Add junit-6-migration module: JUnit 5.14.4 vs 6.1.3, API diff and behaviour probes

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01YPgGH6aMbSLANL3E2HHmS6
2026-10-25 18:46:52 +00:00
parent 8fc8bc934f
commit 820318be7d
22 changed files with 1018 additions and 0 deletions
@@ -5,9 +5,11 @@ Runnable companion code for the testing posts on [ankurm.com](https://ankurm.com
 | Module | Post | Stack |
 |---|---|---|
 | [`mockito/`](mockito) | Mockito 5 Deep Dive: Static, Final and Constructor Mocking, ArgumentCaptor and Strict Stubs | Mockito 5.24.0, JUnit 6.1.3, JDK 25 |
+| [`junit-6-migration/`](junit-6-migration) | JUnit 5 to 6 Migration: What Was Removed, What Changed and How to Upgrade | JUnit 5.14.4 and 6.1.3, JDK 25 |

 Every module keeps the real output of its tests in `output/`. Each test writes the transcript and asserts the same facts, so the numbers in the posts fail the build if they stop being true.

 ```bash
 cd mockito && ./scripts/run-all.sh
+cd ../junit-6-migration && ./scripts/run-all.sh
 ```
@@ -0,0 +1,32 @@
+# junit-6-migration
+
+Companion module for the ankurm.com article on **migrating from JUnit 5 to JUnit 6**. The same tests run on JUnit 5.14.4 and 6.1.3, and the two
+releases are compared jar against jar. Nothing here is copied from release notes: each file in `output/` was produced by running something.
+
+## Versions
+
+| Component | Version | Notes |
+|---|---|---|
+| JUnit (before) | `5.14.4` Jupiter / `1.14.4` Platform | last 5.x release on Maven Central at the time of writing |
+| JUnit (after) | `6.1.3` | Jupiter, Platform and Vintage all share this one number |
+| JUnit 4 | `4.13.2` | only for the Vintage check |
+| Java | build on `25`, `--release 17` | JUnit 6 jars need Java 17 |
+
+## Run
+
+```bash
+./scripts/run-all.sh
+```
+
+## Output
+
+| File | What it shows |
+|---|---|
+| `01-versions-and-baseline.txt` | version numbers and the Java level of each jar's class files |
+| `02-removed-api.txt` | public classes and members in 5.14.4 that are not in 6.1.3, and whether 5.14.4 had deprecated them |
+| `03-csv-behaviour-<version>.txt` | one set of `@CsvSource` and `@CsvFileSource` cases run on each version |
+| `04-vintage-junit4-<version>.txt` | a JUnit 4 test run through the Vintage engine on each version |
+| `05-old-apis-<version>.txt` | what the compiler says about three deprecated 5.x APIs on each version |
+| `06-fixed-apis-<version>.txt` | the replacements compile on both versions |
+
+`pom.xml` has two profiles, `junit5` and `junit6`, that change nothing but `junit.version`.
@@ -0,0 +1,11 @@
+artifact                           5.x jar                      6.x jar                     
+junit-jupiter-api                  5.14.4 (Java 8)          6.1.3 (Java 17)
+junit-jupiter-engine               5.14.4 (Java 8)          6.1.3 (Java 17)
+junit-jupiter-params               5.14.4 (Java 8)          6.1.3 (Java 17)
+junit-platform-commons             1.14.4 (Java 8)          6.1.3 (Java 17)
+junit-platform-engine              1.14.4 (Java 8)          6.1.3 (Java 17)
+junit-platform-launcher            1.14.4 (Java 8)          6.1.3 (Java 17)
+junit-platform-suite-api           1.14.4 (Java 8)          6.1.3 (Java 17)
+junit-platform-suite-engine        1.14.4 (Java 8)          6.1.3 (Java 17)
+junit-platform-testkit             1.14.4 (Java 8)          6.1.3 (Java 17)
+junit-vintage-engine               5.14.4 (Java 8)          6.1.3 (Java 17)
@@ -0,0 +1,318 @@
+== junit-jupiter-api: public classes removed: 6, members removed from classes that remain: 8, new classes: 64
+  class  org.junit.jupiter.api.Assertions$TimeoutFailureFactory  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.api.AssertionsKt$assertDoesNotThrow$3  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.api.AssertionsKt$assertThrows$4  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.api.AssertionsKt$evaluateAndWrap$1  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.api.AssertionsKt$evaluateAndWrap$2  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.api.MethodOrderer$Alphanumeric  [deprecated in 5.x]
+  member org.junit.jupiter.api.Assertions: public static <T extends java.lang.Object, E extends java.lang.Throwable> T assertTimeoutPreemptively(java.time.Duration, org.junit.jupiter.api.function.ThrowingSupplier<T>, java.util.function.Supplier<java.lang.String>, org.junit.jupiter.api.Assertions$TimeoutFailureFactory<E>) throws E  [NOT deprecated in 5.x]
+  member org.junit.jupiter.api.AssertionsKt: public static final <R extends java.lang.Object> org.junit.jupiter.api.function.ThrowingSupplier<R> evaluateAndWrap(kotlin.jvm.functions.Function0<? extends R>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.api.extension.ExtensionContext: public abstract <T extends java.lang.Object> java.util.Optional<T> getConfigurationParameter(java.lang.String, java.util.function.Function<java.lang.String, T>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.api.extension.ExtensionContext$Store: public abstract <K extends java.lang.Object, V extends java.lang.Object> java.lang.Object getOrComputeIfAbsent(K, java.util.function.Function<K, V>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.api.extension.ExtensionContext$Store: public abstract <K extends java.lang.Object, V extends java.lang.Object> V getOrComputeIfAbsent(K, java.util.function.Function<K, V>, java.lang.Class<V>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.api.extension.InvocationInterceptor: public default void interceptDynamicTest(org.junit.jupiter.api.extension.InvocationInterceptor$Invocation<java.lang.Void>, org.junit.jupiter.api.extension.ExtensionContext) throws java.lang.Throwable  [deprecated in 5.x]
+  member org.junit.jupiter.api.extension.TestTemplateInvocationContextProvider: public abstract java.util.stream.Stream<org.junit.jupiter.api.extension.TestTemplateInvocationContext> provideTestTemplateInvocationContexts(org.junit.jupiter.api.extension.ExtensionContext)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.api.io.TempDir: public static final java.lang.String SCOPE_PROPERTY_NAME  [deprecated in 5.x]
+== junit-jupiter-engine: public classes removed: 0, members removed from classes that remain: 30, new classes: 17
+  member org.junit.jupiter.engine.Constants: public static final java.lang.String TEMP_DIR_SCOPE_PROPERTY_NAME  [deprecated in 5.x]
+  member org.junit.jupiter.engine.config.CachingJupiterConfiguration: public <T extends java.lang.Object> java.util.Optional<T> getRawConfigurationParameter(java.lang.String, java.util.function.Function<java.lang.String, T>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.DefaultJupiterConfiguration: public org.junit.jupiter.engine.config.DefaultJupiterConfiguration(org.junit.platform.engine.ConfigurationParameters, org.junit.platform.engine.OutputDirectoryCreator)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.DefaultJupiterConfiguration: public <T extends java.lang.Object> java.util.Optional<T> getRawConfigurationParameter(java.lang.String, java.util.function.Function<java.lang.String, T>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.EnumConfigurationParameterConverter: public E get(java.lang.String, java.util.function.Function<java.lang.String, java.util.Optional<java.lang.String>>, E)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String EXTENSIONS_AUTODETECTION_INCLUDE_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String EXTENSIONS_AUTODETECTION_EXCLUDE_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEACTIVATE_CONDITIONS_PATTERN_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String PARALLEL_EXECUTION_ENABLED_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String CLOSING_STORED_AUTO_CLOSEABLE_ENABLED_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEFAULT_EXECUTION_MODE_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEFAULT_CLASSES_EXECUTION_MODE_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String