/*
 * 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.xml;

import java.lang.reflect.Proxy;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.TreeMap;

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

import org.springframework.beans.factory.config.FieldRetrievingFactoryBean;
import org.springframework.beans.factory.config.PropertiesFactoryBean;
import org.springframework.beans.factory.parsing.ComponentDefinition;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.testfixture.beans.CollectingReaderEventListener;
import org.springframework.beans.testfixture.beans.CustomEnum;
import org.springframework.beans.testfixture.beans.TestBean;
import org.springframework.core.io.ClassPathResource;
import org.springframework.util.LinkedCaseInsensitiveMap;

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

/**
 * @author Rob Harrop
 * @author Juergen Hoeller
 * @author Mark Fisher
 */
@SuppressWarnings("rawtypes")
public class UtilNamespaceHandlerTests {

	private DefaultListableBeanFactory beanFactory;

	private CollectingReaderEventListener listener = new CollectingReaderEventListener();


	@BeforeEach
	public void setUp() {
		this.beanFactory = new DefaultListableBeanFactory();
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(this.beanFactory);
		reader.setEventListener(this.listener);
		reader.loadBeanDefinitions(new ClassPathResource("testUtilNamespace.xml", getClass()));
	}


	@Test
	public void testConstant() {
		Integer min = (Integer) this.beanFactory.getBean("min");
		assertThat(min.intValue()).isEqualTo(Integer.MIN_VALUE);
	}

	@Test
	public void testConstantWithDefaultName() {
		Integer max = (Integer) this.beanFactory.getBean("java.lang.Integer.MAX_VALUE");
		assertThat(max.intValue()).isEqualTo(Integer.MAX_VALUE);
	}

	@Test
	public void testEvents() {
		ComponentDefinition propertiesComponent = this.listener.getComponentDefinition("myProperties");
		assertThat(propertiesComponent).as("Event for 'myProperties' not sent").isNotNull();
		AbstractBeanDefinition propertiesBean = (AbstractBeanDefinition) propertiesComponent.getBeanDefinitions()[0];
		assertThat(propertiesBean.getBeanClass()).as("Incorrect BeanDefinition").isEqualTo(PropertiesFactoryBean.class);

		ComponentDefinition constantComponent = this.listener.getComponentDefinition("min");
		assertThat(propertiesComponent).as("Event for 'min' not sent").isNotNull();
		AbstractBeanDefinition constantBean = (AbstractBeanDefinition) constantComponent.getBeanDefinitions()[0];
		assertThat(constantBean.getBeanClass()).as("Incorrect BeanDefinition").isEqualTo(FieldRetrievingFactoryBean.class);
	}

	@Test
	public void testNestedProperties() {
		TestBean bean = (TestBean) this.beanFactory.getBean("testBean");
		Properties props = bean.getSomeProperties();
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("bar");
	}

	@Test
	public void testPropertyPath() {
		String name = (String) this.beanFactory.getBean("name");
		assertThat(name).isEqualTo("Rob Harrop");
	}

	@Test
	public void testNestedPropertyPath() {
		TestBean bean = (TestBean) this.beanFactory.getBean("testBean");
		assertThat(bean.getName()).isEqualTo("Rob Harrop");
	}

	@Test
	public void testSimpleMap() {
		Map map = (Map) this.beanFactory.getBean("simpleMap");
		assertThat(map.get("foo")).isEqualTo("bar");
		Map map2 = (Map) this.beanFactory.getBean("simpleMap");
		assertThat(map == map2).isTrue();
	}

	@Test
	public void testScopedMap() {
		Map map = (Map) this.beanFactory.getBean("scopedMap");
		assertThat(map.get("foo")).isEqualTo("bar");
		Map map2 = (Map) this.beanFactory.getBean("scopedMap");
		assertThat(map2.get("foo")).isEqualTo("bar");
		assertThat(map != map2).isTrue();
	}

	@Test
	public void testSimpleList() {
		List list = (List) this.beanFactory.getBean("simpleList");
		assertThat(list.get(0)).isEqualTo("Rob Harrop");
		List list2 = (List) this.beanFactory.getBean("simpleList");
		assertThat(list == list2).isTrue();
	}

	@Test
	public void testScopedList() {
		List list = (List) this.beanFactory.getBean("scopedList");
		assertThat(list.get(0)).isEqualTo("Rob Harrop");
		List list2 = (List) this.beanFactory.getBean("scopedList");
		assertThat(list2.get(0)).isEqualTo("Rob Harrop");
		assertThat(list != list2).isTrue();
	}

	@Test
	public void testSimpleSet() {
		Set set = (Set) this.beanFactory.getBean("simpleSet");
		assertThat(set.contains("Rob Harrop")).isTrue();
		Set set2 = (Set) this.beanFactory.getBean("simpleSet");
		assertThat(set == set2).isTrue();
	}

