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