/*
 * Copyright 2013-2019 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 org.springframework.cloud.config.client;

import java.lang.reflect.Field;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.util.TestPropertyValues;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.util.ReflectionUtils;
import org.springframework.web.client.RestTemplate;

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

/**
 * @author Tristan Hanson
 *
 */
public class ConfigServiceBootstrapConfigurationTest {

	private AnnotationConfigApplicationContext context;

	@Before
	public void setUp() throws Exception {
		this.context = new AnnotationConfigApplicationContext();
	}

	@After
	public void tearDown() throws Exception {
		if (this.context != null) {
			this.context.close();
		}
	}

	@Test
	public void overrideConfigServicePropertySourceLocatorWhenBeanIsProvided() {
		TestPropertyValues.of("spring.cloud.config.enabled=true").applyTo(this.context);
		this.context.register(ConfigServicePropertySourceLocatorOverrideConfig.class);
		this.context.register(ConfigServiceBootstrapConfiguration.class);
		this.context.refresh();

		ConfigServicePropertySourceLocator locator = this.context.getBean(ConfigServicePropertySourceLocator.class);

		Field restTemplateField = ReflectionUtils.findField(ConfigServicePropertySourceLocator.class, "restTemplate");
		restTemplateField.setAccessible(true);

		RestTemplate restTemplate = (RestTemplate) ReflectionUtils.getField(restTemplateField, locator);

		assertThat(restTemplate).isNotNull();
	}

	@Configuration(proxyBeanMethods = false)
	protected static class ConfigServicePropertySourceLocatorOverrideConfig {

		@Autowired
		private Environment environment;

		@Bean
		public ConfigServicePropertySourceLocator locator() {
			ConfigServicePropertySourceLocator locator = new ConfigServicePropertySourceLocator(
					new ConfigClientProperties(this.environment));
			locator.setRestTemplate(new RestTemplate());
			return locator;
		}

	}

}
