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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.energidataservice.internal.retry.strategy;
  14
  15 import static org.hamcrest.CoreMatchers.*;
  16 import static org.hamcrest.MatcherAssert.assertThat;
  17
  18 import java.time.Duration;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.junit.jupiter.api.Test;
  22 import org.openhab.binding.energidataservice.internal.retry.RetryStrategy;
  23
  24 /**
  25  * Tests for {@link ExponentialBackoff}.
  26  *
  27  * @author Jacob Laursen - Initial contribution
  28  */
  29 @NonNullByDefault
  30 public class ExponentialBackoffTest {
  31
  32     @Test
  33     void exponential() {
  34         RetryStrategy retryPolicy = new ExponentialBackoff().withMinimum(Duration.ofSeconds(2)).withJitter(0.0);
  35         for (long i = 2; i <= 256; i *= 2) {
  36             assertThat(retryPolicy.getDuration().toSeconds(), is(i));
  37         }
  38     }
  39 }