EXTENSIONS_AUTODETECTION_ENABLED_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String EXTENSIONS_TIMEOUT_THREAD_DUMP_ENABLED_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEFAULT_TEST_INSTANCE_LIFECYCLE_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEFAULT_DISPLAY_NAME_GENERATOR_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEFAULT_TEST_METHOD_ORDER_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEFAULT_TEST_CLASS_ORDER_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public static final java.lang.String DEFAULT_TEST_INSTANTIATION_EXTENSION_CONTEXT_SCOPE_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.config.JupiterConfiguration: public abstract <T extends java.lang.Object> java.util.Optional<T> getRawConfigurationParameter(java.lang.String, java.util.function.Function<java.lang.String, T>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.descriptor.ClassTestDescriptor: public org.junit.platform.engine.support.hierarchical.Node$ExecutionMode getExecutionMode()  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.descriptor.JupiterTestDescriptor: public org.junit.platform.engine.support.hierarchical.Node$ExecutionMode getExecutionMode()  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.discovery.AbstractOrderingVisitor$DescriptorWrapperOrderer: protected static <ORDERER extends java.lang.Object, WRAPPER extends java.lang.Object> org.junit.jupiter.engine.discovery.AbstractOrderingVisitor$DescriptorWrapperOrderer<ORDERER, WRAPPER> noop()  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.discovery.AbstractOrderingVisitor$MessageGenerator: public abstract java.lang.String generateMessage(int)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.discovery.DiscoverySelectorResolver: public org.junit.jupiter.engine.discovery.DiscoverySelectorResolver()  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.discovery.DiscoverySelectorResolver: public void resolveSelectors(org.junit.platform.engine.EngineDiscoveryRequest, org.junit.jupiter.engine.descriptor.JupiterEngineDescriptor)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.execution.NamespaceAwareStore: public <K extends java.lang.Object, V extends java.lang.Object> java.lang.Object getOrComputeIfAbsent(K, java.util.function.Function<K, V>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.execution.NamespaceAwareStore: public <K extends java.lang.Object, V extends java.lang.Object> V getOrComputeIfAbsent(K, java.util.function.Function<K, V>, java.lang.Class<V>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.execution.ParameterResolutionUtils: public org.junit.jupiter.engine.execution.ParameterResolutionUtils()  [NOT deprecated in 5.x]
+  member org.junit.jupiter.engine.support.JupiterThrowableCollectorFactory: public org.junit.jupiter.engine.support.JupiterThrowableCollectorFactory()  [NOT deprecated in 5.x]
+== junit-jupiter-params: public classes removed: 198, members removed from classes that remain: 5, new classes: 81
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.BooleanString  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Convert  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Copy  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.EnumOptions  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.FixedWidth  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Format  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.HeaderTransformer  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Headers  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.LowerCase  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Nested  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.NullString  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Parsed  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Replace  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Trim  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.UpperCase  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.Validate  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.helpers.AnnotationHelper  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.helpers.AnnotationRegistry  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.helpers.FieldMapping  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.helpers.MethodDescriptor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.helpers.MethodFilter  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.annotations.helpers.TransformedHeader  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.AbstractParser  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.AbstractWriter  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ArgumentUtils  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ColumnMap  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.CommonParserSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.CommonSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.CommonWriterSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.Context  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ContextSnapshot  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ContextWrapper  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ConversionProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.DataProcessingException  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.DataValidationException  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.DefaultContext  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.DefaultConversionProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.DefaultParsingContext  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.Format  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.IterableResult  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.NoopProcessorErrorHandler  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.NormalizedString  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ParserOutput  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ParsingContext  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ParsingContextSnapshot  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ParsingContextWrapper  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ProcessorErrorHandler  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.ResultIterator  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.RetryableErrorHandler  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.RowProcessorErrorHandler  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.StringCache  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.TextParsingException  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.TextWritingException  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.beans.BeanHelper  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.beans.PropertyWrapper  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.AllIndexesSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.ColumnMapper  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.ColumnMapping  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.ExcludeFieldEnumSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.ExcludeFieldIndexSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.ExcludeFieldNameSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.FieldConversionMapping  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.FieldEnumSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.FieldIndexSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.FieldNameSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.FieldSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.fields.FieldSet  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.AbstractCharInputReader  