code: def test_types():
      A100 = np.arange(100).reshape((10, 10)).astype(np.uint32)
      assert np.all(
          fullhistogram(A100.astype(np.uint8)) == fullhistogram(A100)
      )
      assert np.all(
          fullhistogram(A100.astype(np.uint16)) == fullhistogram(A100)
      )
      assert np.all(
          fullhistogram(A100.astype(np.uint32)) == fullhistogram(A100)
      )
      assert np.all(
          fullhistogram(A100.astype(np.uint64)) == fullhistogram(A100)
      )
  
file_path: mahotas/mahotas/tests/test_histogram.py
imports: import numpy
  from mahotas.histogram import fullhistogram
  import pytest
label_desc: Use image node_id 4 for calling a global function with example usage: test_types() without return types