JUnit 5 Release Notes

Fix support for test methods with the same signature as a package-private methods declared in super classes in different packages.

Improve error message when using @ParameterizedClass with field injection and not providing enough arguments.

The Launcher (specifically LauncherDiscoveryResult) now retains the original TestEngine registration order after pruning test engines without tests, thereby ensuring reliable test execution order of multiple test engines.

Deprecate OutputDirectoryProvider interface in favor of the new OutputDirectoryCreator interface to resolve a cyclic package dependency along with the following APIs (which all have replacements working with OutputDirectoryCreator):

Deprecate org.junit.platform.commons.support.Resource interface in favor of the new org.junit.platform.commons.io.Resource interface.

Deprecate Resource-related methods in ReflectionSupport in favor of corresponding methods in the new ResourceSupport class:

Deprecate DiscoverySelectors.selectClasspathResource(Set) method in favor of selectClasspathResourceByName(Set).

Deprecate ClasspathResourceSelector.getClasspathResources() method in favor of getResources().

Deprecate the EngineDiscoveryRequestResolver.Builder.addResourceContainerSelectorResolver(Predicate) method in favor of addResourceContainerSelectorResolver(ResourceFilter).

Deprecate Resource-related methods in ClasspathScanner in favor of new methods using org.junit.platform.commons.io.Resource and ResourceFilter:

Emit discovery warning when @SuiteDisplayName is used with a blank string.

To help diagnosing potentially invalid invocations, the Console Launcher now logs warnings for nonexistent classpath roots added via --classpath or --scan-classpath rather than silently ignoring them.

New classpath resource abstraction in org.junit.platform.commons.io.Resource with support for loading resources or finding them on the classpath via static utility methods in the new org.junit.platform.commons.support.ResourceSupport class.

New Resource.of(String, URI) static factory method for creating an org.junit.platform.commons.support.Resource.

New FileSource.withPosition(FilePosition) method to avoid the overhead of redundant canonicalization of files when using FileSource.from(File, FilePosition) with many different FilePosition instances for the same File.

New classpath resource abstraction in org.junit.platform.commons.io.Resource with support for loading resources or finding them on the classpath via static utility methods in the new org.junit.platform.commons.support.ResourceSupport class.

MediaType.APPLICATION_JSON_UTF_8 is now deprecated in favor of using MediaType.APPLICATION_JSON, since the industry considers UTF-8 to be the implicit default encoding for the application/json media type.

org.junit.jupiter.api.extension.MediaType is now deprecated in favor of the new org.junit.jupiter.api.MediaType.

The publishFile(…​) methods in TestReporter which accept an org.junit.jupiter.api.extension.MediaType are now deprecated in favor of new variants which accept an org.junit.jupiter.api.MediaType.

The publishFile(…​) method in ExtensionContext which accepts an org.junit.jupiter.api.extension.MediaType is now deprecated in favor of a new variant which accepts an org.junit.jupiter.api.MediaType.

org.junit.jupiter.params.support.ParameterInfo is now deprecated in favor of the new org.junit.jupiter.params.ParameterInfo.

MediaType now trims leading and trailing whitespace from a supplied value, type, or subtype.

MediaType now eagerly rejects a blank value, type, or subtype.

Remove java.* packages from Import-Package headers in all jar manifests to maximize compatibility with older OSGi runtimes.

ClasspathResourceSelector no longer allows to be constructed with a resource name that is blank after removing the leading slash.

PackageSource.from(String) now allows to be constructed with an empty string to indicate the default package.

Log only once per implementation type for CloseableResource implementations that do not implement AutoCloseable to avoid flooding console output with this warning.

All experimental APIs have been promoted to maintained to indicate that they won’t be removed in any future 5.x release.

Fix regression that caused top-level and static member classes annotated with @Nested to no longer be executed because they caused a discovery issue to be reported.

Stop reporting discovery issues for composed annotation classes that are meta-annotated with @Nested.

Stop reporting discovery issues for DefaultImpls classes generated by the Kotlin compiler for interfaces with non-abstract test methods.

When a customReason is supplied along with a null value for the default reason to ConditionEvaluationResult.disabled(String, String), the resulting reason is now "my custom reason" instead of "null ==> my custom reason".

A blank reason supplied to a ConditionEvaluationResult factory method is now treated the same as a null reason, resulting in an empty Optional returned from ConditionEvaluationResult.getReason().

The Javadoc for factory methods in ConditionEvaluationResult now explicitly states that both null and blank values are supported for reason strings and that such values will result in an empty Optional returned from ConditionEvaluationResult.getReason().

Improve message of discovery issues reported for ineffective @Order annotations.

If Git information is included in the Open Test Reporting XML format (see below), any credentials that may be configured as part the remote.origin.url setting in Git were previously written to the originUrl attribute of <git:repository> elements. For example, when cloning a GitHub repository using a URL like https://username:[email protected]/organization/repository.git, both username and password were included in the XML report. Since a report which includes this information may be shared, published, or archived (for example, on a CI server), this was reported as a potential security vulnerability (CVE-2025-53103). Any credentials are now replaced with *** before writing them to the XML report.

Including information about the Git repository (such as the commit hash and branch name) in the Open Test Reporting XML format is now an opt-in feature that can be enabled via a configuration parameter. Please refer to the User Guide for details.

Stop reporting discovery issues for cyclic inner class hierarchies not annotated with @Nested.

Stop reporting discovery issues for abstract inner classes that contain test methods but are not annotated with @Nested.

Stop reporting discovery issues for abstract test methods. Although they will not be executed, it is a valid pattern to annotate them with @Test for documentation purposes and override them in subclasses while re-declaring the @Test annotation.

JAVA_26 has been added to the JRE enum for use with JRE-based execution conditions.

The 5.13.0 release introduced a regression regarding the execution order in test classes containing both test methods and @Nested test classes. When classpath scanning was used during test discovery — for example, when resolving a package selector for a @Suite class — test methods in @Nested classes were executed before test methods in their enclosing class. This undesired change in behavior has now been reverted so that tests in @Nested test classes are always executed after tests in enclosing test classes again.

Fix support for AnnotationBasedArgumentsProvider implementations that override the deprecated provideArguments(ExtensionContext, Annotation) method.