Errors while running JUnit 5 tests in IntelliJ IDEA 2018.1
Solution 1
Turned out I had an 'extra' library in my classpath - org.junit.vintage:junit-vintage-engine. Removing it from classpath fixed the errors.
Solution 2
I got the same exceptions when running my tests even though my tests ran successfully. In my case, I was trying to run both JUnit4 and JUnit5 tests in the same project. This post helped me a lot.
At first, I copied the same configuration, but when I tried to run
mvn install
, the JUnit 5 tests were skipped. Changing the surefire.version
to 2.22.0 fixed it. I removed the junit-platform-surefire-provider
dependency because it is not needed anymore (please see this answer). Although, in my case, junit-jupiter-engine
is needed else mvn install
doesn't work.
Now, I can run my tests successfully and without warnings. Hope it helps someone else.
Related videos on Youtube
Anurag Bhandari
Software Engineer at Automattic Watcher of Sports Matches Player of Video Games Reader of Books
Updated on June 04, 2022Comments
-
Anurag Bhandari almost 2 years
I am new to IDEA and Gradle ecosystems, so please forgive me for asking basic questions, if any.
It's been close to 2 years since IntelliJ officially announced the support for JUnit 5. For some reason, IDEA still hates JUnit 5. If you follow the official instructions to add JUnit support, IDEA defaults to JUnit 4.12.
Anyway, after reading around I think I've correctly set up dependencies in my build.gradle:
dependencies { testCompile("org.junit.platform:junit-platform-launcher:1.2.0") testCompile("org.junit.jupiter:junit-jupiter-engine:5.2.0") testCompile("org.junit.vintage:junit-vintage-engine:5.2.0") }
I have all of these in my classpath. Plus, I figured out myself to manually add opentest4j-1.1.0.jar in my classpath.
I followed these instructions to create a new run configuration for JUnit. The tests do run successfully, but along with test runner's output I get plenty of exceptions as follows. Am I doing something wrong?
"C:\Program Files\Java\jdk-10.0.1\bin\java.exe" -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2018.1.5\lib\idea_rt.jar=57664:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2018.1.5\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2018.1.5\lib\idea_rt.jar;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2018.1.5\plugins\junit\lib\junit-rt.jar;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2018.1.5\plugins\junit\lib\junit5-rt.jar;C:\Users\anurag.x.bhandari\IdeaProjects\HackerRankCodingInterview\out\test\Solutions;C:\Users\anurag.x.bhandari\IdeaProjects\HackerRankCodingInterview\out\production\Solutions;C:\Users\anurag.x.bhandari\.gradle\caches\modules-2\files-2.1\org.junit.jupiter\junit-jupiter-api\5.2.0\9cd901df48d88d8e605a6ccb2c3f140c92db6bf2\junit-jupiter-api-5.2.0.jar;C:\Users\anurag.x.bhandari\IdeaProjects\HackerRankCodingInterview\libs\opentest4j-1.1.0.jar;C:\Users\anurag.x.bhandari\.gradle\caches\modules-2\files-2.1\org.junit.platform\junit-platform-launcher\1.2.0\ea230ba8c0b71943d4dd2bb215ca29041c89966e\junit-platform-launcher-1.2.0.jar;C:\Users\anurag.x.bhandari\.gradle\caches\modules-2\files-2.1\org.junit.jupiter\junit-jupiter-engine\5.2.0\de87318ccd3dfa1a98ebfef792d362776f1914de\junit-jupiter-engine-5.2.0.jar;C:\Users\anurag.x.bhandari\.gradle\caches\modules-2\files-2.1\org.junit.platform\junit-platform-commons\1.2.0\dbce1d822d3dc6c61703b340cd79018518685451\junit-platform-commons-1.2.0.jar;C:\Users\anurag.x.bhandari\.gradle\caches\modules-2\files-2.1\org.junit.vintage\junit-vintage-engine\5.2.0\ff11a5d0674df5e2264e50fe3f8a3485a4399ccb\junit-vintage-engine-5.2.0.jar;C:\Users\anurag.x.bhandari\.gradle\caches\modules-2\files-2.1\org.junit.platform\junit-platform-engine\1.2.0\35fa3529ce843ada1a10b0909ccb4a8148ee638d\junit-platform-engine-1.2.0.jar" com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit5 @w@C:\Users\anurag.x.bhandari\AppData\Local\Temp\idea_working_dirs_junit.tmp @C:\Users\anurag.x.bhandari\AppData\Local\Temp\idea_junit.tmp -socket57663 Jun 21, 2018 9:26:48 PM org.junit.platform.launcher.core.DefaultLauncher handleThrowable WARNING: TestEngine with ID 'junit-vintage' failed to discover tests java.lang.NoClassDefFoundError: org/junit/runners/model/RunnerBuilder at org.junit.vintage.engine.discovery.VintageDiscoverer.<init>(VintageDiscoverer.java:35) at org.junit.vintage.engine.VintageTestEngine.discover(VintageTestEngine.