IntelliJ + JUnit 5（木星）
我的build.gradle有：
testCompile 'org.junit.jupiter:junit-jupiter-api:5.0.0'
使用http://junit.org/junit5/docs/current/user-guide/中的标准示例
import static org.junit.jupiter.api.Assertions.assertEquals; import org.junit.jupiter.api.Test; class FirstJUnit5Tests { @Test void myFirstTest() { assertEquals(2, 1 + 1); } }
当我尝试在IntelliJ 2017.2.3中作为JUnit测试运行时，我得到：
objc[32347]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/bin/java (0x10f5be4c0) and /Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/libinstrument.dylib (0x10f6864e0). One of the two will be used. Which one is undefined. Sep 11, 2017 12:39:04 PM org.junit.platform.launcher.core.DefaultLauncher handleThrowable WARNING: TestEngine with ID 'junit-jupiter' failed to discover tests java.lang.NoSuchMethodError: org.junit.platform.commons.util.ClassUtils.isKotlinClass(Ljava/lang/Class;)Z at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$getTestInstanceLifecycle$14(ClassTestDescriptor.java:299) at java.util.Optional.orElseGet(Optional.java:267) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.getTestInstanceLifecycle(ClassTestDescriptor.java:299) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.<init>(ClassTestDescriptor.java:87) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.<init>(ClassTestDescriptor.java:77) at org.junit.jupiter.engine.discovery.TestContainerResolver.resolveClass(TestContainerResolver.java:100) at org.junit.jupiter.engine.discovery.TestContainerResolver.resolveElement(TestContainerResolver.java:45) at org.junit.jupiter.engine.discovery.JavaElementsResolver.tryToResolveWithResolver(JavaElementsResolver.java:169) at org.junit.jupiter.engine.discovery.JavaElementsResolver.lambda$resolve$8(JavaElementsResolver.java:156) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolve(JavaElementsResolver.java:159) at org.junit.jupiter.engine.discovery.JavaElementsResolver.lambda$resolveForAllParents$4(JavaElementsResolver.java:130) at java.util.Collections$SingletonSet.forEach(Collections.java:4767) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveForAllParents(JavaElementsResolver.java:130) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveContainerWithParents(JavaElementsResolver.java:80) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveClass(JavaElementsResolver.java:55) at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.lambda$resolveSelectors$2(DiscoverySelectorResolver.java:59) at java.util.ArrayList.forEach(ArrayList.java:1249) at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.resolveSelectors(DiscoverySelectorResolver.java:58) at org.junit.jupiter.engine.JupiterTestEngine.resolveDiscoveryRequest(JupiterTestEngine.java:68) at org.junit.jupiter.engine.JupiterTestEngine.discover(JupiterTestEngine.java:61) at org.junit.platform.launcher.core.DefaultLauncher.discoverEngineRoot(DefaultLauncher.java:130) at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:117) at org.junit.platform.launcher.core.DefaultLauncher.discover(DefaultLauncher.java:82) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:48) at com.intellij.rt.execution.junit.IdeaTestRunner$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) Sep 11, 2017 12:39:04 PM org.junit.platform.launcher.core.DefaultLauncher handleThrowable WARNING: TestEngine with ID 'junit-jupiter' failed to discover tests java.lang.NoSuchMethodError: org.junit.platform.commons.util.ClassUtils.isKotlinClass(Ljava/lang/Class;)Z at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$getTestInstanceLifecycle$14(ClassTestDescriptor.java:299) at java.util.Optional.orElseGet(Optional.java:267) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.getTestInstanceLifecycle(ClassTestDescriptor.java:299) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.<init>(ClassTestDescriptor.java:87) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.<init>(ClassTestDescriptor.java:77) at org.junit.jupiter.engine.discovery.TestContainerResolver.resolveClass(TestContainerResolver.java:100) at org.junit.jupiter.engine.discovery.TestContainerResolver.resolveElement(TestContainerResolver.java:45) at org.junit.jupiter.engine.discovery.JavaElementsResolver.tryToResolveWithResolver(JavaElementsResolver.java:169) at org.junit.jupiter.engine.discovery.JavaElementsResolver.lambda$resolve$8(JavaElementsResolver.java:156) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolve(JavaElementsResolver.java:159) at org.junit.jupiter.engine.discovery.JavaElementsResolver.lambda$resolveForAllParents$4(JavaElementsResolver.java:130) at java.util.Collections$SingletonSet.forEach(Collections.java:4767) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveForAllParents(JavaElementsResolver.java:130) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveContainerWithParents(JavaElementsResolver.java:80) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveClass(JavaElementsResolver.java:55) at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.lambda$resolveSelectors$2(DiscoverySelectorResolver.java:59) at java.util.ArrayList.forEach(ArrayList.java:1249) at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.resolveSelectors(DiscoverySelectorResolver.java:58) at org.junit.jupiter.engine.JupiterTestEngine.resolveDiscoveryRequest(JupiterTestEngine.java:68) at org.junit.jupiter.engine.JupiterTestEngine.discover(JupiterTestEngine.java:61) at org.junit.platform.launcher.core.DefaultLauncher.discoverEngineRoot(DefaultLauncher.java:130) at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:117) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:62) at com.intellij.rt.execution.junit.IdeaTestRunner$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) Process finished with exit code 0 Empty test suite.
我根本不使用Kotlin，所以我发现那些警告+堆栈痕迹很奇怪。 其次，它没有运行测试。 有任何想法吗？
IDEA版本2017.2.3及更早版本随JUnit 5的过期版本一起提供。
使用这个来解决这个问题，直到5.0 GA被捆绑在IDEA中
// Only needed to run tests in an IntelliJ IDEA that bundles an older version testRuntime("org.junit.platform:junit-platform-launcher:1.0.0") testRuntime("org.junit.jupiter:junit-jupiter-engine:5.0.0") testRuntime("org.junit.vintage:junit-vintage-engine:4.12.0")
有关详细信息，请参阅http://junit.org/junit5/docs/current/user-guide/#running-tests-ide-intellij-idea 。