2 * Copyright 2015 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.
18 #include <folly/wangle/concurrent/Codel.h>
19 #include <gtest/gtest.h>
22 TEST(CodelTest, Basic) {
23 using std::chrono::milliseconds;
24 folly::wangle::Codel c;
25 std::this_thread::sleep_for(milliseconds(110));
26 // This interval is overloaded
27 EXPECT_FALSE(c.overloaded(milliseconds(100)));
28 std::this_thread::sleep_for(milliseconds(90));
29 // At least two requests must happen in an interval before they will fail
30 EXPECT_FALSE(c.overloaded(milliseconds(50)));
31 EXPECT_TRUE(c.overloaded(milliseconds(50)));
32 std::this_thread::sleep_for(milliseconds(110));
33 // Previous interval is overloaded, but 2ms isn't enough to fail
34 EXPECT_FALSE(c.overloaded(milliseconds(2)));
35 std::this_thread::sleep_for(milliseconds(90));
36 // 20 ms > target interval * 2
37 EXPECT_TRUE(c.overloaded(milliseconds(20)));