lldb/unittests/Utility/PredicateTest.cpp

   1 //===-- PredicateTest.cpp -------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lldb/Utility/Predicate.h"
  10 #include "gtest/gtest.h"
  11 #include <thread>
  12
  13 using namespace lldb_private;
  14
  15 TEST(Predicate, WaitForValueEqualTo) {
  16   Predicate<int> P(0);
  17   EXPECT_TRUE(P.WaitForValueEqualTo(0));
  18   EXPECT_FALSE(P.WaitForValueEqualTo(1, std::chrono::milliseconds(10)));
  19
  20   std::thread Setter([&P] {
  21     std::this_thread::sleep_for(std::chrono::milliseconds(100));
  22     P.SetValue(1, eBroadcastAlways);
  23   });
  24   EXPECT_TRUE(P.WaitForValueEqualTo(1));
  25   Setter.join();
  26 }
  27
  28 TEST(Predicate, WaitForValueNotEqualTo) {
  29   Predicate<int> P(0);
  30   EXPECT_EQ(0, P.WaitForValueNotEqualTo(1));
  31   EXPECT_EQ(std::nullopt,
  32             P.WaitForValueNotEqualTo(0, std::chrono::milliseconds(10)));
  33 }