/*
 * Copyright 2002-2019 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.beans.factory.config;

import java.util.Date;

import javax.inject.Provider;

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.core.testfixture.io.SerializationTestUtils;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;
import static org.springframework.core.testfixture.io.ResourceTestUtils.qualifiedResource;

/**
 * @author Colin Sampaleanu
 * @author Juergen Hoeller
 * @author Rick Evans
 * @author Chris Beams
 */
public class ObjectFactoryCreatingFactoryBeanTests {

	private DefaultListableBeanFactory beanFactory;


	@BeforeEach
	public void setup() {
		this.beanFactory = new DefaultListableBeanFactory();
		new XmlBeanDefinitionReader(this.beanFactory).loadBeanDefinitions(
				qualifiedResource(ObjectFactoryCreatingFactoryBeanTests.class, "context.xml"));
		this.beanFactory.setSerializationId("test");
	}

	@AfterEach
	public void close() {
		this.beanFactory.setSerializationId(null);
	}


	@Test
	public void testFactoryOperation() {
		FactoryTestBean testBean = beanFactory.getBean("factoryTestBean", FactoryTestBean.class);
		ObjectFactory<?> objectFactory = testBean.getObjectFactory();

		Date date1 = (Date) objectFactory.getObject();
		Date date2 = (Date) objectFactory.getObject();
		assertThat(date1 != date2).isTrue();
	}

	@Test
	@SuppressWarnings("rawtypes")
	public void testFactorySerialization() throws Exception {
		FactoryTestBean testBean = beanFactory.getBean("factoryTestBean", FactoryTestBean.class);
		ObjectFactory<?> objectFactory = testBean.getObjectFactory();

		objectFactory = (ObjectFactory) SerializationTestUtils.serializeAndDeserialize(objectFactory);

		Date date1 = (Date) objectFactory.getObject();
		Date date2 = (Date) objectFactory.getObject();
		assertThat(date1 != date2).isTrue();
	}

	@Test
	public void testProviderOperation() {
		ProviderTestBean testBean = beanFactory.getBean("providerTestBean", ProviderTestBean.class);
		Provider<?> provider = testBean.getProvider();

		Date date1 = (Date) provider.get();
		Date date2 = (Date) provider.get();
		assertThat(date1 != date2).isTrue();
	}

	@Test
	@SuppressWarnings("rawtypes")
	public void testProviderSerialization() throws Exception {
		ProviderTestBean testBean = beanFactory.getBean("providerTestBean", ProviderTestBean.class);
		Provider<?> provider = testBean.getProvider();

		provider = (Provider) SerializationTestUtils.serializeAndDeserialize(provider);

		Date date1 = (Date) provider.get();
		Date date2 = (Date) provider.get();
		assertThat(date1 != date2).isTrue();
	}

	@Test
	public void testDoesNotComplainWhenTargetBeanNameRefersToSingleton() throws Exception {
		final String targetBeanName = "singleton";
		final String expectedSingleton = "Alicia Keys";

		BeanFactory beanFactory = mock(BeanFactory.class);
		given(beanFactory.getBean(targetBeanName)).willReturn(expectedSingleton);

		ObjectFactoryCreatingFactoryBean factory = new ObjectFactoryCreatingFactoryBean();
		factory.setTargetBeanName(targetBeanName);
		factory.setBeanFactory(beanFactory);
		factory.afterPropertiesSet();
		ObjectFactory<?> objectFactory = factory.getObject();
		Object actualSingleton = objectFactory.getObject();
		assertThat(actualSingleton).isSameAs(expectedSingleton);
	}

	@Test
	public void testWhenTargetBeanNameIsNull() throws Exception {
		assertThatIllegalArgumentException().as(
				"'targetBeanName' property not set").isThrownBy(
						new ObjectFactoryCreatingFactoryBean()::afterPropertiesSet);
	}

	@Test
	public void testWhenTargetBeanNameIsEmptyString() throws Exception {
		ObjectFactoryCreatingFactoryBean factory = new ObjectFactoryCreatingFactoryBean();
		factory.setTargetBeanName("");
		assertThatIllegalArgumentException().as(
				"'targetBeanName' property set to (invalid) empty string").isThrownBy(
						factory::afterPropertiesSet);
	}

	@Test
	public void testWhenTargetBeanNameIsWhitespacedString() throws Exception {
		ObjectFactoryCreatingFactoryBean factory = new ObjectFactoryCreatingFactoryBean();
		factory.setTargetBeanName("  \t");
		assertThatIllegalArgumentException().as(
				"'targetBeanName' property set to (invalid) only-whitespace string").isThrownBy(
						factory::afterPropertiesSet);
	}

	@Test
	public void testEnsureOFBFBReportsThatItActuallyCreatesObjectFactoryInstances() {
		assertThat(new ObjectFactoryCreatingFactoryBean().getObjectType()).as("Must be reporting that it creates ObjectFactory instances (as per class contract).").isEqualTo(ObjectFactory.class);
	}


	public static class FactoryTestBean {

		private ObjectFactory<?> objectFactory;

		public ObjectFactory<?> getObjectFactory() {
			return objectFactory;
		}

		public void setObjectFactory(ObjectFactory<?> objectFactory) {
			this.objectFactory = objectFactory;
		}
	}


	public static class ProviderTestBean {

		private Provider<?> provider;

		public Provider<?> getProvider() {
			return provider;
		}

		public void setProvider(Provider<?> provider) {
			this.provider = provider;
		}
	}

}
