code: 
  
  import collections
  
  import caffe2.python.hypothesis_test_util as hu
  import hypothesis.strategies as st
  import numpy as np
  from caffe2.python import core, dyndep, workspace
  from caffe2.quantization.server.dnnlowp_test_utils import check_quantized_results_close
  from hypothesis import given
  
  
  dyndep.InitOpsLibrary("//caffe2/caffe2/quantization/server:dnnlowp_ops")
  workspace.GlobalInit(["caffe2", "--caffe2_omp_num_threads=11"])
  
  
  class DNNLowPDequantizeOpTest(hu.HypothesisTestCase):
      @given(size=st.integers(1024, 2048), is_empty=st.booleans(), **hu.gcs_cpu_only)
      def test_dnnlowp_dequantize(self, size, is_empty, gc, dc):
          if is_empty:
              size = 0
          min_ = -10.0
          max_ = 20.0
          X = (np.random.rand(size) * (max_ - min_) + min_).astype(np.float32)
  
          Output = collections.namedtuple("Output", ["Y", "op_type", "engine"])
          outputs = []
  
          op_type_list = ["Dequantize", "Int8Dequantize"]
          engine = "DNNLOWP"
  
          outputs.append(Output(X, op_type="", engine=""))
  
          for op_type in op_type_list:
              net = core.Net("test_net")
  
              quantize = core.CreateOperator(
                  "Quantize", ["X"], ["X_q"], engine=engine, device_option=gc
              )
              net.Proto().op.extend([quantize])
  
              dequantize = core.CreateOperator(
                  op_type, ["X_q"], ["Y"], engine=engine, device_option=gc
              )
              net.Proto().op.extend([dequantize])
  
              self.ws.create_blob("X").feed(X, device_option=gc)
              self.ws.run(net)
              outputs.append(
                  Output(Y=self.ws.blobs["Y"].fetch(), op_type=op_type, engine=engine)
              )
  
          check_quantized_results_close(outputs)
  
apis: numpy.random.rand