/* * Copyright (c) 2008-2018, Hazelcast, Inc. All Rights Reserved. * * 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 com.hazelcast.kubernetes; import com.hazelcast.core.HazelcastException; import org.junit.Test; import java.util.Collections; import java.util.concurrent.Callable; import static com.hazelcast.kubernetes.RetryUtils.BACKOFF_MULTIPLIER; import static com.hazelcast.kubernetes.RetryUtils.INITIAL_BACKOFF_MS; import static java.util.Arrays.asList; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertTrue; import static org.mockito.BDDMockito.given; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.times; import static org.mockito.Mockito.verify; public class RetryUtilsTest { private static final Integer RETRIES = 1; private static final String RESULT = "result string"; private static final String NON_RETRYABLE_KEYWORD = "\"reason\":\"Forbidden\""; private Callable<String> callable = mock(Callable.class); @Test public void retryNoRetries() throws Exception { // given given(callable.call()).willReturn(RESULT); // when String result = RetryUtils.retry(callable, RETRIES, Collections.<String>emptyList()); // then assertEquals(RESULT, result); verify(callable).call(); } @Test public void retryRetriesSuccessful() throws Exception { // given given(callable.call()).willThrow(new RuntimeException()).willReturn(RESULT); // when String result = RetryUtils.retry(callable, RETRIES, Collections.<String>emptyList()); // then assertEquals(RESULT, result); verify(callable, times(2)).call(); } @Test(expected = RuntimeException.class) public void retryRetriesFailed() throws Exception { // given given(callable.call()).willThrow(new RuntimeException()).willThrow(new RuntimeException()).willReturn(RESULT); // when RetryUtils.retry(callable, RETRIES, Collections.<String>emptyList()); // then // throws exception } @Test(expected = HazelcastException.class) public void retryRetriesFailedUncheckedException() throws Exception { // given given(callable.call()).willThrow(new Exception()).willThrow(new Exception()).willReturn(RESULT); // when RetryUtils.retry(callable, RETRIES, Collections.<String>emptyList()); // then // throws exception } @Test public void retryRetriesWaitExponentialBackoff() throws Exception { // given double twoBackoffIntervalsMs = INITIAL_BACKOFF_MS + (BACKOFF_MULTIPLIER * INITIAL_BACKOFF_MS); given(callable.call()).willThrow(new RuntimeException()).willThrow(new RuntimeException()).willReturn(RESULT); // when long startTimeMs = System.currentTimeMillis(); RetryUtils.retry(callable, 5, Collections.<String>emptyList()); long endTimeMs = System.currentTimeMillis(); // then assertTrue(twoBackoffIntervalsMs < (endTimeMs - startTimeMs)); } @Test(expected = NonRetryableException.class) public void retryNonRetryableKeyword() throws Exception { // given given(callable.call()).willThrow(new NonRetryableException()).willReturn(RESULT); // when RetryUtils.retry(callable, RETRIES, asList(NON_RETRYABLE_KEYWORD)); // then // throws exception } @Test(expected = RuntimeException.class) public void retryNonRetryableKeywordOnCause() throws Exception { // given given(callable.call()).willThrow(new RuntimeException(new NonRetryableException())).willReturn(RESULT); // when RetryUtils.retry(callable, RETRIES, asList(NON_RETRYABLE_KEYWORD)); // then // throws exception } private static class NonRetryableException extends RuntimeException { private NonRetryableException() { super(String.format("Message: %s", NON_RETRYABLE_KEYWORD)); } } }