1*61c4878aSAndroid Build Coastguard Worker // Copyright 2022 The Pigweed Authors 2*61c4878aSAndroid Build Coastguard Worker // 3*61c4878aSAndroid Build Coastguard Worker // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4*61c4878aSAndroid Build Coastguard Worker // use this file except in compliance with the License. You may obtain a copy of 5*61c4878aSAndroid Build Coastguard Worker // the License at 6*61c4878aSAndroid Build Coastguard Worker // 7*61c4878aSAndroid Build Coastguard Worker // https://www.apache.org/licenses/LICENSE-2.0 8*61c4878aSAndroid Build Coastguard Worker // 9*61c4878aSAndroid Build Coastguard Worker // Unless required by applicable law or agreed to in writing, software 10*61c4878aSAndroid Build Coastguard Worker // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11*61c4878aSAndroid Build Coastguard Worker // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12*61c4878aSAndroid Build Coastguard Worker // License for the specific language governing permissions and limitations under 13*61c4878aSAndroid Build Coastguard Worker // the License. 14*61c4878aSAndroid Build Coastguard Worker 15*61c4878aSAndroid Build Coastguard Worker #include "pw_perf_test/internal/timer.h" 16*61c4878aSAndroid Build Coastguard Worker 17*61c4878aSAndroid Build Coastguard Worker #include "pw_unit_test/framework.h" 18*61c4878aSAndroid Build Coastguard Worker 19*61c4878aSAndroid Build Coastguard Worker namespace pw::perf_test::internal { 20*61c4878aSAndroid Build Coastguard Worker namespace { 21*61c4878aSAndroid Build Coastguard Worker TEST(TimerTest,DurationIsPositive)22*61c4878aSAndroid Build Coastguard WorkerTEST(TimerTest, DurationIsPositive) { 23*61c4878aSAndroid Build Coastguard Worker ASSERT_TRUE(TimerPrepare()); 24*61c4878aSAndroid Build Coastguard Worker 25*61c4878aSAndroid Build Coastguard Worker Timestamp start = GetCurrentTimestamp(); 26*61c4878aSAndroid Build Coastguard Worker for (volatile int i = 0; i < 1000; i = i + 1) { 27*61c4878aSAndroid Build Coastguard Worker } 28*61c4878aSAndroid Build Coastguard Worker Timestamp end = GetCurrentTimestamp(); 29*61c4878aSAndroid Build Coastguard Worker int64_t duration = GetDuration(start, end); 30*61c4878aSAndroid Build Coastguard Worker EXPECT_GT(duration, 0); 31*61c4878aSAndroid Build Coastguard Worker 32*61c4878aSAndroid Build Coastguard Worker TimerCleanup(); 33*61c4878aSAndroid Build Coastguard Worker } 34*61c4878aSAndroid Build Coastguard Worker 35*61c4878aSAndroid Build Coastguard Worker } // namespace 36*61c4878aSAndroid Build Coastguard Worker } // namespace pw::perf_test::internal 37