2 * Copyright 2014 Facebook, Inc.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include <folly/Logging.h>
18 #include <gflags/gflags.h>
19 #include <gtest/gtest.h>
22 TEST(LogEveryMs, basic) {
23 std::vector<std::chrono::steady_clock::time_point> hist;
25 while (hist.size() < 10) {
26 FB_LOG_EVERY_MS(INFO, 10)
27 << "test msg " << (hist.push_back(std::chrono::steady_clock::now()),
31 bool atLeastOneIsGood = false;
32 for (int i = 0; i < hist.size() - 1; ++i) {
33 auto delta = hist[i + 1] - hist[i];
34 if (delta > std::chrono::milliseconds(5) &&
35 delta < std::chrono::milliseconds(15)) {
36 atLeastOneIsGood = true;
39 EXPECT_TRUE(atLeastOneIsGood);
42 int main(int argc, char** argv) {
43 testing::InitGoogleTest(&argc, argv);
44 google::ParseCommandLineFlags(&argc, &argv, true);
45 return RUN_ALL_TESTS();