title: NoClassDefFoundError on org.springframework.boot.test.mock.mockito.MockReset
body: <p>I am trying to write Junit for my Spring Boot REST application, but my test is failing with NoClassDefFoundError. Although, the jar is present in the classpath. I have tried multiple different annotations,but it is still failing at same place </p>
  
  <p>Following are my classs</p>
  
  <p><strong>Application.java</strong></p>
  
  <p>package com.test;</p>
  
  <pre><code>import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;
  import org.springframework.boot.builder.SpringApplicationBuilder;
  import org.springframework.boot.web.support.SpringBootServletInitializer;
  
  @SpringBootApplication
  public class Application extends SpringBootServletInitializer{
  
  public static void main(String[] args) {
      SpringApplication.run(Application.class, args);
  }
  
  @Override
  protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
      return application.sources(Application.class);
  }
  }
  </code></pre>
  
  <p><strong>BusinessServiceController.java</strong></p>
  
  <pre><code>package com.test;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.http.HttpStatus;
  import org.springframework.http.ResponseEntity;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.RequestBody;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RestController;
  
  @RestController
  @RequestMapping("/business_services_WS")
  public class BusinessServiceController {
  
  Logger log = LoggerFactory.getLogger(BusinessServiceController.class);
  
  /**
   * 3.3.0 Request System Automation Limits [RSP-NSR]
   * @author eaggatu
   */
  @RequestMapping(value = "/number")    
  @PostMapping
  public ResponseEntity&lt;String&gt; numberQueryResponse(@RequestBody String responseObj) {
      log.info(responseObj);
      return ResponseEntity.status(HttpStatus.OK).body("Number Search Query called");
  }
  }
  </code></pre>
  
  <p><strong>Test Class</strong></p>
  
  <pre><code>package com.test;
  
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
  import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
  import org.springframework.http.MediaType;
  import org.springframework.test.context.junit4.SpringRunner;
  import org.springframework.test.web.servlet.MockMvc;
  import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
  import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
  import org.springframework.web.context.WebApplicationContext;
  
  import com.test.BusinessServiceController;
  
  /*@RunWith(SpringJUnit4ClassRunner.class)
  @WebAppConfiguration
  @SpringBootTest(classes={Application.class})
  */
  @RunWith(SpringRunner.class)
  @WebMvcTest(controllers = BusinessServiceController.class)
  // @SpringBootTest(classes={Application.class})
  @AutoConfigureMockMvc
  public class CallBackResponseSimulatorTest {
  
  @Autowired
  private WebApplicationContext context;
  @Autowired
  private MockMvc mvc;
  /*
   * @Before public void setup(){ mvc =
   * MockMvcBuilders.webAppContextSetup(context).build(); }
   */
  
  @Test
  public void callNumberSearchServiceSuccess() throws Exception {
      this.mvc.perform(MockMvcRequestBuilders.post("/CallBackResponseSimulator/business_services_WS/number")
              .contentType(MediaType.APPLICATION_JSON_UTF8).content("Hello! World"))
              .andExpect(MockMvcResultMatchers.content().json("Number Search Query called"))
              .andExpect(MockMvcResultMatchers.status().isOk());
  }
  }
  </code></pre>
  
  <p><strong>Stack Trace</strong></p>
  
  <pre><code>java.lang.IllegalAccessError: tried to access method org.mockito.internal.util.MockUtil.&lt;init&gt;()V from class org.springframework.boot.test.mock.mockito.MockReset
  at org.springframework.boot.test.mock.mockito.MockReset.&lt;clinit&gt;(MockReset.java:56)
  at org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener.beforeTestMethod(ResetMocksTestExecutionListener.java:45)
  at org.springframework.test.context.TestContextManager.beforeTestMethod(TestContextManager.java:269)
  at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
  at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
  at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
  at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
  at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
  at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
  at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
  at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
  at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
  at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
  at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
  at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
  at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
  
  java.lang.NoClassDefFoundError: Could not initialize class org.springframework.boot.test.mock.mockito.MockReset
  at org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener.afterTestMethod(ResetMocksTestExecutionListener.java:50)
  at org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:319)
  at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:94)
  at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
  at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
  at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
  at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
  at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
  at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
  at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
  at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
  at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
  at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
  at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
  </code></pre>
  
  <p><strong>Build.gradle</strong></p>
  
  <pre><code>        buildscript {
          repositories {
              mavenCentral()
          }
          dependencies {
              classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.1.RELEASE")
          }
      }
  
      apply plugin: 'java'
      apply plugin: 'eclipse'
      apply plugin: 'idea'
      apply plugin: 'spring-boot'
      apply plugin: 'war'
  
      jar {
          baseName = 'gs-rest-service'
          version =  '0.1.0'
      }
  
      repositories {
          mavenCentral()
          jcenter()
      }
  
      sourceCompatibility = 1.8
      targetCompatibility = 1.8
  
      dependencies {
          compile group: 'com.google.code.gson', name: 'gson', version: '2.7'
          compile("org.springframework.boot:spring-boot-starter-web")
  
          providedRuntime 'org.springframework.boot:spring-boot-starter-tomcat'    
          compile('org.springframework.boot:spring-boot-starter-test')
          compile 'junit:junit:4.12'
          compile group: 'org.mockito', name: 'mockito-core', version: '2.2.7'
      }
  </code></pre>