LazyWiringDeclarableSupportIntegrationTests.java

/*
 * Copyright 2016 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.data.gemfire.support;

import static org.assertj.core.api.Assertions.assertThat;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.nullValue;
import static org.hamcrest.Matchers.startsWith;
import static org.springframework.data.gemfire.support.WiringDeclarableSupport.TEMPLATE_BEAN_NAME_PROPERTY;

import java.util.Properties;

import javax.sql.DataSource;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.data.gemfire.repository.sample.User;
import org.springframework.data.gemfire.test.support.DataSourceAdapter;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.util.Assert;

/**
 * Integration tests for {@link LazyWiringDeclarableSupport}.
 *
 * @author John Blum
 * @see org.junit.Test
 * @see org.springframework.test.context.ContextConfiguration
 * @see org.springframework.test.context.junit4.SpringRunner
 * @since 1.3.4
 */
@RunWith(SpringRunner.class)
@ContextConfiguration
@SuppressWarnings("unused")
public class LazyWiringDeclarableSupportIntegrationTests {

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

	@Autowired
	private ApplicationContext applicationContext;

	private static Properties createParameters(String parameter, String value) {
		Properties parameters = new Properties();
		parameters.setProperty(parameter, value);
		return parameters;
	}

	@Test
	public void autoWiringSuccessful() {
		TestDeclarable declarable = new TestDeclarable();

		declarable.init(createParameters("testParam", "testValue"));
		declarable.onApplicationEvent(new ContextRefreshedEvent(applicationContext));
		declarable.assertInitialized();

		assertThat(declarable.getDataSource()).isNull();
		assertThat(declarable.getUser()).isNotNull();
		assertThat(declarable.getUser().getUsername()).isEqualTo("supertool");
	}

	@Test
	public void autoWiringWithBeanTemplateSuccessful() {
		TestDeclarable declarable = new TestDeclarable();

		declarable.init(createParameters(TEMPLATE_BEAN_NAME_PROPERTY, "declarableTemplateBean"));
		declarable.onApplicationEvent(new ContextRefreshedEvent(applicationContext));
		declarable.assertInitialized();

		assertThat(declarable.getDataSource()).isNotNull();
		assertThat(declarable.getUser()).isNotNull();
		assertThat(declarable.getUser().getUsername()).isEqualTo("supertool");
	}

	@Test
	public void autoWiringWithNonExistingBeanTemplateThrowsIllegalArgumentException() {
		exception.expect(IllegalArgumentException.class);
		exception.expectCause(is(nullValue(Throwable.class)));
		exception.expectMessage(startsWith(
			"Cannot find bean with name [nonExistingBeanTemplate]"));

		TestDeclarable declarable = new TestDeclarable();

		declarable.init(createParameters(TEMPLATE_BEAN_NAME_PROPERTY, "nonExistingBeanTemplate"));
		declarable.onApplicationEvent(new ContextRefreshedEvent(applicationContext));
	}

	protected static final class TestDataSource extends DataSourceAdapter {
	}

	protected static final class TestDeclarable extends LazyWiringDeclarableSupport {

		private DataSource dataSource;

		@Autowired
		private User user;

		public final void setDataSource(DataSource dataSource) {
			this.dataSource = dataSource;
		}

		DataSource getDataSource() {
			return dataSource;
		}

		protected User getUser() {
			Assert.state(user != null, "A reference to the User was not properly configured");
			return user;
		}
	}
}