/*
 * 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.autoconfigure.system;

import org.junit.Test;

import org.springframework.boot.actuate.autoconfigure.health.HealthIndicatorAutoConfiguration;
import org.springframework.boot.actuate.health.ApplicationHealthIndicator;
import org.springframework.boot.actuate.system.DiskSpaceHealthIndicator;
import org.springframework.boot.autoconfigure.AutoConfigurations;
import org.springframework.boot.test.context.runner.ApplicationContextRunner;
import org.springframework.util.unit.DataSize;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Tests for {@link DiskSpaceHealthIndicatorAutoConfiguration}.
 *
 * @author Phillip Webb
 * @author Stephane Nicoll
 */
public class DiskSpaceHealthIndicatorAutoConfigurationTests {

	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
			.withConfiguration(
					AutoConfigurations.of(DiskSpaceHealthIndicatorAutoConfiguration.class,
							HealthIndicatorAutoConfiguration.class));

	@Test
	public void runShouldCreateIndicator() {
		this.contextRunner.run((context) -> assertThat(context)
				.hasSingleBean(DiskSpaceHealthIndicator.class)
				.doesNotHaveBean(ApplicationHealthIndicator.class));
	}

	@Test
	public void thresholdMustBePositive() {
		this.contextRunner
				.withPropertyValues("management.health.diskspace.threshold=-10MB")
				.run((context) -> assertThat(context).hasFailed().getFailure()
						.hasMessageContaining(
								"Failed to bind properties under 'management.health.diskspace'"));
	}

	@Test
	public void thresholdCanBeCustomized() {
		this.contextRunner
				.withPropertyValues("management.health.diskspace.threshold=20MB")
				.run((context) -> {
					assertThat(context).hasSingleBean(DiskSpaceHealthIndicator.class);
					assertThat(context.getBean(DiskSpaceHealthIndicator.class))
							.hasFieldOrPropertyWithValue("threshold",
									DataSize.ofMegabytes(20));
				});
	}

	@Test
	public void runWhenDisabledShouldNotCreateIndicator() {
		this.contextRunner.withPropertyValues("management.health.diskspace.enabled:false")
				.run((context) -> assertThat(context)
						.doesNotHaveBean(DiskSpaceHealthIndicator.class)
						.hasSingleBean(ApplicationHealthIndicator.class));
	}

}
