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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      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 
     17 #include "gtest/gtest.h"
     18 
     19 #include "chre/platform/slpi/smgr/platform_sensor_util.h"
     20 
     21 using chre::intervalToSmgrSamplingRate;
     22 using chre::intervalToSmgrQ16ReportRate;
     23 using chre::Milliseconds;
     24 using chre::Nanoseconds;
     25 using chre::Seconds;
     26 
     27 TEST(SmgrSamplingRateTest, Zero) {
     28   uint16_t rate = intervalToSmgrSamplingRate(Nanoseconds(0));
     29   EXPECT_EQ(rate, 0);
     30 }
     31 
     32 TEST(SmgrSamplingRateTest, FiftyHertz) {
     33   constexpr Nanoseconds kFiftyHertzInterval = Milliseconds(20);
     34   uint16_t rate = intervalToSmgrSamplingRate(kFiftyHertzInterval);
     35   EXPECT_EQ(rate, 50);
     36 }
     37 
     38 TEST(SmgrSamplingRateTest, ZeroPointFiveHertz) {
     39   constexpr Nanoseconds kZeroPointFiveHertzInterval = Seconds(2);
     40   uint16_t rate = intervalToSmgrSamplingRate(kZeroPointFiveHertzInterval);
     41   EXPECT_EQ(rate, 2000);
     42 }
     43 
     44 TEST(SmgrSamplingRateTest, MinisculeRate) {
     45   constexpr Nanoseconds kOneNanoHzInterval = Seconds(1e9);
     46   uint16_t rate = intervalToSmgrSamplingRate(kOneNanoHzInterval);
     47   EXPECT_EQ(rate, INT16_MAX);
     48 }
     49 
     50 TEST(SmgrSamplingRateTest, HugeRate) {
     51   constexpr Nanoseconds kTwentyMHzInterval = Nanoseconds(50);
     52   uint16_t rate = intervalToSmgrSamplingRate(kTwentyMHzInterval);
     53   EXPECT_EQ(rate, 1000);  // Should clamp to inversion point
     54 }
     55 
     56 TEST(SmgrQ16ReportRateTest, Zero) {
     57   uint32_t rate = intervalToSmgrQ16ReportRate(Nanoseconds(0));
     58   EXPECT_EQ(rate, INT32_MAX);
     59 }
     60 
     61 TEST(SmgrQ16ReportRateTest, FiftyHertz) {
     62   constexpr Nanoseconds kTenHertzInterval = Milliseconds(20);
     63   uint32_t rate = intervalToSmgrQ16ReportRate(kTenHertzInterval);
     64   EXPECT_EQ(rate, 0x10000 * 50);
     65 }
     66 
     67 TEST(SmgrQ16ReportRateTest, ZeroPointFiveHertz) {
     68   constexpr Nanoseconds kZeroPointFiveHertzInterval = Seconds(2);
     69   uint32_t rate = intervalToSmgrQ16ReportRate(kZeroPointFiveHertzInterval);
     70   EXPECT_EQ(rate, 0x10000 / 2);
     71 }
     72 
     73 TEST(SmgrQ16ReportRateTest, OneNanosecond) {
     74   uint32_t rate = intervalToSmgrQ16ReportRate(Nanoseconds(1));
     75   EXPECT_EQ(rate, INT32_MAX);
     76 }
     77