example for reproducing various exceptions

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/cause1/BeanA.java

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+package org.baeldung.ex.beancreationexception.cause1;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    @Autowired
+    private BeanB dependency;
+
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/cause1/BeanB.java

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+package org.baeldung.ex.beancreationexception.cause1;
+
+public class BeanB {
+    //
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/cause2/BeanA.java

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+package org.baeldung.ex.beancreationexception.cause2;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    @Autowired
+    private IBeanB dependency;
+
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/cause2/BeanB1.java

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+package org.baeldung.ex.beancreationexception.cause2;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB1 implements IBeanB {
+    //
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/cause2/BeanB2.java

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+package org.baeldung.ex.beancreationexception.cause2;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB2 implements IBeanB {
+    //
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/cause2/IBeanB.java

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+package org.baeldung.ex.beancreationexception.cause2;
+
+public interface IBeanB {
+    //
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/cause3/BeanA.java

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+package org.baeldung.ex.beancreationexception.cause3;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    public BeanA() {
+        super();
+        throw new NullPointerException();
+    }
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/spring/Cause1ContextWithJavaConfig.java

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+package org.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("org.baeldung.ex.beancreationexception.cause1")
+public class Cause1ContextWithJavaConfig {
+
+    public Cause1ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/spring/Cause2ContextWithJavaConfig.java

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+package org.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("org.baeldung.ex.beancreationexception.cause2")
+public class Cause2ContextWithJavaConfig {
+
+    public Cause2ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/spring/Cause3ContextWithJavaConfig.java

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+package org.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("org.baeldung.ex.beancreationexception.cause3")
+public class Cause3ContextWithJavaConfig {
+
+    public Cause3ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}

spring-exceptions/src/main/java/org/baeldung/ex/beancreationexception/spring/Cause4ContextWithJavaConfig.java

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+package org.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("org.baeldung.ex.beancreationexception.cause4")
+public class Cause4ContextWithJavaConfig {
+
+    public Cause4ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}

spring-exceptions/src/test/java/org/baeldung/ex/beancreationexception/Cause1BeanCreationExceptionIntegrationTest.java

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+package org.baeldung.ex.beancreationexception;
+
+import org.baeldung.ex.beancreationexception.spring.Cause1ContextWithJavaConfig;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { Cause1ContextWithJavaConfig.class }, loader = AnnotationConfigContextLoader.class)
+public class Cause1BeanCreationExceptionIntegrationTest {
+
+    @Test
+    public final void givenContextIsInitialized_thenNoException() {
+        //
+    }
+
+}

spring-exceptions/src/test/java/org/baeldung/ex/beancreationexception/Cause2BeanCreationExceptionIntegrationTest.java

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+package org.baeldung.ex.beancreationexception;
+
+import org.baeldung.ex.beancreationexception.spring.Cause2ContextWithJavaConfig;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { Cause2ContextWithJavaConfig.class }, loader = AnnotationConfigContextLoader.class)
+public class Cause2BeanCreationExceptionIntegrationTest {
+
+    @Test
+    public final void givenContextIsInitialized_thenNoException() {
+        //
+    }
+
+}

spring-exceptions/src/test/java/org/baeldung/ex/beancreationexception/Cause3BeanCreationExceptionIntegrationTest.java

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+package org.baeldung.ex.beancreationexception;
+
+import org.baeldung.ex.beancreationexception.spring.Cause3ContextWithJavaConfig;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { Cause3ContextWithJavaConfig.class }, loader = AnnotationConfigContextLoader.class)
+public class Cause3BeanCreationExceptionIntegrationTest {
+
+    @Test
+    public final void givenContextIsInitialized_thenNoException() {
+        //
+    }
+
+}

spring-exceptions/src/test/java/org/baeldung/ex/beancreationexception/Cause4BeanCreationExceptionIntegrationTest.java

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+package org.baeldung.ex.beancreationexception;
+
+import org.baeldung.ex.beancreationexception.spring.Cause4ContextWithJavaConfig;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { Cause4ContextWithJavaConfig.class }, loader = AnnotationConfigContextLoader.class)
+public class Cause4BeanCreationExceptionIntegrationTest {
+
+    @Test
+    public final void givenContextIsInitialized_thenNoException() {
+        //
+    }
+
+}