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:52) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) Caused by: java.lang.ClassNotFoundException: org.junit.runners.model.RunnerBuilder at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) ... 9 more Jun 21, 2018 9:26:49 PM org.junit.platform.launcher.core.DefaultLauncher handleThrowable WARNING: TestEngine with ID 'junit-vintage' failed to discover tests java.lang.NoClassDefFoundError: org/junit/runners/model/RunnerBuilder at org.junit.vintage.engine.discovery.VintageDiscoverer.<init>(VintageDiscoverer.java:35) at org.junit.vintage.engine.VintageTestEngine.discover(VintageTestEngine.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:74) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) Caused by: java.lang.ClassNotFoundException: org.junit.runners.model.RunnerBuilder at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) ... 9 more Expected :<1> Actual :<5> <Click to see difference> org.opentest4j.MultipleFailuresError: Multiple Failures (1 failure) array contents differ at index [0], expected: <1> but was: <5> at org.junit.jupiter.api.AssertAll.assertAll(AssertAll.java:79) at org.junit.jupiter.api.AssertAll.assertAll(AssertAll.java:45) at org.junit.jupiter.api.AssertAll.assertAll(AssertAll.java:39) at org.junit.jupiter.api.Assertions.assertAll(Assertions.java:1060) at com.anuragbhandari.hackerrank.CorrectnessTests.checkLeftRotationOutput(ArrayLeftRotationTests.java:22) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:564) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:513) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:170) at org.junit.jupiter.engine.execution.ThrowableCollector.execute(ThrowableCollector.java:40) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:166) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:113) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:58) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$3(HierarchicalTestExecutor.java:113) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.executeRecursively(HierarchicalTestExecutor.java:108) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:79) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$2(HierarchicalTestExecutor.java:121) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$3(HierarchicalTestExecutor.java:121) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.executeRecursively(HierarchicalTestExecutor.java:108) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:79) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$2(HierarchicalTestExecutor.java:121) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$3(HierarchicalTestExecutor.java:121) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.executeRecursively(HierarchicalTestExecutor.java:108) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:79) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:55) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:43) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:170) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:154) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74) at com.intellij.rt.execution.junit.IdeaTestRunner$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) Process finished with exit code -1
My tests look like this:
package com.anuragbhandari.hackerrank; import static org.junit.jupiter.api.Assertions.assertAll; import static org.junit.jupiter.api.Assertions.assertArrayEquals; import org.junit.jupiter.api.DisplayName; import org.junit.jupiter.api.Nested; import org.junit.jupiter.api.Test; @Nested @DisplayName("given a valid array of integers and a rotation count") class CorrectnessTests { @Test @DisplayName("perform the given number of left rotations and return the correct output") void checkLeftRotationOutput() { int[] arrayOne = new int[] {1, 2, 3, 4, 5}; int arrayOneRotations = 4; int[] arrayOneRotated = new int[] {5, 1, 2, 3, 4}; int[] arrayTwo = new int[] {41, 73, 89, 7, 10, 1, 59, 58, 84, 77, 77, 97, 58, 1, 86, 58, 26, 10, 86, 51}; int arrayTwoRotations = 10; int[] arrayTwoRotated = new int[] {77, 97, 58, 1, 86, 58, 26, 10, 86, 51, 41, 73, 89, 7, 10, 1, 59, 58, 84, 77}; assertAll(() -> assertArrayEquals(arrayOneRotated, ArrayLeftRotation.rotLeft(arrayOne, arrayOneRotations)), () -> assertArrayEquals(arrayTwoRotated, ArrayLeftRotation.rotLeft(arrayTwo, arrayTwoRotations))); } }
-
sam over 2 years1st link is dead