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      1 
      2 /* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
      3 
      4 Licensed under the Apache License, Version 2.0 (the "License");
      5 you may not use this file except in compliance with the License.
      6 You may obtain a copy of the License at
      7 
      8     http://www.apache.org/licenses/LICENSE-2.0
      9 
     10 Unless required by applicable law or agreed to in writing, software
     11 distributed under the License is distributed on an "AS IS" BASIS,
     12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 See the License for the specific language governing permissions and
     14 limitations under the License.
     15 ==============================================================================*/
     16 #include <gtest/gtest.h>
     17 #include "tensorflow/contrib/lite/builtin_op_data.h"
     18 #include "tensorflow/contrib/lite/interpreter.h"
     19 #include "tensorflow/contrib/lite/kernels/register.h"
     20 #include "tensorflow/contrib/lite/kernels/test_util.h"
     21 #include "tensorflow/contrib/lite/model.h"
     22 
     23 namespace tflite {
     24 namespace {
     25 
     26 using ::testing::ElementsAreArray;
     27 
     28 class TopKV2OpModel : public SingleOpModel {
     29  public:
     30   TopKV2OpModel(std::initializer_list<int> input_shape, TensorType input_type,
     31                 int top_k) {
     32     input_ = AddInput(input_type);
     33     top_k_ = AddInput(TensorType_INT32);
     34     output_indexes_ = AddOutput(TensorType_INT32);
     35     output_values_ = AddOutput(input_type);
     36     SetBuiltinOp(BuiltinOperator_TOPK_V2, BuiltinOptions_TopKV2Options, 0);
     37     BuildInterpreter({input_shape, {1}});
     38     PopulateTensor<int32_t>(top_k_, {top_k});
     39   }
     40 
     41   void SetInputFloat(std::initializer_list<float> data) {
     42     PopulateTensor<float>(input_, data);
     43   }
     44 
     45   void SetInputUInt8(std::initializer_list<uint8> data) {
     46     PopulateTensor<uint8>(input_, data);
     47   }
     48 
     49   void SetInputInt32(std::initializer_list<int32> data) {
     50     PopulateTensor<int32>(input_, data);
     51   }
     52 
     53   void SetInputInt64(std::initializer_list<int64_t> data) {
     54     PopulateTensor<int64_t>(input_, data);
     55   }
     56 
     57   std::vector<int32> GetIndexes() {
     58     return ExtractVector<int32>(output_indexes_);
     59   }
     60 
     61   std::vector<float> GetValuesFloat() {
     62     return ExtractVector<float>(output_values_);
     63   }
     64 
     65   std::vector<uint8> GetValuesUInt8() {
     66     return ExtractVector<uint8>(output_values_);
     67   }
     68 
     69   std::vector<int32> GetValuesInt32() {
     70     return ExtractVector<int32>(output_values_);
     71   }
     72 
     73   std::vector<int64_t> GetValuesInt64() {
     74     return ExtractVector<int64_t>(output_values_);
     75   }
     76 
     77  protected:
     78   int input_;
     79   int top_k_;
     80   int output_indexes_;
     81   int output_values_;
     82 };
     83 
     84 // The test where the tensor dimension is equal to top.
     85 TEST(TopKV2OpTest, EqualFloat) {
     86   TopKV2OpModel m({2, 2}, TensorType_FLOAT32, 2);
     87   m.SetInputFloat({-2.0, 0.2, 0.8, 0.1});
     88   m.Invoke();
     89   EXPECT_THAT(m.GetIndexes(), ElementsAreArray({1, 0, 0, 1}));
     90   EXPECT_THAT(m.GetValuesFloat(),
     91               ElementsAreArray(ArrayFloatNear({0.2, -2.0, 0.8, 0.1})));
     92 }
     93 
     94 // Test when internal dimension is k+1.
     95 TEST(TopKV2OpTest, BorderFloat) {
     96   TopKV2OpModel m({2, 3}, TensorType_FLOAT32, 2);
     97   m.SetInputFloat({-2.0, -3.0, 0.2, 0.8, 0.1, -0.1});
     98   m.Invoke();
     99   EXPECT_THAT(m.GetIndexes(), ElementsAreArray({2, 0, 0, 1}));
    100   EXPECT_THAT(m.GetValuesFloat(),
    101               ElementsAreArray(ArrayFloatNear({0.2, -2.0, 0.8, 0.1})));
    102 }
    103 // Test when internal dimension is higher than k.
    104 TEST(TopKV2OpTest, LargeFloat) {
    105   TopKV2OpModel m({2, 4}, TensorType_FLOAT32, 2);
    106   m.SetInputFloat({-2.0, -3.0, -4.0, 0.2, 0.8, 0.1, -0.1, -0.8});
    107   m.Invoke();
    108   EXPECT_THAT(m.GetIndexes(), ElementsAreArray({3, 0, 0, 1}));
    109   EXPECT_THAT(m.GetValuesFloat(),
    110               ElementsAreArray(ArrayFloatNear({0.2, -2.0, 0.8, 0.1})));
    111 }
    112 
    113 // Test 1D case.
    114 TEST(TopKV2OpTest, VectorFloat) {
    115   TopKV2OpModel m({8}, TensorType_FLOAT32, 2);
    116   m.SetInputFloat({-2.0, -3.0, -4.0, 0.2, 0.8, 0.1, -0.1, -0.8});
    117   m.Invoke();
    118   EXPECT_THAT(m.GetIndexes(), ElementsAreArray({4, 3}));
    119   EXPECT_THAT(m.GetValuesFloat(), ElementsAreArray(ArrayFloatNear({0.8, 0.2})));
    120 }
    121 
    122 // Check that uint8 works.
    123 TEST(TopKV2OpTest, TypeUint8) {
    124   TopKV2OpModel m({2, 3}, TensorType_UINT8, 2);
    125   m.SetInputUInt8({1, 2, 3, 251, 250, 249});
    126   m.Invoke();
    127   EXPECT_THAT(m.GetIndexes(), ElementsAreArray({2, 1, 0, 1}));
    128   EXPECT_THAT(m.GetValuesUInt8(), ElementsAreArray({3, 2, 251, 250}));
    129 }
    130 
    131 // Check that int32 works.
    132 TEST(TopKV2OpTest, TypeInt32) {
    133   TopKV2OpModel m({2, 3}, TensorType_INT32, 2);
    134   m.SetInputInt32({1, 2, 3, 10251, 10250, 10249});
    135   m.Invoke();
    136   EXPECT_THAT(m.GetIndexes(), ElementsAreArray({2, 1, 0, 1}));
    137   EXPECT_THAT(m.GetValuesInt32(), ElementsAreArray({3, 2, 10251, 10250}));
    138 }
    139 
    140 // Check that int64 works.
    141 TEST(TopKV2OpTest, TypeInt64) {
    142   TopKV2OpModel m({2, 3}, TensorType_INT64, 2);
    143   m.SetInputInt64({1, 2, 3, -1, -2, -3});
    144   m.Invoke();
    145   EXPECT_THAT(m.GetIndexes(), ElementsAreArray({2, 1, 0, 1}));
    146   EXPECT_THAT(m.GetValuesInt64(), ElementsAreArray({3, 2, -1, -2}));
    147 }
    148 }  // namespace
    149 }  // namespace tflite
    150 
    151 int main(int argc, char** argv) {
    152   ::tflite::LogToStderr();
    153   ::testing::InitGoogleTest(&argc, argv);
    154   return RUN_ALL_TESTS();
    155 }
    156