java.lang.IllegalArgumentException: 无法实例化接口 org.springframework.context.ApplicationListener
java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationListener
我是 Mockito 的新手，我正在尝试为 Main Class 编写单元测试，但遇到一些无法实例化 bean 的问题。请任何人帮我解决这个问题。如果有人给我建议如何在 mockito 中为以下 class.
编写单元测试
主要class
import com.ab.obs.spring.ObsSpringBootApplicationForCloud;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import com.ab.obs.config.EncryptDecryptUtilConfig;
import com.ab.csl.retail.core.config.HikariDataSourceConfig;
import org.springframework.context.annotation.Import;
@Import({EncryptDecryptUtilConfig.class, HikariDataSourceConfig.class})
@SpringBootApplication
@EnableAspectJAutoProxy
public class ObsDocumentApplication extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
ObsSpringBootApplicationForCloud.initBase(application, "csl-svc-obs-test");
return application;
}
public static void main(String[] args) {
SpringApplicationBuilder application = new SpringApplicationBuilder();
ObsSpringBootApplicationForCloud.initBase(application, "csl-svc-obs-test");
application.sources(ObsDocumentApplication.class)
.run(args);
}
}
在此处测试 Class：
import com.ab.obs.spring.ObsSpringBootApplicationForCloud;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import org.springframework.boot.builder.SpringApplicationBuilder;
import static org.powermock.api.mockito.PowerMockito.*;
@RunWith(PowerMockRunner.class)
@PrepareForTest({ObsDocumentApplication.class, ObsSpringBootApplicationForCloud.class})
public class ObsDocumentApplicationTest {
@Mock
private SpringApplicationBuilder applicationBuilder;
@Before
public void setUp() throws Exception{
PowerMockito.spy(ObsDocumentApplication.class);
PowerMockito.spy(ObsSpringBootApplicationForCloud.class);
applicationBuilder = mock(SpringApplicationBuilder.class);
}
@Test
public void testMainClass() {
ObsDocumentApplication.main(new String[] {});
}
}
错误日志：
java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationListener : org.springframework.cloud.function.compiler.config.FunctionProxyApplicationListener
at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:467)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:449)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:442)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:285)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:264)
at org.springframework.boot.builder.SpringApplicationBuilder.createSpringApplication(SpringApplicationBuilder.java:109)
at org.springframework.boot.builder.SpringApplicationBuilder.<init>(SpringApplicationBuilder.java:97)
at com.sc.obs.ObsDocumentApplication.main(ObsDocumentApplication.java:25)
at com.sc.obs.ObsDocumentApplicationTest.testMainClass(ObsDocumentApplicationTest.java:31)
at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:89)
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:97)
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.function.compiler.config.FunctionProxyApplicationListener]: Constructor threw exception; nested exception is java.lang.ClassCastException: class com.sun.tools.javac.api.JavacTool
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:225)
at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:463)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:449)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:442)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:285)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:264)
at org.springframework.boot.builder.SpringApplicationBuilder.createSpringApplication(SpringApplicationBuilder.java:109)
at org.springframework.boot.builder.SpringApplicationBuilder.<init>(SpringApplicationBuilder.java:97)
at com.sc.obs.ObsDocumentApplication.main(ObsDocumentApplication.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.powermock.api.mockito.invocation.InvocationFactory.call(InvocationFactory.java:55)
at org.mockito.internal.invocation.RealMethod$FromCallable.call(RealMethod.java:40)
at org.mockito.internal.invocation.RealMethod$FromBehavior.invoke(RealMethod.java:62)
at org.mockito.internal.invocation.InterceptedInvocation.callRealMethod(InterceptedInvocation.java:141)
at org.mockito.internal.stubbing.answers.CallsRealMethods.answer(CallsRealMethods.java:44)
at org.mockito.Answers.answer(Answers.java:98)
at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:106)
at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)
at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:33)
at org.powermock.api.mockito.invocation.MockHandlerAdaptor.performIntercept(MockHandlerAdaptor.java:64)
at org.powermock.api.mockito.invocation.MockitoMethodInvocationControl.invoke(MockitoMethodInvocationControl.java:94)
at org.powermock.core.MockGateway.doMethodCall(MockGateway.java:186)
at org.powermock.core.MockGateway.doMethodCall(MockGateway.java:168)
at org.powermock.core.MockGateway.methodCall(MockGateway.java:145)
at com.sc.obs.ObsDocumentApplication.main(ObsDocumentApplication.java)
at com.sc.obs.ObsDocumentApplicationTest.testMainClass(ObsDocumentApplicationTest.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
为您的 Spring 引导入口点 class ObsDocumentApplication 编写单元测试没有什么价值，因为您最终得到的是您的实现的几乎完全相同的副本。
此类测试只能验证您的模拟设置是否与您的实现相匹配。对您的实现的任何更改很可能会导致单元测试失败，因为需要调整存根设置。
更好的方法是编写一个集成测试，确保您的 Spring ApplicationContext 可以启动（这将隐式验证您的 ObsDocumentApplication）。
您可以使用 the @SpringBootTest annotation 来达到这个目的。
我是 Mockito 的新手，我正在尝试为 Main Class 编写单元测试，但遇到一些无法实例化 bean 的问题。请任何人帮我解决这个问题。如果有人给我建议如何在 mockito 中为以下 class.
