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Declare complete set of default methods on ObjectProvider
Closes gh-33070
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126 changes: 126 additions & 0 deletions
126
spring-beans/src/test/java/org/springframework/beans/factory/CustomObjectProviderTests.java
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| /* | ||
| * Copyright 2002-2024 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. | ||
| */ | ||
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| package org.springframework.beans.factory; | ||
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| import java.util.stream.Stream; | ||
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| import org.junit.jupiter.api.Test; | ||
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| import org.springframework.beans.BeansException; | ||
| import org.springframework.beans.testfixture.beans.TestBean; | ||
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| import static org.assertj.core.api.Assertions.assertThat; | ||
| import static org.assertj.core.api.Assertions.assertThatExceptionOfType; | ||
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| /** | ||
| * @author Juergen Hoeller | ||
| * @since 6.2 | ||
| */ | ||
| public class CustomObjectProviderTests { | ||
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| @Test | ||
| void getObject() { | ||
| TestBean tb1 = new TestBean("tb1"); | ||
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| ObjectProvider<TestBean> provider = new ObjectProvider<>() { | ||
| @Override | ||
| public TestBean getObject() throws BeansException { | ||
| return tb1; | ||
| } | ||
| }; | ||
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| assertThat(provider.getObject()).isSameAs(tb1); | ||
| assertThat(provider.getIfAvailable()).isSameAs(tb1); | ||
| assertThat(provider.getIfUnique()).isSameAs(tb1); | ||
| } | ||
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| @Test | ||
| void noObject() { | ||
| ObjectProvider<TestBean> provider = new ObjectProvider<>() { | ||
| @Override | ||
| public TestBean getObject() throws BeansException { | ||
| throw new NoSuchBeanDefinitionException(Object.class); | ||
| } | ||
| }; | ||
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| assertThatExceptionOfType(NoSuchBeanDefinitionException.class).isThrownBy(provider::getObject); | ||
| assertThat(provider.getIfAvailable()).isNull(); | ||
| assertThat(provider.getIfUnique()).isNull(); | ||
| } | ||
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| @Test | ||
| void noUniqueObject() { | ||
| ObjectProvider<TestBean> provider = new ObjectProvider<>() { | ||
| @Override | ||
| public TestBean getObject() throws BeansException { | ||
| throw new NoUniqueBeanDefinitionException(Object.class); | ||
| } | ||
| }; | ||
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| assertThatExceptionOfType(NoUniqueBeanDefinitionException.class).isThrownBy(provider::getObject); | ||
| assertThatExceptionOfType(NoUniqueBeanDefinitionException.class).isThrownBy(provider::getIfAvailable); | ||
| assertThat(provider.getIfUnique()).isNull(); | ||
| } | ||
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| @Test | ||
| void emptyStream() { | ||
| ObjectProvider<TestBean> provider = new ObjectProvider<>() { | ||
| @Override | ||
| public Stream<TestBean> stream() { | ||
| return Stream.empty(); | ||
| } | ||
| }; | ||
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| assertThatExceptionOfType(NoSuchBeanDefinitionException.class).isThrownBy(provider::getObject); | ||
| assertThat(provider.getIfAvailable()).isNull(); | ||
| assertThat(provider.getIfUnique()).isNull(); | ||
| } | ||
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| @Test | ||
| void streamWithOneObject() { | ||
| TestBean tb1 = new TestBean("tb1"); | ||
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| ObjectProvider<TestBean> provider = new ObjectProvider<>() { | ||
| @Override | ||
| public Stream<TestBean> stream() { | ||
| return Stream.of(tb1); | ||
| } | ||
| }; | ||
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| assertThat(provider.getObject()).isSameAs(tb1); | ||
| assertThat(provider.getIfAvailable()).isSameAs(tb1); | ||
| assertThat(provider.getIfUnique()).isSameAs(tb1); | ||
| } | ||
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| @Test | ||
| void streamWithTwoObjects() { | ||
| TestBean tb1 = new TestBean("tb1"); | ||
| TestBean tb2 = new TestBean("tb2"); | ||
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| ObjectProvider<TestBean> provider = new ObjectProvider<>() { | ||
| @Override | ||
| public Stream<TestBean> stream() { | ||
| return Stream.of(tb1, tb2); | ||
| } | ||
| }; | ||
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| assertThatExceptionOfType(NoUniqueBeanDefinitionException.class).isThrownBy(provider::getObject); | ||
| assertThatExceptionOfType(NoUniqueBeanDefinitionException.class).isThrownBy(provider::getIfAvailable); | ||
| assertThat(provider.getIfUnique()).isNull(); | ||
| } | ||
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| } |