	@Test
	public void testScopedSet() {
		Set set = (Set) this.beanFactory.getBean("scopedSet");
		assertThat(set.contains("Rob Harrop")).isTrue();
		Set set2 = (Set) this.beanFactory.getBean("scopedSet");
		assertThat(set2.contains("Rob Harrop")).isTrue();
		assertThat(set != set2).isTrue();
	}

	@Test
	public void testMapWithRef() {
		Map map = (Map) this.beanFactory.getBean("mapWithRef");
		boolean condition = map instanceof TreeMap;
		assertThat(condition).isTrue();
		assertThat(map.get("bean")).isEqualTo(this.beanFactory.getBean("testBean"));
	}

	@Test
	public void testMapWithTypes() {
		Map map = (Map) this.beanFactory.getBean("mapWithTypes");
		boolean condition = map instanceof LinkedCaseInsensitiveMap;
		assertThat(condition).isTrue();
		assertThat(map.get("bean")).isEqualTo(this.beanFactory.getBean("testBean"));
	}

	@Test
	public void testNestedCollections() {
		TestBean bean = (TestBean) this.beanFactory.getBean("nestedCollectionsBean");

		List list = bean.getSomeList();
		assertThat(list.size()).isEqualTo(1);
		assertThat(list.get(0)).isEqualTo("foo");

		Set set = bean.getSomeSet();
		assertThat(set.size()).isEqualTo(1);
		assertThat(set.contains("bar")).isTrue();

		Map map = bean.getSomeMap();
		assertThat(map.size()).isEqualTo(1);
		boolean condition = map.get("foo") instanceof Set;
		assertThat(condition).isTrue();
		Set innerSet = (Set) map.get("foo");
		assertThat(innerSet.size()).isEqualTo(1);
		assertThat(innerSet.contains("bar")).isTrue();

		TestBean bean2 = (TestBean) this.beanFactory.getBean("nestedCollectionsBean");
		assertThat(bean2.getSomeList()).isEqualTo(list);
		assertThat(bean2.getSomeSet()).isEqualTo(set);
		assertThat(bean2.getSomeMap()).isEqualTo(map);
		assertThat(list == bean2.getSomeList()).isFalse();
		assertThat(set == bean2.getSomeSet()).isFalse();
		assertThat(map == bean2.getSomeMap()).isFalse();
	}

	@Test
	public void testNestedShortcutCollections() {
		TestBean bean = (TestBean) this.beanFactory.getBean("nestedShortcutCollections");

		assertThat(bean.getStringArray().length).isEqualTo(1);
		assertThat(bean.getStringArray()[0]).isEqualTo("fooStr");

		List list = bean.getSomeList();
		assertThat(list.size()).isEqualTo(1);
		assertThat(list.get(0)).isEqualTo("foo");

		Set set = bean.getSomeSet();
		assertThat(set.size()).isEqualTo(1);
		assertThat(set.contains("bar")).isTrue();

		TestBean bean2 = (TestBean) this.beanFactory.getBean("nestedShortcutCollections");
		assertThat(Arrays.equals(bean.getStringArray(), bean2.getStringArray())).isTrue();
		assertThat(bean.getStringArray() == bean2.getStringArray()).isFalse();
		assertThat(bean2.getSomeList()).isEqualTo(list);
		assertThat(bean2.getSomeSet()).isEqualTo(set);
		assertThat(list == bean2.getSomeList()).isFalse();
		assertThat(set == bean2.getSomeSet()).isFalse();
	}

	@Test
	public void testNestedInCollections() {
		TestBean bean = (TestBean) this.beanFactory.getBean("nestedCustomTagBean");

		List list = bean.getSomeList();
		assertThat(list.size()).isEqualTo(1);
		assertThat(list.get(0)).isEqualTo(Integer.MIN_VALUE);

		Set set = bean.getSomeSet();
		assertThat(set.size()).isEqualTo(2);
		assertThat(set.contains(Thread.State.NEW)).isTrue();
		assertThat(set.contains(Thread.State.RUNNABLE)).isTrue();

		Map map = bean.getSomeMap();
		assertThat(map.size()).isEqualTo(1);
		assertThat(map.get("min")).isEqualTo(CustomEnum.VALUE_1);

		TestBean bean2 = (TestBean) this.beanFactory.getBean("nestedCustomTagBean");
		assertThat(bean2.getSomeList()).isEqualTo(list);
		assertThat(bean2.getSomeSet()).isEqualTo(set);
		assertThat(bean2.getSomeMap()).isEqualTo(map);
		assertThat(list == bean2.getSomeList()).isFalse();
		assertThat(set == bean2.getSomeSet()).isFalse();
		assertThat(map == bean2.getSomeMap()).isFalse();
	}

	@Test
	public void testCircularCollections() {
		TestBean bean = (TestBean) this.beanFactory.getBean("circularCollectionsBean");

		List list = bean.getSomeList();
		assertThat(list.size()).isEqualTo(1);
		assertThat(list.get(0)).isEqualTo(bean);

