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RetryPolicyBuilderTest.java
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RetryPolicyBuilderTest.java
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/*
* Copyright 2016 the original author or authors.
*
* 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 dev.failsafe;
import dev.failsafe.testing.Asserts;
import org.testng.annotations.Test;
import java.time.Duration;
import java.time.temporal.ChronoUnit;
import static org.testng.Assert.*;
@Test
public class RetryPolicyBuilderTest extends Asserts {
public void shouldRequireValidDelay() {
assertThrows(() -> RetryPolicy.builder().withDelay(null), NullPointerException.class);
assertThrows(() -> RetryPolicy.builder().withMaxDuration(Duration.ofMillis(1)).withDelay(Duration.ofMillis(100)),
IllegalStateException.class);
assertThrows(() -> RetryPolicy.builder().withDelay(Duration.ofMillis(-1)), IllegalArgumentException.class);
assertThrows(() -> RetryPolicy.builder().withJitter(Duration.ofMillis(7)).withDelay(Duration.ofMillis(5)),
IllegalStateException.class);
}
public void shouldRequireValidBackoff() {
assertThrows(() -> RetryPolicy.builder().withBackoff(0, 0, null), NullPointerException.class);
assertThrows(() -> RetryPolicy.builder().withBackoff(-3, 10, ChronoUnit.MILLIS), IllegalArgumentException.class);
assertThrows(() -> RetryPolicy.builder().withBackoff(100, 10, ChronoUnit.MILLIS), IllegalArgumentException.class);
assertThrows(() -> RetryPolicy.builder().withBackoff(5, 10, ChronoUnit.MILLIS, .5), IllegalArgumentException.class);
assertThrows(
() -> RetryPolicy.builder().withMaxDuration(Duration.ofMillis(1)).withBackoff(100, 120, ChronoUnit.MILLIS),
IllegalStateException.class);
assertThrows(() -> RetryPolicy.builder()
.withJitter(Duration.ofMillis(7))
.withBackoff(Duration.ofMillis(5), Duration.ofMillis(10)), IllegalStateException.class);
}
public void shouldRequireValidRandomDelay() {
assertThrows(() -> RetryPolicy.builder().withDelay(null, null), NullPointerException.class);
assertThrows(() -> RetryPolicy.builder().withDelay(Duration.ZERO, Duration.ZERO), IllegalArgumentException.class);
assertThrows(() -> RetryPolicy.builder().withDelay(Duration.ofMillis(10), Duration.ofMillis(5)),
IllegalArgumentException.class);
assertThrows(() -> RetryPolicy.builder()
.withMaxDuration(Duration.ofMillis(7))
.withDelay(Duration.ofMillis(5), Duration.ofMillis(10)), IllegalStateException.class);
assertThrows(() -> RetryPolicy.builder()
.withJitter(Duration.ofMillis(7))
.withDelay(Duration.ofMillis(5), Duration.ofMillis(10)), IllegalStateException.class);
}
public void shouldRequireValidMaxRetries() {
assertThrows(() -> RetryPolicy.builder().withMaxRetries(-4), IllegalArgumentException.class);
}
public void shouldRequireValidMaxDuration() {
assertThrows(() -> RetryPolicy.builder().withDelay(Duration.ofMillis(10)).withMaxDuration(Duration.ofMillis(5)),
IllegalStateException.class);
assertThrows(() -> RetryPolicy.builder()
.withDelay(Duration.ofMillis(1), Duration.ofMillis(10))
.withMaxDuration(Duration.ofMillis(5)), IllegalStateException.class);
}
public void shouldConfigureRandomDelay() {
RetryPolicy<Object> rp = RetryPolicy.builder().withDelay(1, 10, ChronoUnit.NANOS).build();
