Polish init/destroy lifecycle method tests

See spring-projectsgh-28083

spring-context/src/test/java/org/springframework/context/annotation/InitDestroyMethodLifecycleTests.java

@@ -0,0 +1,279 @@
+/*
+ * Copyright 2002-2022 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.context.annotation;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.DisposableBean;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.support.DefaultListableBeanFactory;
+import org.springframework.beans.factory.support.RootBeanDefinition;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests which verify expected <em>init</em> and <em>destroy</em> bean lifecycle
+ * behavior as requested in
+ * <a href="https://github.com/spring-projects/spring-framework/issues/8455" target="_blank">SPR-3775</a>.
+ *
+ * <p>Specifically, combinations of the following are tested:
+ * <ul>
+ * <li>{@link InitializingBean} &amp; {@link DisposableBean} interfaces</li>
+ * <li>Custom {@link RootBeanDefinition#getInitMethodName() init} &amp;
+ * {@link RootBeanDefinition#getDestroyMethodName() destroy} methods</li>
+ * <li>JSR 250's {@link javax.annotation.PostConstruct @PostConstruct} &amp;
+ * {@link javax.annotation.PreDestroy @PreDestroy} annotations</li>
+ * </ul>
+ *
+ * @author Sam Brannen
+ * @since 2.5
+ */
+class InitDestroyMethodLifecycleTests {
+
+	@Test
+	void initDestroyMethods() {
+		Class<?> beanClass = InitDestroyBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "afterPropertiesSet", "destroy");
+		InitDestroyBean bean = beanFactory.getBean(InitDestroyBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("afterPropertiesSet");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("destroy");
+	}
+
+	@Test
+	void initializingDisposableInterfaces() {
+		Class<?> beanClass = CustomInitializingDisposableBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "customInit", "customDestroy");
+		CustomInitializingDisposableBean bean = beanFactory.getBean(CustomInitializingDisposableBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("afterPropertiesSet", "customInit");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("destroy", "customDestroy");
+	}
+
+	@Test
+	void initializingDisposableInterfacesWithShadowedMethods() {
+		Class<?> beanClass = InitializingDisposableWithShadowedMethodsBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "afterPropertiesSet", "destroy");
+		InitializingDisposableWithShadowedMethodsBean bean = beanFactory.getBean(InitializingDisposableWithShadowedMethodsBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("InitializingBean.afterPropertiesSet");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("DisposableBean.destroy");
+	}
+
+	@Test
+	void jsr250Annotations() {
+		Class<?> beanClass = CustomAnnotatedInitDestroyBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "customInit", "customDestroy");
+		CustomAnnotatedInitDestroyBean bean = beanFactory.getBean(CustomAnnotatedInitDestroyBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("postConstruct", "afterPropertiesSet", "customInit");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("preDestroy", "destroy", "customDestroy");
+	}
+
+	@Test
+	void jsr250AnnotationsWithShadowedMethods() {
+		Class<?> beanClass = CustomAnnotatedInitDestroyWithShadowedMethodsBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "customInit", "customDestroy");
+		CustomAnnotatedInitDestroyWithShadowedMethodsBean bean = beanFactory.getBean(CustomAnnotatedInitDestroyWithShadowedMethodsBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("@PostConstruct.afterPropertiesSet", "customInit");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("@PreDestroy.destroy", "customDestroy");
+	}
+
+	@Test
+	void jsr250AnnotationsWithCustomPrivateInitDestroyMethods() {
+		Class<?> beanClass = CustomAnnotatedPrivateInitDestroyBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "customInit1", "customDestroy1");
+		CustomAnnotatedPrivateInitDestroyBean bean = beanFactory.getBean(CustomAnnotatedPrivateInitDestroyBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("@PostConstruct.privateCustomInit1", "afterPropertiesSet");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("@PreDestroy.privateCustomDestroy1", "destroy");
+	}
+
+	@Test
+	void jsr250AnnotationsWithCustomSameMethodNames() {
+		Class<?> beanClass = CustomAnnotatedPrivateSameNameInitDestroyBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "customInit1", "customDestroy1");
+		CustomAnnotatedPrivateSameNameInitDestroyBean bean = beanFactory.getBean(CustomAnnotatedPrivateSameNameInitDestroyBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("@PostConstruct.privateCustomInit1", "@PostConstruct.sameNameCustomInit1", "afterPropertiesSet");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("@PreDestroy.sameNameCustomDestroy1", "@PreDestroy.privateCustomDestroy1", "destroy");
