NoSuchMethodError: org.junit.platform.commons.util.ReflectionUtils.tryToLoadClass

问题

I have the test that leads to error. I tried to execute it in the IntelliJ Idea 2018.3.2. All jupiter and junit dependencies have version RELEASE

The full text of error:

Dec 26, 2018 1:17:17 AM org.junit.platform.launcher.core.DefaultLauncher handleThrowable
WARNING: TestEngine with ID 'junit-jupiter' failed to execute tests
java.lang.NoSuchMethodError: org.junit.platform.commons.util.ReflectionUtils.tryToLoadClass(Ljava/lang/String;)Lorg/junit/platform/commons/function/Try;
at org.junit.jupiter.engine.support.OpenTest4JAndJUnit4AwareThrowableCollector.createAbortedExecutionPredicate(OpenTest4JAndJUnit4AwareThrowableCollector.java:40)
at org.junit.jupiter.engine.support.OpenTest4JAndJUnit4AwareThrowableCollector.<clinit>(OpenTest4JAndJUnit4AwareThrowableCollector.java:30)
at org.junit.jupiter.engine.support.JupiterThrowableCollectorFactory.createThrowableCollector(JupiterThrowableCollectorFactory.java:34)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:68)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74)
at com.intellij.rt.execution.junit.IdeaTestRunner$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)

the test has the following view

import biz.Services.msg.BookTimeMsgService;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import static org.junit.jupiter.api.Assertions.assertTrue;

@ExtendWith(MockitoExtension.class)
public class MsgReceiverTest {

@Mock
BookTimeMsgService bookTimeMsgService;

@InjectMocks
MsgReceiver msgReceiver;

@Test
public void msgReceiverTest_bookTimeServiceShouldObtainMsg() {
    assertTrue(true);
}

part of my pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.1.RELEASE</version>
</parent>

   <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-api</artifactId>
        <version>RELEASE</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.junit</groupId>
        <artifactId>junit-bom</artifactId>
        <version>RELEASE</version>
        <type>pom</type>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-junit-jupiter</artifactId>
        <version>RELEASE</version>
        <scope>test</scope>
    </dependency>

How to fix the issue?

回答1:

I changed the version of jupiter and junit to 5.3.2 and the problem has gone

回答2:

I was able to run the Junit 5 tests after adding the platform and launcher dependency:

<!-- https://mvnrepository.com/artifact/org.junit.platform/junit-platform-commons -->
<dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-commons</artifactId>
    <version>1.4.0</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.junit.platform/junit-platform-launcher -->
<dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-launcher</artifactId>
    <version>1.4.0</version>
    <scope>test</scope>
</dependency>

回答3:

minimal required pom.xml setup for spring-boot 2.1.3 and junit 5.4.0 testing next:

<?xml version="1.0" encoding="UTF-8"?>
<project ...>
  <parent>
    <groupId>org.springframework.boot</g..roupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.3.RELEASE</version>
    <relativePath/>
  </parent>

  <properties>
    <junit-jupiter.version>5.4.0</junit-jupiter.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

回答4:

use:

<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter</artifactId>
    <version>5.4.2</version>
    <scope>test</scope>
</dependency>

instead

<dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <scope>test</scope>
</dependency>
<dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <scope>test</scope>
</dependency>

you can find more details here

来源：https://stackoverflow.com/questions/53926264/nosuchmethoderror-org-junit-platform-commons-util-reflectionutils-trytoloadclas