  
  
  def test_bandwidth_and_unit_suggestion(file_format_examples):
      c, = read_container(f'{file_format_examples}/container1.zip')
      upper_um, lower_um = c.bandwidth(unit='µm')
      upper_mm, lower_mm = c.bandwidth(unit='mm')
      np.testing.assert_almost_equal(upper_um, 0.002)
      np.testing.assert_almost_equal(lower_um, 100)
      np.testing.assert_almost_equal(upper_um, upper_mm * 1000)
      np.testing.assert_almost_equal(lower_um, lower_mm * 1000)
      assert c.suggest_length_unit() == 'µm'
  