code: def test_flat_peak(self):
      image = np.zeros((5, 5), dtype=np.uint8)
      image[1:3, 1:3] = 10
      peaks = peak.peak_local_max(image, min_distance=1)
      assert len(peaks) == 4
  
imports: import itertools
  import numpy
  import pytest
  from numpy.testing import assert_array_almost_equal, assert_array_equal, assert_equal
  from scipy import ndimage
  from skimage._shared._warnings import expected_warnings
  from skimage.feature import peak
label_desc: Use image node_id 6 for calling the TestPeakLocalMax obj's underlying member method code with example usage: obj.test_flat_peak() without return types