René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ClassLoader throws UnsupportedClassVersionError on test generation with Gradle project and JDK 13","articleBody":"**Description**\r\n\r\nClassLoader throws UnsupportedClassVersionError on test generation with Gradle project and JDK 13.\r\nNew runs of test generation **for the same class** - new errors are not shown, but tests are not generated.\r\nNew exception is thrown **for the new class** .\r\n\r\n**To Reproduce**\r\n\r\nSteps to reproduce the behavior:\r\n\r\n1. Open IntelliJ IDEA\r\n2. Reinstall [new version of plugin](https://github.com/UnitTestBot/UTBotJava/actions/runs/2583625708)\r\n3. Create a new Gradle project with JDK 13\r\n4. Add a simple class\r\n5. Generate tests with UTBot... with default settings\r\n\r\n**Expected behavior**\r\n\r\nTests are supposed to be generated.\r\n\r\n**Actual behavior**\r\n\r\nAn error is shown in IDE with the following stacktrace:\r\n\r\n```\r\njava.lang.UnsupportedClassVersionError: org/example/A has been compiled by a more recent version of the Java Runtime (class file version 57.0), this version of the Java Runtime only recognizes class file versions up to 55.0\r\n\tat java.base/java.lang.ClassLoader.defineClass1(Native Method)\r\n\tat java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)\r\n\tat java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)\r\n\tat java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:555)\r\n\tat java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:458)\r\n\tat java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:452)\r\n\tat java.base/java.security.AccessController.doPrivileged(Native Method)\r\n\tat java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:451)\r\n\tat java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)\r\n\tat java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)\r\n\tat org.utbot.intellij.plugin.ui.UtTestsDialogProcessor$createTests$2$1$run$methods$1.call(UtTestsDialogProcessor.kt:125)\r\n\tat org.utbot.intellij.plugin.ui.UtTestsDialogProcessor$createTests$2$1$run$methods$1.call(UtTestsDialogProcessor.kt:96)\r\n\tat com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.insideReadAction(NonBlockingReadActionImpl.java:536)\r\n\tat com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$attemptComputation$3(NonBlockingReadActionImpl.java:501)\r\n\tat com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1152)\r\n\tat com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runInReadActionWithWriteActionPriority$0(ProgressIndicatorUtils.java:75)\r\n\tat com.intellij.openapi.progress.util.ProgressIndicatorUtils.runActionAndCancelBeforeWrite(ProgressIndicatorUtils.java:158)\r\n\tat com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runWithWriteActionPriority$1(ProgressIndicatorUtils.java:115)\r\n\tat com.intellij.openapi.progress.ProgressManager.lambda$runProcess$0(ProgressManager.java:58)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:189)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$12(CoreProgressManager.java:608)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:683)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:639)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:607)\r\n\tat com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:60)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:176)\r\n\tat com.intellij.openapi.progress.ProgressManager.runProcess(ProgressManager.java:58)\r\n\tat com.intellij.openapi.progress.util.ProgressIndicatorUtils.runWithWriteActionPriority(ProgressIndicatorUtils.java:112)\r\n\tat com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:75)\r\n\tat com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.attemptComputation(NonBlockingReadActionImpl.java:501)\r\n\tat com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.executeSynchronously(NonBlockingReadActionImpl.java:428)\r\n\tat com.intellij.openapi.application.impl.NonBlockingReadActionImpl.executeSynchronously(NonBlockingReadActionImpl.java:186)\r\n\tat org.utbot.intellij.plugin.ui.UtTestsDialogProcessor$createTests$2$1.run(UtTestsDialogProcessor.kt:129)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.startTask(CoreProgressManager.java:442)\r\n\tat com.intellij.openapi.progress.impl.ProgressManagerImpl.startTask(ProgressManagerImpl.java:114)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcessWithProgressAsynchronously$5(CoreProgressManager.java:493)\r\n\tat com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$3(ProgressRunner.java:244)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:189)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$12(CoreProgressManager.java:608)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:683)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:639)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:607)\r\n\tat com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:60)\r\n\tat com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:176)\r\n\tat com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$4(ProgressRunner.java:244)\r\n\tat java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1700)\r\n\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\r\n\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\r\n\tat java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:668)\r\n\tat java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:665)\r\n\tat java.base/java.security.AccessController.doPrivileged(Native Method)\r\n\tat java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:665)\r\n\tat java.base/java.lang.Thread.run(Thread.java:829)\r\n```\r\n\r\n**Environment**\r\n\r\nIntelliJ IDEA 2022.1.3 (Ultimate Edition)\r\nBuild #IU-221.5921.22, built on June 21, 2022\r\n\r\nRuntime version: 11.0.15+10-b2043.56 amd64\r\nVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.\r\nWindows 10 10.0\r\nGC: G1 Young Generation, G1 Old Generation\r\nMemory: 2048M\r\nCores: 8\r\nNon-Bundled Plugins:\r\n    org.jetbrains.kotlin (221-1.7.0-release-281-IJ5591.52)\r\n    org.utbot.intellij.plugin.id (2022.6-beta)\r\n\r\n**Additional context**\r\n\r\nAdding the following lines to build.gradle fixes this conflict:\r\n```\r\nsourceCompatibility = 11\r\ntargetCompatibility = 11\r\n```","author":{"url":"https://github.com/alisevych","@type":"Person","name":"alisevych"},"datePublished":"2022-06-29T16:31:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/349/UTBotJava/issues/349"}