GlobalBeanDefinitionUtilsTest.java

/*
 * Copyright 2013-2014 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.cloud.aws.context.config.xml;

import org.junit.Test;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.cloud.aws.core.env.ResourceIdResolver;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.MatcherAssert.assertThat;

public class GlobalBeanDefinitionUtilsTest {

    @Test
    public void retrieveResourceIdResolverBeanName_resourceIdResolverBeanNotYetRegistered_resourceIdResolverBeanIsRegistered() {
        // Arrange
        DefaultListableBeanFactory registry = new DefaultListableBeanFactory();

        // Act
        GlobalBeanDefinitionUtils.retrieveResourceIdResolverBeanName(registry);

        // Assert
        assertThat(registry.getBeanNamesForType(ResourceIdResolver.class).length, is(1));
    }

    @Test
    public void retrieveResourceIdResolverBeanName_resourceIdResolverBeanNotYetRegistered_resourceIdResolverBeanIsRegisteredUnderInternalName() {
        // Arrange
        DefaultListableBeanFactory registry = new DefaultListableBeanFactory();

        // Act
        GlobalBeanDefinitionUtils.retrieveResourceIdResolverBeanName(registry);

        // Assert
        assertThat(registry.getBeanDefinition(GlobalBeanDefinitionUtils.RESOURCE_ID_RESOLVER_BEAN_NAME), is(not(nullValue())));
    }

    @Test
    public void retrieveResourceIdResolverBeanName_resourceIdResolverBeanNotYetRegistered_returnsInternalBeanName() {
        // Arrange
        DefaultListableBeanFactory registry = new DefaultListableBeanFactory();

        // Act
        String resourceIdResolverBeanName = GlobalBeanDefinitionUtils.retrieveResourceIdResolverBeanName(registry);

        // Assert
        assertThat(resourceIdResolverBeanName, is(GlobalBeanDefinitionUtils.RESOURCE_ID_RESOLVER_BEAN_NAME));
    }

    @Test
    public void retrieveResourceIdResolverBeanName_resourceIdResolverBeanAlreadyRegistered_resourceIdResolverBeanIsNotAgainRegistered() {
        // Arrange
        BeanDefinition resourceIdResolverBeanDefinition = new GenericBeanDefinition();

        DefaultListableBeanFactory registry = new DefaultListableBeanFactory();
        registry.registerBeanDefinition(GlobalBeanDefinitionUtils.RESOURCE_ID_RESOLVER_BEAN_NAME, resourceIdResolverBeanDefinition);

        // Act
        GlobalBeanDefinitionUtils.retrieveResourceIdResolverBeanName(registry);

        // Assert
        assertThat(registry.getBeanDefinition(GlobalBeanDefinitionUtils.RESOURCE_ID_RESOLVER_BEAN_NAME), is(resourceIdResolverBeanDefinition));
    }

    @Test
    public void retrieveResourceIdResolverBeanName_resourceIdResolverBeanAlreadyRegistered_returnsInternalBeanName() {
        // Arrange
        BeanDefinition resourceIdResolverBeanDefinition = new GenericBeanDefinition();

        DefaultListableBeanFactory registry = new DefaultListableBeanFactory();
        registry.registerBeanDefinition(GlobalBeanDefinitionUtils.RESOURCE_ID_RESOLVER_BEAN_NAME, resourceIdResolverBeanDefinition);

        // Act
        String resourceIdResolverBeanName = GlobalBeanDefinitionUtils.retrieveResourceIdResolverBeanName(registry);

        // Assert
        assertThat(resourceIdResolverBeanName, is(GlobalBeanDefinitionUtils.RESOURCE_ID_RESOLVER_BEAN_NAME));
    }

}