Cannot run JUnit tests since v1.54.0

[LeducNic]

Describe the bug
The JUnit cannot run on v1.54.0

To Reproduce
Steps to reproduce the behavior:

1. Unzip the project DemoJava
2. In VSCode open the folder DemoJava
3. Open sandbox/MinMaxTest.java and try to run JUnit tests

DemoJava.zip

.log

Expected behavior
JUnit tests should be able to run like in v1.53.0
A clear and concise description of what you expected to happen.

Screenshots
Error from the log file:
!ENTRY com.microsoft.java.test.plugin 4 0 2026-04-16 17:04:04.544
!MESSAGE failed to resolve the classpath.
!STACK 0
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.microsoft.java.test.plugin.launchers.JUnitLaunchConfigurationDelegate.getJUnitLaunchArguments(JUnitLaunchConfigurationDelegate.java:78)
at com.microsoft.java.test.plugin.launchers.JUnitLaunchUtils.resolveLaunchArgument(JUnitLaunchUtils.java:103)
at com.microsoft.java.test.plugin.handler.TestDelegateCommandHandler.executeCommand(TestDelegateCommandHandler.java:55)
at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler$1.run(WorkspaceExecuteCommandHandler.java:230)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler.executeCommand(WorkspaceExecuteCommandHandler.java:220)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$4(JDTLanguageServer.java:639)
at org.eclipse.jdt.ls.core.internal.BaseJDTLanguageServer.lambda$0(BaseJDTLanguageServer.java:87)
at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture$Completion.exec(Unknown Source)
at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
Caused by: org.eclipse.core.runtime.CoreException: Cannot find 'org.junit.platform.commons.annotation.Testable' on project build path. JUnit 5 tests can only be run if JUnit 5 is on the build path.
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.abort(JUnitLaunchConfigurationDelegate.java:839)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.preLaunchCheck(JUnitLaunchConfigurationDelegate.java:347)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.getVMRunnerConfiguration(JUnitLaunchConfigurationDelegate.java:140)
... 17 more
Root exception:
org.eclipse.core.runtime.CoreException: Cannot find 'org.junit.platform.commons.annotation.Testable' on project build path. JUnit 5 tests can only be run if JUnit 5 is on the build path.
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.abort(JUnitLaunchConfigurationDelegate.java:839)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.preLaunchCheck(JUnitLaunchConfigurationDelegate.java:347)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.getVMRunnerConfiguration(JUnitLaunchConfigurationDelegate.java:140)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.microsoft.java.test.plugin.launchers.JUnitLaunchConfigurationDelegate.getJUnitLaunchArguments(JUnitLaunchConfigurationDelegate.java:78)
at com.microsoft.java.test.plugin.launchers.JUnitLaunchUtils.resolveLaunchArgument(JUnitLaunchUtils.java:103)
at com.microsoft.java.test.plugin.handler.TestDelegateCommandHandler.executeCommand(TestDelegateCommandHandler.java:55)
at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler$1.run(WorkspaceExecuteCommandHandler.java:230)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler.executeCommand(WorkspaceExecuteCommandHandler.java:220)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$4(JDTLanguageServer.java:639)
at org.eclipse.jdt.ls.core.internal.BaseJDTLanguageServer.lambda$0(BaseJDTLanguageServer.java:87)
at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture$Completion.exec(Unknown Source)
at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)

If applicable, add screenshots to help explain your problem.

v 1.53.0

v 1.54.0

Environment

• macOS and Linux
• JDK 25
• Version : 1.116.0 (Universal)
  Validation : 560a9dba96f961efea7b1612916f89e5d5d4d679
  Date : 2026-04-15T00:28:13Z
  Electron : 39.8.7
  ElectronBuildId : 13797146
  Chromium : 142.0.7444.265
  Node.js : 22.22.1
  V8 : 14.2.231.22-electron.0
  Système d’exploitation : Darwin x64 22.6.0
• Java extension version: 1.54.0

Additional Information

[snjeza]

@LeducNic Could you try to replace junit-platform-console-standalone-1.13.4.jar with junit-platform-console-standalone-6.0.3.jar?