/* Copyright 2021 The TensorFlow Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "tensorflow/lite/tools/delegates/delegate_provider.h"

#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "tensorflow/lite/tools/tool_params.h"

namespace tflite {
namespace tools {
namespace {
TEST(ProvidedDelegateListTest, AddAllDelegateParams) {
  ToolParams params;
  ProvidedDelegateList providers(&params);
  providers.AddAllDelegateParams();
  // As we link the test with XNNPACK and nnapi delegate providers, we should
  // expect to havethese two knob parameters.
  EXPECT_TRUE(params.HasParam("use_xnnpack"));
  EXPECT_TRUE(params.HasParam("use_nnapi"));
}

TEST(ProvidedDelegateListTest, AppendCmdlineFlags) {
  std::vector<Flag> flags;

  ToolParams params;
  ProvidedDelegateList providers(&params);
  providers.AddAllDelegateParams();

  providers.AppendCmdlineFlags(flags);
  EXPECT_FALSE(flags.empty());
}

TEST(KernelTestDelegateProvidersTest, CreateAllRankedDelegates) {
#if !defined(__Fuchsia__) && !defined(__s390x__) && \
    !defined(TFLITE_WITHOUT_XNNPACK)
  ToolParams params;
  ProvidedDelegateList providers(&params);
  providers.AddAllDelegateParams();

  // We set the position of "use_xnnpack" to be smaller than that of
  // "use_dummy_delegate" so that the Dummy delegate will be ahead of the
  // XNNPACK delegate in the returned list.
  params.Set<bool>("use_xnnpack", true, 2);
  params.Set<bool>("use_dummy_delegate", true, 1);

  auto delegates = providers.CreateAllRankedDelegates();
  EXPECT_EQ(2, delegates.size());

  EXPECT_EQ("DummyDelegate", delegates.front().provider->GetName());
  EXPECT_EQ(1, delegates.front().rank);
  EXPECT_NE(nullptr, delegates.front().delegate.get());

  EXPECT_EQ("XNNPACK", delegates.back().provider->GetName());
  EXPECT_NE(nullptr, delegates.back().delegate.get());
  EXPECT_EQ(2, delegates.back().rank);
#endif
}
}  // namespace
}  // namespace tools
}  // namespace tflite