text: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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 "utils/time_value_buffer.h"
  
  #include <gtest/gtest.h>
  
  #include "utils/clock.h"
  
  using profiler::Clock;
  using profiler::TimeValue;
  using profiler::TimeValueBuffer;
  
  const int64_t t0 = Clock::s_to_ns(0);
  const int64_t t1 = Clock::s_to_ns(1);
  const int64_t t2 = Clock::s_to_ns(2);
  const int64_t t3 = Clock::s_to_ns(3);
  const int64_t t4 = Clock::s_to_ns(4);
  
  typedef TimeValue<float> TimeFloat;
  typedef TimeValueBuffer<float> TimeFloatBuffer;
  
  TEST(TimeValueBuffer, AddDataMoreThanCapacity) {
    TimeFloatBuffer buffer(2);
    EXPECT_EQ(0u, buffer.GetSize());
    EXPECT_EQ(2u, buffer.capacity());
  
    buffer.Add(10, t1);
    EXPECT_EQ(1u, buffer.GetSize());
    EXPECT_EQ(t1, buffer.GetItem(0).time);
    EXPECT_EQ(10, buffer.GetItem(0).value);
  
    buffer.Add(20, t2);
    EXPECT_EQ(2u, buffer.GetSize());
    EXPECT_EQ(t2, buffer.GetItem(1).time);
    EXPECT_EQ(20, buffer.GetItem(1).value);
  
    buffer.Add(30, t3);
    EXPECT_EQ(2u, buffer.GetSize());
    EXPECT_EQ(t2, buffer.GetItem(0).time);
    EXPECT_EQ(20, buffer.GetItem(0).value);
    EXPECT_EQ(t3, buffer.GetItem(1).time);
    EXPECT_EQ(30, buffer.GetItem(1).value);
  }
  
  TEST(TimeValueBuffer, Empty) {
    TimeFloatBuffer buffer(3);
    std::vector<TimeFloat> items = buffer.GetItems(t1, t2);
    EXPECT_EQ(0u, items.size());
  }
  
  TEST(TimeValueBuffer, DataForQueryTimeRange) {
    TimeFloatBuffer buffer(2);
    buffer.Add(10, t1);
    buffer.Add(20, t2);
  
    std::vector<TimeFloat> items = buffer.GetItems(t1, t2);
    EXPECT_EQ(1u, items.size());
    EXPECT_EQ(t2, items.at(0).time);
    EXPECT_EQ(20, items.at(0).value);
  
    items.clear();
    items = buffer.GetItems(t0, t2);
    EXPECT_EQ(2u, items.size());
    EXPECT_EQ(t1, items.at(0).time);
    EXPECT_EQ(10, items.at(0).value);
    EXPECT_EQ(t2, items.at(1).time);
    EXPECT_EQ(20, items.at(1).value);
  }
  
  TEST(TimeValueBuffer, NoDataForQueryTimeRange) {
    TimeFloatBuffer buffer(2);
    buffer.Add(10, t1);
    buffer.Add(20, t2);
  
    std::vector<TimeFloat> items = buffer.GetItems(t3, t4);
    EXPECT_EQ(0u, items.size());
  }
  
  TEST(TimeValueBuffer, GetValuesRetrievesDataDirectly) {
    TimeFloatBuffer buffer(2);
    buffer.Add(10, t1);
    buffer.Add(20, t2);
  
    std::vector<float> values = buffer.GetValues(t1, t2);
    EXPECT_EQ(1u, values.size());
    EXPECT_EQ(20, values.at(0));
  
    values.clear();
    values = buffer.GetValues(t0, t2);
    EXPECT_EQ(2u, values.size());
    EXPECT_EQ(10, values.at(0));
    EXPECT_EQ(20, values.at(1));
  }
  