unittests/Support/TimerTest.cpp

   1 //===- unittests/TimerTest.cpp - Timer tests ------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/Support/Timer.h"
  11 #include "gtest/gtest.h"
  12 #include <chrono>
  13 #include <thread>
  14
  15 using namespace llvm;
  16
  17 namespace {
  18
  19 TEST(Timer, Additivity) {
  20   Timer T1("T1");
  21
  22   EXPECT_TRUE(T1.isInitialized());
  23
  24   T1.startTimer();
  25   T1.stopTimer();
  26   auto TR1 = T1.getTotalTime();
  27
  28   T1.startTimer();
  29   std::this_thread::sleep_for(std::chrono::milliseconds(1));
  30   T1.stopTimer();
  31   auto TR2 = T1.getTotalTime();
  32
  33   EXPECT_TRUE(TR1 < TR2);
  34 }
  35
  36 TEST(Timer, CheckIfTriggered) {
  37   Timer T1("T1");
  38
  39   EXPECT_FALSE(T1.hasTriggered());
  40   T1.startTimer();
  41   EXPECT_TRUE(T1.hasTriggered());
  42   T1.stopTimer();
  43   EXPECT_TRUE(T1.hasTriggered());
  44
  45   T1.clear();
  46   EXPECT_FALSE(T1.hasTriggered());
  47 }
  48
  49 } // end anon namespace