code: def test_builder_floor_eval(self):
      val = np.array(
          [[-1.2, 2, -3.4], [4.5, -5, 6.7]], dtype=np.float32
      )
      v = mb.floor(x=val)
      expected_outputs = np.array(
          [[-2, 2, -4], [4, -5, 6]], dtype=np.float32
      )
  
      assert is_close(expected_outputs, v.val)
  
imports: import scipy
  from coremltools.converters.mil import testing_reqs
  from coremltools.converters.mil.testing_reqs import *
  from .testing_utils import run_compare_builder
label_desc: Use image node_id 15 for calling the TestElementwiseUnary obj's underlying member method code with example usage: obj.test_builder_floor_eval() without return types