Description Kira Resari 2020-03-09 11:09:34 EDT

I am trying to create a test case suite that runs JUnit 5 test cases, but have run into the following very obscure error:

```
java.lang.NoSuchMethodError: org.junit.runner.Description.createSuiteDescription(Ljava/lang/String;Ljava/io/Serializable;[Ljava/lang/annotation/Annotation;)Lorg/junit/runner/Description;
    at org.junit.platform.runner.JUnitPlatformTestTree.createJUnit4Description(JUnitPlatformTestTree.java:108)
    at org.junit.platform.runner.JUnitPlatformTestTree.buildDescription(JUnitPlatformTestTree.java:95)
    at org.junit.platform.runner.JUnitPlatformTestTree.lambda$buildDescriptionTree$0(JUnitPlatformTestTree.java:86)
    at java.lang.Iterable.forEach(Unknown Source)
    at java.util.Collections$SynchronizedCollection.forEach(Unknown Source)
    at java.util.Collections$UnmodifiableCollection.forEach(Unknown Source)
    at org.junit.platform.runner.JUnitPlatformTestTree.buildDescriptionTree(JUnitPlatformTestTree.java:86)
    at org.junit.platform.runner.JUnitPlatformTestTree.generateSuiteDescription(JUnitPlatformTestTree.java:72)
    at org.junit.platform.runner.JUnitPlatformTestTree.<init>(JUnitPlatformTestTree.java:50)
    at org.junit.platform.runner.JUnitPlatform.generateTestTree(JUnitPlatform.java:144)
    at org.junit.platform.runner.JUnitPlatform.<init>(JUnitPlatform.java:129)
    at org.junit.platform.runner.JUnitPlatform.<init>(JUnitPlatform.java:122)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:31)
    at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
    at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
    at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:90)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:76)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:49)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:526)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:770)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:464)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
```

My current investigations has shown that:

* The faulting method, `org.junit.runner.Description.createSuiteDescription` exists with the following signature:

```
public static Description createSuiteDescription(String name, Annotation... annotations)
```

* However, for some reason, it is called with the following parameters instead:

```
createSuiteDescription(Ljava/lang/String;Ljava/io/Serializable;[Ljava/lang/annotation/Annotation;)
```

* This is weird, since I have confirmed in the next step down the stack trace (in JUnitPlatformTestTree.java:108), that the call there calls the function as follows:

```
return Description.createSuiteDescription(name, identifier.getUniqueId());
```

I have also tried this with different versions of the JUnit platform now, but still continue to run into this error. Thus I believe the error might be related to eclipse, especially since that is where the stack trace leads at the very bottom level. I can't say for sure though, since this error is very obscure to me.

For reference, the class that causes this is looking as follows:

```
import org.junit.platform.runner.JUnitPlatform;
import org.junit.platform.suite.api.SelectClasses;
import org.junit.runner.RunWith;


import io.cesonia.camelot.knight.database.MongoDBOperationsTest;

@RunWith(JUnitPlatform.class)

@SelectClasses({
	MongoDBOperationsTest.class
})

public class KnightTestCaseSuite {
	
}
```

While my Gradle imports look as follows:

```
    testCompile 'com.tngtech.jgiven:jgiven-junit5:0.15.2'
    testCompile('org.junit.jupiter:junit-jupiter:5.6.0')
    testCompile('org.junit.platform:junit-platform-runner:1.5.2')
    testCompile('org.junit.platform:junit-platform-suite-api:1.5.2')
    testCompile('org.junit.platform:junit-platform-launcher:1.5.2')
    testCompile('org.junit.platform:junit-platform-engine:1.5.2')
    testCompile('org.junit.platform:junit-platform-commons:1.5.2')
	testImplementation 'junit:junit:4.12'
```