		Set set = bean.getSomeSet();
		assertThat(set.size()).isEqualTo(1);
		assertThat(set.contains(bean)).isTrue();

		Map map = bean.getSomeMap();
		assertThat(map.size()).isEqualTo(1);
		assertThat(map.get("foo")).isEqualTo(bean);
	}

	@Test
	public void testCircularCollectionBeansStartingWithList() {
		this.beanFactory.getBean("circularList");
		TestBean bean = (TestBean) this.beanFactory.getBean("circularCollectionBeansBean");

		List list = bean.getSomeList();
		assertThat(Proxy.isProxyClass(list.getClass())).isTrue();
		assertThat(list.size()).isEqualTo(1);
		assertThat(list.get(0)).isEqualTo(bean);

		Set set = bean.getSomeSet();
		assertThat(Proxy.isProxyClass(set.getClass())).isFalse();
		assertThat(set.size()).isEqualTo(1);
		assertThat(set.contains(bean)).isTrue();

		Map map = bean.getSomeMap();
		assertThat(Proxy.isProxyClass(map.getClass())).isFalse();
		assertThat(map.size()).isEqualTo(1);
		assertThat(map.get("foo")).isEqualTo(bean);
	}

	@Test
	public void testCircularCollectionBeansStartingWithSet() {
		this.beanFactory.getBean("circularSet");
		TestBean bean = (TestBean) this.beanFactory.getBean("circularCollectionBeansBean");

		List list = bean.getSomeList();
		assertThat(Proxy.isProxyClass(list.getClass())).isFalse();
		assertThat(list.size()).isEqualTo(1);
		assertThat(list.get(0)).isEqualTo(bean);

		Set set = bean.getSomeSet();
		assertThat(Proxy.isProxyClass(set.getClass())).isTrue();
		assertThat(set.size()).isEqualTo(1);
		assertThat(set.contains(bean)).isTrue();

		Map map = bean.getSomeMap();
		assertThat(Proxy.isProxyClass(map.getClass())).isFalse();
		assertThat(map.size()).isEqualTo(1);
		assertThat(map.get("foo")).isEqualTo(bean);
	}

	@Test
	public void testCircularCollectionBeansStartingWithMap() {
		this.beanFactory.getBean("circularMap");
		TestBean bean = (TestBean) this.beanFactory.getBean("circularCollectionBeansBean");

		List list = bean.getSomeList();
		assertThat(Proxy.isProxyClass(list.getClass())).isFalse();
		assertThat(list.size()).isEqualTo(1);
		assertThat(list.get(0)).isEqualTo(bean);

		Set set = bean.getSomeSet();
		assertThat(Proxy.isProxyClass(set.getClass())).isFalse();
		assertThat(set.size()).isEqualTo(1);
		assertThat(set.contains(bean)).isTrue();

		Map map = bean.getSomeMap();
		assertThat(Proxy.isProxyClass(map.getClass())).isTrue();
		assertThat(map.size()).isEqualTo(1);
		assertThat(map.get("foo")).isEqualTo(bean);
	}

	@Test
	public void testNestedInConstructor() {
		TestBean bean = (TestBean) this.beanFactory.getBean("constructedTestBean");
		assertThat(bean.getName()).isEqualTo("Rob Harrop");
	}

	@Test
	public void testLoadProperties() {
		Properties props = (Properties) this.beanFactory.getBean("myProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("bar");
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo(null);
		Properties props2 = (Properties) this.beanFactory.getBean("myProperties");
		assertThat(props == props2).isTrue();
	}

	@Test
	public void testScopedProperties() {
		Properties props = (Properties) this.beanFactory.getBean("myScopedProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("bar");
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo(null);
		Properties props2 = (Properties) this.beanFactory.getBean("myScopedProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("bar");
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo(null);
		assertThat(props != props2).isTrue();
	}

	@Test
	public void testLocalProperties() {
		Properties props = (Properties) this.beanFactory.getBean("myLocalProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo(null);
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo("bar2");
	}

	@Test
	public void testMergedProperties() {
		Properties props = (Properties) this.beanFactory.getBean("myMergedProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("bar");
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo("bar2");
	}

	@Test
	public void testLocalOverrideDefault() {
		Properties props = (Properties) this.beanFactory.getBean("defaultLocalOverrideProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("bar");
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo("local2");
	}

	@Test
	public void testLocalOverrideFalse() {
		Properties props = (Properties) this.beanFactory.getBean("falseLocalOverrideProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("bar");
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo("local2");
	}

	@Test
	public void testLocalOverrideTrue() {
		Properties props = (Properties) this.beanFactory.getBean("trueLocalOverrideProperties");
		assertThat(props.get("foo")).as("Incorrect property value").isEqualTo("local");
		assertThat(props.get("foo2")).as("Incorrect property value").isEqualTo("local2");
	}

}