assertEquals(rp.getConfig().getDelayMin().toNanos(), 1);
assertEquals(rp.getConfig().getDelayMax().toNanos(), 10);
}
public void testConfigureMaxAttempts() {
assertEquals(RetryPolicy.builder().withMaxRetries(-1).build().getConfig().getMaxAttempts(), -1);
assertEquals(RetryPolicy.builder().withMaxRetries(0).build().getConfig().getMaxAttempts(), 1);
assertEquals(RetryPolicy.builder().withMaxRetries(1).build().getConfig().getMaxAttempts(), 2);
}
public void shouldReplaceWithFixedDelay() {
// Replace backoff with fixed delay
RetryPolicyBuilder<Object> rpb = RetryPolicy.builder()
.withBackoff(Duration.ofMillis(1), Duration.ofMillis(10))
.withDelay(Duration.ofMillis(5));
assertEquals(rpb.config.delay, Duration.ofMillis(5));
assertNull(rpb.config.maxDelay);
// Replace random with fixed delay
rpb = RetryPolicy.builder().withDelay(Duration.ofMillis(1), Duration.ofMillis(10)).withDelay(Duration.ofMillis(5));
assertEquals(rpb.config.delay, Duration.ofMillis(5));
assertNull(rpb.config.delayMin);
assertNull(rpb.config.delayMax);
}
public void shouldReplaceWithBackoffDelay() {
// Replace fixed with backoff delay
RetryPolicyBuilder<Object> rpb = RetryPolicy.builder()
.withDelay(Duration.ofMillis(5))
.withBackoff(Duration.ofMillis(1), Duration.ofMillis(10));
assertEquals(rpb.config.delay, Duration.ofMillis(1));
// Replace random with backoff delay
rpb = RetryPolicy.builder()
.withDelay(Duration.ofMillis(5), Duration.ofMillis(15))
.withBackoff(Duration.ofMillis(1), Duration.ofMillis(10));
assertEquals(rpb.config.delay, Duration.ofMillis(1));
assertNull(rpb.config.delayMin);
assertNull(rpb.config.delayMax);
}
public void shouldReplaceWithRandomDelay() {
// Replace fixed with random delay
RetryPolicyBuilder<Object> rpb = RetryPolicy.builder()
.withDelay(Duration.ofMillis(5))
.withDelay(Duration.ofMillis(1), Duration.ofMillis(10));
assertEquals(rpb.config.delay, Duration.ZERO);
// Replace backoff with random delay
rpb = RetryPolicy.builder()
.withBackoff(Duration.ofMillis(5), Duration.ofMillis(15))
.withDelay(Duration.ofMillis(1), Duration.ofMillis(10));
assertEquals(rpb.config.delay, Duration.ZERO);
assertNull(rpb.config.maxDelay);
}
public void shouldReplaceWithJitterDuration() {
RetryPolicyBuilder<Object> rpb = RetryPolicy.builder().withJitter(.2).withJitter(Duration.ofMillis(10));
assertEquals(rpb.config.jitterFactor, 0.0);
assertEquals(rpb.config.jitter, Duration.ofMillis(10));
}
public void shouldReplaceWithJitterFactor() {
RetryPolicyBuilder<Object> rpb = RetryPolicy.builder().withJitter(Duration.ofMillis(10)).withJitter(.2);
assertNull(rpb.config.jitter);
assertEquals(rpb.config.jitterFactor, .2);
}
public void shouldCreateBuilderFromExistingConfig() {
RetryPolicyConfig<Object> initialConfig = RetryPolicy.builder()
.withBackoff(Duration.ofMillis(10), Duration.ofMillis(100))
.withMaxRetries(5)
.onFailedAttempt(e -> {
})
.withJitter(Duration.ofMillis(5)).config;
RetryPolicyConfig<Object> newConfig = RetryPolicy.builder(initialConfig).config;
assertEquals(newConfig.delay, Duration.ofMillis(10));
assertEquals(newConfig.maxDelay, Duration.ofMillis(100));
assertNotNull(newConfig.failedAttemptListener);
assertEquals(newConfig.jitter, Duration.ofMillis(5));
}
}