old_contents: import numpy as np
  from numpy.testing import assert_allclose
  
  import pywt.data
  
  
  def test_data_aero():
      aero = pywt.data.aero()
  
      ref = np.array([[178, 178, 179],
                      [170, 173, 171],
                      [185, 174, 171]])
  
      assert_allclose(aero[:3, :3], ref)
  
  
  def test_data_ascent():
      ascent = pywt.data.ascent()
  
      ref = np.array([[83, 83, 83],
                      [82, 82, 83],
                      [80, 81, 83]])
  
      assert_allclose(ascent[:3, :3], ref)
  
  
  def test_data_ecg():
      ecg = pywt.data.ecg()
  
      ref = np.array([-86, -87, -87])
  
      assert_allclose(ecg[:3], ref)
  
new_contents: import numpy as np
  from numpy.testing import assert_allclose
  
  import pywt.data
  
  
  def test_data_aero():
      aero = pywt.data.aero()
  
      ref = np.array([[178, 178, 179],
                      [170, 173, 171],
                      [185, 174, 171]])
  
      assert_allclose(aero[:3, :3], ref)
  
  
  def test_data_ascent():
      ascent = pywt.data.ascent()
  
      ref = np.array([[83, 83, 83],
                      [82, 82, 83],
                      [80, 81, 83]])
  
      assert_allclose(ascent[:3, :3], ref)
  
  
  def test_data_camera():
      ascent = pywt.data.camera()
  
      ref = np.array([[156, 157, 160],
                      [156, 157, 159],
                      [158, 157, 156]])
  
      assert_allclose(ascent[:3, :3], ref)
  
  
  def test_data_ecg():
      ecg = pywt.data.ecg()
  
      ref = np.array([-86, -87, -87])
  
      assert_allclose(ecg[:3], ref)
  
subject: test camera image data