/*
 * Copyright 2015-2019 The OpenZipkin 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 zipkin2.server.internal.rabbitmq;

import org.junit.After;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
import org.springframework.boot.test.util.TestPropertyValues;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import zipkin2.collector.rabbitmq.RabbitMQCollector;
import zipkin2.server.internal.InMemoryConfiguration;

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

public class ZipkinRabbitMQCollectorConfigurationTest {

  @Rule public ExpectedException thrown = ExpectedException.none();

  AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();

  @After public void close() {
    context.close();
  }

  @Test public void doesNotProvideCollectorComponent_whenAddressAndUriNotSet() {
    context.register(
      PropertyPlaceholderAutoConfiguration.class,
      ZipkinRabbitMQCollectorConfiguration.class,
      InMemoryConfiguration.class);
    context.refresh();

    thrown.expect(NoSuchBeanDefinitionException.class);
    context.getBean(RabbitMQCollector.class);
  }

  @Test public void doesNotProvideCollectorComponent_whenAddressesAndUriIsEmptyString() {
    context = new AnnotationConfigApplicationContext();
    TestPropertyValues.of(
      "zipkin.collector.rabbitmq.addresses:",
      "zipkin.collector.rabbitmq.uri:")
      .applyTo(context);
    context.register(
      PropertyPlaceholderAutoConfiguration.class,
      ZipkinRabbitMQCollectorConfiguration.class,
      InMemoryConfiguration.class);
    context.refresh();

    thrown.expect(NoSuchBeanDefinitionException.class);
    context.getBean(RabbitMQCollector.class);
  }

  @Test public void providesCollectorComponent_whenAddressesSet() {
    context = new AnnotationConfigApplicationContext();
    TestPropertyValues.of("zipkin.collector.rabbitmq.addresses:localhost:1234").applyTo(context);
    context.register(
      PropertyPlaceholderAutoConfiguration.class,
      ZipkinRabbitMQCollectorConfiguration.class,
      InMemoryConfiguration.class);

    try {
      context.refresh();
      failBecauseExceptionWasNotThrown(BeanCreationException.class);
    } catch (BeanCreationException e) {
      assertThat(e.getCause()).hasMessageContaining(
        "Unable to establish connection to RabbitMQ server: Connection refused");
    }
  }

  @Test public void doesNotProvidesCollectorComponent_whenAddressesSetAndDisabled() {
    context = new AnnotationConfigApplicationContext();
    TestPropertyValues.of("zipkin.collector.rabbitmq.addresses:localhost:1234").applyTo(context);
    TestPropertyValues.of("zipkin.collector.rabbitmq.enabled:false").applyTo(context);
    context.register(
      PropertyPlaceholderAutoConfiguration.class,
      ZipkinRabbitMQCollectorConfiguration.class,
      InMemoryConfiguration.class);
    context.refresh();

    thrown.expect(NoSuchBeanDefinitionException.class);
    context.getBean(RabbitMQCollector.class);
  }
}