Introduce test for Bean Override for "broken" FactoryBean

See gh-33800

Author: sbrannen

spring-test/src/test/java/org/springframework/test/context/bean/override/mockito/MockitoBeanForBrokenFactoryBeanIntegrationTests.java

@@ -0,0 +1,86 @@
+/*
+ * 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.
+ */
+
+package org.springframework.test.context.bean.override.mockito;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.BeanCreationException;
+import org.springframework.beans.factory.FactoryBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.BDDMockito.when;
+
+/**
+ * Test {@link MockitoBean @MockitoBean} for a {@link FactoryBean} that is
+ * "broken" or not able to be eagerly initialized.
+ *
+ * @author Sam Brannen
+ * @author Simon Baslé
+ */
+@SpringJUnitConfig
+public class MockitoBeanForBrokenFactoryBeanIntegrationTests {
+
+	@MockitoBean
+	TestBean testBean;
+
+
+	@Test
+	void beanReturnedByFactoryIsMocked(@Autowired TestBean autowiredTestBean) {
+		assertThat(autowiredTestBean).isSameAs(testBean);
+
+		when(testBean.hello()).thenReturn("mock");
+
+		assertThat(testBean.hello()).isEqualTo("mock");
+	}
+
+
+	@Configuration(proxyBeanMethods = false)
+	static class Config {
+
+		@Bean
+		TestFactoryBean testFactoryBean() {
+			return new TestFactoryBean();
+		}
+	}
+
+	static class TestFactoryBean implements FactoryBean<TestBean> {
+
+		TestFactoryBean() {
+			throw new BeanCreationException("simulating missing dependencies");
+		}
+
+		@Override
+		public TestBean getObject() {
+			return () -> "prod";
+		}
+
+		@Override
+		public Class<?> getObjectType() {
+			return TestBean.class;
+		}
+	}
+
+	interface TestBean {
+
+		String hello();
+	}
+
+}