code: def test_float_array():
      ar = np.array(
          [[1.1, 0.0, 1.1], [0.0, 1.1, 0.0], [1.1, 0.0, 1.1]], float
      )
      ar_out = unique_rows(ar)
      desired_ar_out = np.array(
          [[0.0, 1.1, 0.0], [1.1, 0.0, 1.1]], float
      )
      assert_equal(ar_out, desired_ar_out)
  
file_path: scikit-image/skimage/util/tests/test_unique_rows.py
imports: import numpy
  from skimage.util import unique_rows
  from skimage._shared import testing
  from skimage._shared.testing import assert_equal
label_desc: Use image node_id 3 for calling a global function with example usage: test_float_array() without return types