/*
 * Copyright 2014-2017 Real Logic Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.aeron.driver;

import org.junit.Test;

import java.util.stream.IntStream;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.lessThanOrEqualTo;

public class OptimalMulticastDelayGeneratorTest
{
    private static final long MAX_BACKOFF = 60;
    private static final long GROUP_SIZE = 10;
    private static final long GRTT = 10;

    private OptimalMulticastDelayGenerator generator = new OptimalMulticastDelayGenerator(
        MAX_BACKOFF, GROUP_SIZE, GRTT);

    @Test
    public void shouldNotExceedTmaxBackoff()
    {
        IntStream.range(0, 100000).forEach(
            (i) ->
            {
                final double delay = generator.generateNewOptimalDelay();
                assertThat(delay, lessThanOrEqualTo((double)MAX_BACKOFF));
            });
    }
}