content: /*
   * Copyright 2013-2023 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
   *
   *      https://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.alibaba.cloud.circuitbreaker.sentinel;
  
  import java.util.ArrayList;
  import java.util.Collections;
  
  import com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule;
  import com.alibaba.csp.sentinel.slots.block.degrade.DegradeRuleManager;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Test;
  
  import org.springframework.cloud.client.circuitbreaker.CircuitBreaker;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  /**
   * @author Eric Zhao
   */
  public class SentinelCircuitBreakerTest {
  
  	@AfterEach
  	public void tearDown() {
  		// Clear the rules.
  		DegradeRuleManager.loadRules(new ArrayList<>());
  	}
  
  	@Test
  	public void testCreateDirectlyThenRun() {
  		// Create a circuit breaker without any circuit breaking rules.
  		CircuitBreaker cb = new SentinelCircuitBreaker(
  				"testSentinelCreateDirectlyThenRunA");
  		assertThat(cb.run(() -> "Sentinel")).isEqualTo("Sentinel");
  		assertThat(DegradeRuleManager.hasConfig("testSentinelCreateDirectlyThenRunA"))
  				.isFalse();
  
  		CircuitBreaker cb2 = new SentinelCircuitBreaker(
  				"testSentinelCreateDirectlyThenRunB",
  				Collections.singletonList(
  						new DegradeRule("testSentinelCreateDirectlyThenRunB")
  								.setCount(100).setTimeWindow(10)));
  		assertThat(cb2.run(() -> "Sentinel")).isEqualTo("Sentinel");
  		assertThat(DegradeRuleManager.hasConfig("testSentinelCreateDirectlyThenRunB"))
  				.isTrue();
  	}
  
  	@Test
  	public void testCreateWithNullRule() {
  		String id = "testCreateCbWithNullRule";
  		CircuitBreaker cb = new SentinelCircuitBreaker(id,
  				Collections.singletonList(null));
  		assertThat(cb.run(() -> "Sentinel")).isEqualTo("Sentinel");
  		assertThat(DegradeRuleManager.hasConfig(id)).isFalse();
  	}
  
  	@Test
  	public void testCreateFromFactoryThenRun() {
  		CircuitBreaker cb = new SentinelCircuitBreakerFactory().create("testSentinelRun");
  		assertThat(cb.run(() -> "foobar")).isEqualTo("foobar");
  	}
  
  	@Test
  	public void testRunWithFallback() {
  		CircuitBreaker cb = new SentinelCircuitBreakerFactory()
  				.create("testSentinelRunWithFallback");
  		assertThat(cb.<String>run(() -> {
  			throw new RuntimeException("boom");
  		}, t -> "fallback")).isEqualTo("fallback");
  	}
  
  }
  