CODEWITHSUNDEEP
javagradleintellij-ideajunit5
BitPusher
BitPusher

Reputation: 1030

Unable to run JUnit 5 test in IntelliJ 2018.2.2 w/ Gradle 4.9

I'm attempting to run a single JUnit 5 unit test from Intelli 2018.2.2 Community Edition. The project is using Gradle v4.9.

For whatever reason, when attempting to run the test method individually or as a test class, the same output results:

Aug 29, 2018 3:37:47 PM 
org.junit.platform.launcher.core.DefaultLauncher handleThrowable
WARNING: TestEngine with ID 'junit-jupiter' failed to discover tests
org.junit.platform.commons.util.PreconditionViolationException: Could not load class with name: MinHeapTest
at org.junit.platform.engine.discovery.ClassSelector.lambda$getJavaClass$0(ClassSelector.java:73)
at java.util.Optional.orElseThrow(Optional.java:290)
at org.junit.platform.engine.discovery.ClassSelector.getJavaClass(ClassSelector.java:72)
at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.lambda$resolve$3(DiscoverySelectorResolver.java:69)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.resolve(DiscoverySelectorResolver.java:68)
at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.resolveSelectors(DiscoverySelectorResolver.java:50)
at org.junit.jupiter.engine.JupiterTestEngine.discover(JupiterTestEngine.java:61)
at org.junit.platform.launcher.core.DefaultLauncher.discoverEngineRoot(DefaultLauncher.java:130)
at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:117)
at org.junit.platform.launcher.core.DefaultLauncher.discover(DefaultLauncher.java:82)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:52)
at com.intellij.rt.execution.junit.IdeaTestRunner$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)

Aug 29, 2018 3:37:47 PM org.junit.platform.launcher.core.DefaultLauncher handleThrowable
WARNING: TestEngine with ID 'junit-jupiter' failed to discover tests
org.junit.platform.commons.util.PreconditionViolationException: Could not load class with name: MinHeapTest
at org.junit.platform.engine.discovery.ClassSelector.lambda$getJavaClass$0(ClassSelector.java:73)
at java.util.Optional.orElseThrow(Optional.java:290)
at org.junit.platform.engine.discovery.ClassSelector.getJavaClass(ClassSelector.java:72)
at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.lambda$resolve$3(DiscoverySelectorResolver.java:69)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.resolve(DiscoverySelectorResolver.java:68)
at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.resolveSelectors(DiscoverySelectorResolver.java:50)
at org.junit.jupiter.engine.JupiterTestEngine.discover(JupiterTestEngine.java:61)
at org.junit.platform.launcher.core.DefaultLauncher.discoverEngineRoot(DefaultLauncher.java:130)
at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:117)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74)
at com.intellij.rt.execution.junit.IdeaTestRunner$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 0
Empty test suite.

Running gradle test on the command line runs just fine.

The Gradle configuration is: apply plugin: 'java'

repositories {
    jcenter()
}

dependencies {
    testCompile("org.junit.jupiter:junit-jupiter-api:5.2.0")
    testRuntime("org.junit.jupiter:junit-jupiter-engine:5.2.0")
}

test {
    useJUnitPlatform()
}

I've read about vaguely similar issues w/ IntelliJ 2016, but not more recent builds.

Anyone else run into this issue? Seems like InteliJ is using some other means to launch the tests than Gradle, but its unclear what.

For good measure, I checked YouTrack for similar stack traces to no avail.

Pointers appreciated!

Upvotes: 1

Views: 3646

Answers (1)

Rmahajan
Rmahajan

Reputation: 1371

Can you please your setting in IntelliJ ? You must open the Preferences or Settings dialog window. There you can search for Gradle and then look for Build, Execution, Deployment | Build Tools | Gradle | Runner and Select Gradle Test Runner.

By default it is Platform Test Runner

Upvotes: 2

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