text: // Copyright (C) 2020 Intel Corporation
  // SPDX-License-Identifier: Apache-2.0
  //
  
  #include "layer_transformation.hpp"
  
  #include <string>
  #include <sstream>
  #include <memory>
  
  #include <gtest/gtest.h>
  
  #include <transformations/utils/utils.hpp>
  #include <transformations/init_node_info.hpp>
  #include <low_precision/transformer.hpp>
  #include <low_precision/fuse_fake_quantize.hpp>
  #include "ngraph_functions/low_precision_transformations/common/fake_quantize_on_data.hpp"
  #include "ngraph_functions/low_precision_transformations/common/dequantization_operations.hpp"
  
  #include "common_test_utils/ngraph_test_utils.hpp"
  #include "ngraph_functions/low_precision_transformations/fuse_fake_quantize_function.hpp"
  
  #include "simple_low_precision_transformer.hpp"
  
  namespace {
  
  using namespace testing;
  using namespace ngraph;
  using namespace ngraph::pass;
  
  class FuseFakeQuantizeTransformationTestValues {
  public:
      class Actual {
      public:
          std::vector<ngraph::builder::subgraph::FuseFakeQuantizeFunction::Branch> branches;
          ngraph::element::Type precisionFakeQuantizeOnData;
          ngraph::builder::subgraph::FakeQuantizeOnData fakeQuantizeOnData;
      };
  
      class Expected {
      public:
          std::vector<ngraph::builder::subgraph::FuseFakeQuantizeFunction::Branch> branches;
          ngraph::element::Type precisionFakeQuantizeOnData;
          ngraph::builder::subgraph::FakeQuantizeOnData fakeQuantizeOnData;
          ngraph::builder::subgraph::DequantizationOperations dequantization;
      };
  
      ngraph::Shape inputShape;
      ngraph::pass::low_precision::LayerTransformation::Params params;
      Actual actual;
      Expected expected;
  };
  
  class FuseFakeQuantizeWithMultiInputsTransformation : public LayerTransformation, public testing::WithParamInterface<FuseFakeQuantizeTransformationTestValues> {
  public:
      void SetUp() override {
          const FuseFakeQuantizeTransformationTestValues testValues = GetParam();
  
          actualFunction = ngraph::builder::subgraph::FuseFakeQuantizeFunction::get(
              testValues.inputShape,
              testValues.actual.branches,
              testValues.actual.precisionFakeQuantizeOnData,
              testValues.actual.fakeQuantizeOnData);
  
          SimpleLowPrecisionTransformer transformer;
          transformer.add<ngraph::pass::low_precision::FuseFakeQuantizeTransformation, ngraph::opset1::FakeQuantize>(testValues.params);
          transformer.transform(actualFunction);
  
          referenceFunction = ngraph::builder::subgraph::FuseFakeQuantizeFunction::get(
              testValues.inputShape,
              testValues.expected.branches,
              testValues.expected.precisionFakeQuantizeOnData,
              testValues.expected.fakeQuantizeOnData);
      }
  
      static std::string getTestCaseName(testing::TestParamInfo<FuseFakeQuantizeTransformationTestValues> obj) {
          const FuseFakeQuantizeTransformationTestValues testValues = obj.param;
  
          std::ostringstream result;
          result << testValues.params.updatePrecisions << "_" <<
              testValues.actual.branches[0].dequantization << "_" <<
              testValues.actual.branches[1].dequantization << "_" <<
              testValues.actual.precisionFakeQuantizeOnData << "_" <<
              testValues.actual.fakeQuantizeOnData << "_" <<
              testValues.expected.fakeQuantizeOnData << "_" <<
              testValues.expected.dequantization;
          return result.str();
          return result.str();
      }
  };
  
  TEST_P(FuseFakeQuantizeWithMultiInputsTransformation, CompareFunctions) {
      actualFunction->validate_nodes_and_infer_types();
      auto res = compare_functions(referenceFunction, actualFunction, false, true);
      ASSERT_TRUE(res.first) << res.second;
  }
  
  const std::vector<FuseFakeQuantizeTransformationTestValues> testValues = {
      // Multiply
      {
          Shape{1, 3, 16, 16},
          LayerTransformation::createParamsU8I8(),
          {
              {
                  {
                      element::f32,
                      { {}, {}, { 0.01f } },
                      element::f32
                  },
                  {
                      element::f32,
                      { {}, {}, { 0.01f } },
                      element::f32
                  }
              },
              element::f32,
              { 256ul, {}, { 0.f }, { 2.55f }, { 0.f }, { 2.55f } }
          },
          {
              {
                  {
                      element::f32,
                      { {}, {}, { 0.01f } },
                      element::f32
                  },
                  {
                      element::f32,
                      { {}, {}, { 0.01f } },
                      element::f32
                  }
              },
              element::f32,
              { 256ul, {}, { 0.f }, { 255.f }, { 0.f }, { 2.55f } }
          }
      }
  };
  
  INSTANTIATE_TEST_CASE_P(
      LPT,
      FuseFakeQuantizeWithMultiInputsTransformation,
      ::testing::ValuesIn(testValues),
      FuseFakeQuantizeWithMultiInputsTransformation::getTestCaseName);
  
  } // namespace
  