/*
 * Copyright 2012-2017 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.gradle.docs;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Properties;

import org.junit.Rule;
import org.junit.Test;

import org.springframework.boot.gradle.testkit.GradleBuild;

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

/**
 * Tests for the generating build info documentation.
 *
 * @author Andy Wilkinson
 */
public class IntegratingWithActuatorDocumentationTests {

	@Rule
	public GradleBuild gradleBuild = new GradleBuild();

	@Test
	public void basicBuildInfo() throws IOException {
		this.gradleBuild
				.script("src/main/gradle/integrating-with-actuator/build-info-basic.gradle")
				.build("bootBuildInfo");
		assertThat(new File(this.gradleBuild.getProjectDir(),
				"build/resources/main/META-INF/build-info.properties")).isFile();
	}

	@Test
	public void buildInfoCustomValues() throws IOException {
		this.gradleBuild
				.script("src/main/gradle/integrating-with-actuator/build-info-custom-values.gradle")
				.build("bootBuildInfo");
		File file = new File(this.gradleBuild.getProjectDir(),
				"build/resources/main/META-INF/build-info.properties");
		assertThat(file).isFile();
		Properties properties = buildInfoProperties(file);
		assertThat(properties).containsEntry("build.artifact", "example-app");
		assertThat(properties).containsEntry("build.version", "1.2.3");
		assertThat(properties).containsEntry("build.group", "com.example");
		assertThat(properties).containsEntry("build.name", "Example application");
	}

	@Test
	public void buildInfoAdditional() throws IOException {
		this.gradleBuild
				.script("src/main/gradle/integrating-with-actuator/build-info-additional.gradle")
				.build("bootBuildInfo");
		File file = new File(this.gradleBuild.getProjectDir(),
				"build/resources/main/META-INF/build-info.properties");
		assertThat(file).isFile();
		Properties properties = buildInfoProperties(file);
		assertThat(properties).containsEntry("build.a", "alpha");
		assertThat(properties).containsEntry("build.b", "bravo");
	}

	private Properties buildInfoProperties(File file) {
		assertThat(file).isFile();
		Properties properties = new Properties();
		try (FileReader reader = new FileReader(file)) {
			properties.load(reader);
			return properties;
		}
		catch (IOException ex) {
			throw new RuntimeException(ex);
		}
	}

}
