/*
 * Copyright 2012-2018 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 org.springframework.boot.actuate.mongo;

import com.mongodb.MongoException;
import org.bson.Document;
import org.junit.Test;
import reactor.core.publisher.Mono;
import reactor.test.StepVerifier;

import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.Status;
import org.springframework.data.mongodb.core.ReactiveMongoTemplate;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;

/**
 * Tests for {@link MongoReactiveHealthIndicator}.
 *
 * @author Yulin Qin
 */
public class MongoReactiveHealthIndicatorTest {

	@Test
	public void testMongoIsUp() {
		Document buildInfo = mock(Document.class);
		given(buildInfo.getString("version")).willReturn("2.6.4");
		ReactiveMongoTemplate reactiveMongoTemplate = mock(ReactiveMongoTemplate.class);
		given(reactiveMongoTemplate.executeCommand("{ buildInfo: 1 }"))
				.willReturn(Mono.just(buildInfo));
		MongoReactiveHealthIndicator mongoReactiveHealthIndicator = new MongoReactiveHealthIndicator(
				reactiveMongoTemplate);
		Mono<Health> health = mongoReactiveHealthIndicator.health();
		StepVerifier.create(health).consumeNextWith((h) -> {
			assertThat(h.getStatus()).isEqualTo(Status.UP);
			assertThat(h.getDetails()).containsOnlyKeys("version");
			assertThat(h.getDetails().get("version")).isEqualTo("2.6.4");
		}).verifyComplete();
	}

	@Test
	public void testMongoIsDown() {
		ReactiveMongoTemplate reactiveMongoTemplate = mock(ReactiveMongoTemplate.class);
		given(reactiveMongoTemplate.executeCommand("{ buildInfo: 1 }"))
				.willThrow(new MongoException("Connection failed"));
		MongoReactiveHealthIndicator mongoReactiveHealthIndicator = new MongoReactiveHealthIndicator(
				reactiveMongoTemplate);
		Mono<Health> health = mongoReactiveHealthIndicator.health();
		StepVerifier.create(health).consumeNextWith((h) -> {
			assertThat(h.getStatus()).isEqualTo(Status.DOWN);
			assertThat(h.getDetails()).containsOnlyKeys("error");
			assertThat(h.getDetails().get("error")).isEqualTo("Connection failed");
		}).verifyComplete();
	}

}