+	}
+
+	@Test
+	void allLifecycleMechanismsAtOnce() {
+		Class<?> beanClass = AllInOneBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "afterPropertiesSet", "destroy");
+		AllInOneBean bean = beanFactory.getBean(AllInOneBean.class);
+		assertThat(bean.initMethods).as("init-methods").containsExactly("afterPropertiesSet");
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("destroy");
+	}
+
+
+	private static DefaultListableBeanFactory createBeanFactoryAndRegisterBean(Class<?> beanClass,
+			String initMethodName, String destroyMethodName) {
+
+		DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
+		RootBeanDefinition beanDefinition = new RootBeanDefinition(beanClass);
+		beanDefinition.setInitMethodName(initMethodName);
+		beanDefinition.setDestroyMethodName(destroyMethodName);
+		beanFactory.addBeanPostProcessor(new CommonAnnotationBeanPostProcessor());
+		beanFactory.registerBeanDefinition("lifecycleTestBean", beanDefinition);
+		return beanFactory;
+	}
+
+
+	static class InitDestroyBean {
+
+		final List<String> initMethods = new ArrayList<>();
+		final List<String> destroyMethods = new ArrayList<>();
+
+
+		public void afterPropertiesSet() throws Exception {
+			this.initMethods.add("afterPropertiesSet");
+		}
+
+		public void destroy() throws Exception {
+			this.destroyMethods.add("destroy");
+		}
+	}
+
+	static class InitializingDisposableWithShadowedMethodsBean extends InitDestroyBean implements
+			InitializingBean, DisposableBean {
+
+		@Override
+		public void afterPropertiesSet() throws Exception {
+			this.initMethods.add("InitializingBean.afterPropertiesSet");
+		}
+
+		@Override
+		public void destroy() throws Exception {
+			this.destroyMethods.add("DisposableBean.destroy");
+		}
+	}
+
+
+	static class CustomInitDestroyBean {
+
+		final List<String> initMethods = new ArrayList<>();
+		final List<String> destroyMethods = new ArrayList<>();
+
+		public void customInit() throws Exception {
+			this.initMethods.add("customInit");
+		}
+
+		public void customDestroy() throws Exception {
+			this.destroyMethods.add("customDestroy");
+		}
+	}
+
+	static class CustomAnnotatedPrivateInitDestroyBean extends CustomInitializingDisposableBean {
+
+		@PostConstruct
+		private void customInit1() throws Exception {
+			this.initMethods.add("@PostConstruct.privateCustomInit1");
+		}
+
+		@PreDestroy
+		private void customDestroy1() throws Exception {
+			this.destroyMethods.add("@PreDestroy.privateCustomDestroy1");
+		}
+	}
+
+	static class CustomAnnotatedPrivateSameNameInitDestroyBean extends CustomAnnotatedPrivateInitDestroyBean {
+
+		@PostConstruct
+		@SuppressWarnings("unused")
+		private void customInit1() throws Exception {
+			this.initMethods.add("@PostConstruct.sameNameCustomInit1");
+		}
+
+		@PreDestroy
+		@SuppressWarnings("unused")
+		private void customDestroy1() throws Exception {
+			this.destroyMethods.add("@PreDestroy.sameNameCustomDestroy1");
+		}
+	}
+
+	static class CustomInitializingDisposableBean extends CustomInitDestroyBean
+			implements InitializingBean, DisposableBean {
+
+		@Override
+		public void afterPropertiesSet() throws Exception {
+			this.initMethods.add("afterPropertiesSet");
+		}
+
+		@Override
+		public void destroy() throws Exception {
+			this.destroyMethods.add("destroy");
+		}
+	}
+
+	static class CustomAnnotatedInitDestroyBean extends CustomInitializingDisposableBean {
+
+		@PostConstruct
+		public void postConstruct() throws Exception {
+			this.initMethods.add("postConstruct");
+		}
+
+		@PreDestroy
+		public void preDestroy() throws Exception {
+			this.destroyMethods.add("preDestroy");
+		}
+	}
+
+	static class CustomAnnotatedInitDestroyWithShadowedMethodsBean extends CustomInitializingDisposableBean {
+
+		@PostConstruct
+		@Override
+		public void afterPropertiesSet() throws Exception {
+			this.initMethods.add("@PostConstruct.afterPropertiesSet");
+		}
+
+		@PreDestroy
+		@Override
+		public void destroy() throws Exception {
+			this.destroyMethods.add("@PreDestroy.destroy");
+		}
+	}
+
+	static class AllInOneBean implements InitializingBean, DisposableBean {
+
+		final List<String> initMethods = new ArrayList<>();
+		final List<String> destroyMethods = new ArrayList<>();
+
+		@PostConstruct
+		@Override
+		public void afterPropertiesSet() throws Exception {
+			this.initMethods.add("afterPropertiesSet");
+		}
+
+		@PreDestroy
+		@Override
+		public void destroy() throws Exception {
+			this.destroyMethods.add("destroy");
+		}
+	}
+
+}