编写单元测试主要class
import com.ab.obs.spring.ObsSpringBootApplicationForCloud;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import com.ab.obs.config.EncryptDecryptUtilConfig;
import com.ab.csl.retail.core.config.HikariDataSourceConfig;
import org.springframework.context.annotation.Import;
@Import({EncryptDecryptUtilConfig.class, HikariDataSourceConfig.class})
@SpringBootApplication
@EnableAspectJAutoProxy
public class ObsDocumentApplication extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
ObsSpringBootApplicationForCloud.initBase(application, "csl-svc-obs-test");
return application;
}
public static void main(String[] args) {
SpringApplicationBuilder application = new SpringApplicationBuilder();
ObsSpringBootApplicationForCloud.initBase(application, "csl-svc-obs-test");
application.sources(ObsDocumentApplication.class)
.run(args);
}
}
在此处测试 Class：
import com.ab.obs.spring.ObsSpringBootApplicationForCloud;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import org.springframework.boot.builder.SpringApplicationBuilder;
import static org.powermock.api.mockito.PowerMockito.*;
@RunWith(PowerMockRunner.class)
@PrepareForTest({ObsDocumentApplication.class, ObsSpringBootApplicationForCloud.class})
public class ObsDocumentApplicationTest {
@Mock
private SpringApplicationBuilder applicationBuilder;
@Before
public void setUp() throws Exception{
PowerMockito.spy(ObsDocumentApplication.class);
PowerMockito.spy(ObsSpringBootApplicationForCloud.class);
applicationBuilder = mock(SpringApplicationBuilder.class);
}
@Test
public void testMainClass() {
ObsDocumentApplication.main(new String[] {});
}
}
错误日志：
java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationListener : org.springframework.cloud.function.compiler.config.FunctionProxyApplicationListener
at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:467)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:449)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:442)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:285)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:264)
at org.springframework.boot.builder.SpringApplicationBuilder.createSpringApplication(SpringApplicationBuilder.java:109)
at org.springframework.boot.builder.SpringApplicationBuilder.<init>(SpringApplicationBuilder.java:97)
at com.sc.obs.ObsDocumentApplication.main(ObsDocumentApplication.java:25)
at com.sc.obs.ObsDocumentApplicationTest.testMainClass(ObsDocumentApplicationTest.java:31)
at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:89)
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:97)
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.function.compiler.config.FunctionProxyApplicationListener]: Constructor threw exception; nested exception is java.lang.ClassCastException: class com.sun.tools.javac.api.JavacTool
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:225)
at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:463)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:449)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:442)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:285)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:264)
at org.springframework.boot.builder.SpringApplicationBuilder.createSpringApplication(SpringApplicationBuilder.java:109)
at org.springframework.boot.builder.SpringApplicationBuilder.<init>(SpringApplicationBuilder.java:97)
at com.sc.obs.ObsDocumentApplication.main(ObsDocumentApplication.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.powermock.api.mockito.invocation.InvocationFactory.call(InvocationFactory.java:55)
at org.mockito.internal.invocation.RealMethod$FromCallable.call(RealMethod.java:40)
at org.mockito.internal.invocation.RealMethod$FromBehavior.invoke(RealMethod.java:62)
at org.mockito.internal.invocation.InterceptedInvocation.callRealMethod(InterceptedInvocation.java:141)
at org.mockito.internal.stubbing.answers.CallsRealMethods.answer(CallsRealMethods.java:44)
at org.mockito.Answers.answer(Answers.java:98)
at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:106)
at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)
at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:33)
at org.powermock.api.mockito.invocation.MockHandlerAdaptor.performIntercept(MockHandlerAdaptor.java:64)
at org.powermock.api.mockito.invocation.MockitoMethodInvocationControl.invoke(MockitoMethodInvocationControl.java:94)
at org.powermock.core.MockGateway.doMethodCall(MockGateway.java:186)
at org.powermock.core.MockGateway.doMethodCall(MockGateway.java:168)
at org.powermock.core.MockGateway.methodCall(MockGateway.java:145)
at com.sc.obs.ObsDocumentApplication.main(ObsDocumentApplication.java)
at com.sc.obs.ObsDocumentApplicationTest.testMainClass(ObsDocumentApplicationTest.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
为您的 Spring 引导入口点 class ObsDocumentApplication 编写单元测试没有什么价值，因为您最终得到的是您的实现的几乎完全相同的副本。
此类测试只能验证您的模拟设置是否与您的实现相匹配。对您的实现的任何更改很可能会导致单元测试失败，因为需要调整存根设置。
更好的方法是编写一个集成测试，确保您的 Spring ApplicationContext 可以启动（这将隐式验证您的 ObsDocumentApplication）。
您可以使用 the @SpringBootTest annotation 来达到这个目的。