85 lines
3.4 KiB
Java
85 lines
3.4 KiB
Java
/*
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* The MIT License
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* Copyright © 2014-2019 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.circuitbreaker;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import java.rmi.Remote;
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import org.junit.jupiter.api.Test;
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/**
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* Circuit Breaker test
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*/
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public class DefaultCircuitBreakerTest {
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//long timeout, int failureThreshold, long retryTimePeriod
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@Test
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public void testEvaluateState() {
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var circuitBreaker = new DefaultCircuitBreaker(null, 1, 1, 100);
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//Right now, failureCount<failureThreshold, so state should be closed
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assertEquals(circuitBreaker.getState(), "CLOSED");
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circuitBreaker.failureCount = 4;
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circuitBreaker.lastFailureTime = System.nanoTime();
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circuitBreaker.evaluateState();
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//Since failureCount>failureThreshold, and lastFailureTime is nearly equal to current time,
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//state should be half-open
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assertEquals(circuitBreaker.getState(), "HALF_OPEN");
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//Since failureCount>failureThreshold, and lastFailureTime is much lesser current time,
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//state should be open
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circuitBreaker.lastFailureTime = System.nanoTime() - 1000 * 1000 * 1000 * 1000;
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circuitBreaker.evaluateState();
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assertEquals(circuitBreaker.getState(), "OPEN");
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//Now set it back again to closed to test idempotency
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circuitBreaker.failureCount = 0;
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circuitBreaker.evaluateState();
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assertEquals(circuitBreaker.getState(), "CLOSED");
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}
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@Test
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public void testSetStateForBypass() {
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var circuitBreaker = new DefaultCircuitBreaker(null, 1, 1, 2000 * 1000 * 1000);
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//Right now, failureCount<failureThreshold, so state should be closed
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//Bypass it and set it to open
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circuitBreaker.setState(State.OPEN);
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assertEquals(circuitBreaker.getState(), "OPEN");
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}
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@Test
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public void testApiResponses() throws RemoteServiceException {
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RemoteService mockService = new RemoteService() {
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@Override
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public String call() throws RemoteServiceException {
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return "Remote Success";
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}
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};
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var circuitBreaker = new DefaultCircuitBreaker(mockService, 1, 1, 100);
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//Call with the paramater start_time set to huge amount of time in past so that service
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//replies with "Ok". Also, state is CLOSED in start
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var serviceStartTime = System.nanoTime() - 60 * 1000 * 1000 * 1000;
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var response = circuitBreaker.attemptRequest();
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assertEquals(response, "Remote Success");
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}
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}
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