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.BomInput  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.BomInput$BytesProcessedNotification  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.CharAppender  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.CharInput  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.CharInputReader  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.DefaultCharAppender  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.DefaultCharInputReader  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.EOFException  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.ElasticCharAppender  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.ExpandingCharAppender  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.InputAnalysisProcess  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.LineSeparatorDetector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.LookaheadCharInputReader  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.NoopCharAppender  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.WriterCharAppender  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.input.concurrent.ConcurrentCharInputReader  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.iterators.RecordIterator  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.iterators.RowIterator  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.AbstractRowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.BatchedColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.BatchedObjectColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.BeanListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.BeanProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.BeanWriterProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.ColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.CompositeRowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.ConcurrentRowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.CustomMatcher  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.InputValueSwitch  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.MasterDetailListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.MasterDetailProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.MasterDetailRecord  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.MultiBeanListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.MultiBeanProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.MultiBeanRowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.NoopRowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.ObjectColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.ObjectRowListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.ObjectRowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.ObjectRowWriterProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.OutputValueSwitch  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.RowListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.RowPlacement  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.RowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.RowProcessorSwitch  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.RowWriterProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.RowWriterProcessorSwitch  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractBatchedColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractBatchedObjectColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractBeanListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractBeanProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractConcurrentProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractInputValueSwitch  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractMasterDetailListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractMasterDetailProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractMultiBeanListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractMultiBeanProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractMultiBeanRowProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractObjectColumnProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractObjectListProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractObjectProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.AbstractProcessorSwitch  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.BeanConversionProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.ColumnOrderDependent  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.CompositeProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.NoopProcessor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.processor.core.Processor  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.record.AbstractRecordFactory  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.record.Record  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.record.RecordFactory  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.record.RecordMetaData  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.routine.AbstractRoutines  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.common.routine.InputDimension  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.BigDecimalConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.BigIntegerConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.BooleanConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.ByteConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.CalendarConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.CharacterConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.Conversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.Conversions  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.DateConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.DoubleConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.EnumConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.EnumSelector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.FloatConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.FormattedBigDecimalConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.FormattedConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.FormattedDateConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.IntegerConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.LongConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.LowerCaseConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.NullConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.NullStringConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.NumericConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.ObjectConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.RegexConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.ShortConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.ToStringConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.TrimConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.UpperCaseConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.ValidatedConversion  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.conversions.Validator  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.Csv  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.CsvFormat  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.CsvFormatDetector  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.CsvParser  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.CsvParserSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.CsvRoutines  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.CsvWriter  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.CsvWriterSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.csv.UnescapedQuoteHandling  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FieldAlignment  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthFieldLengths  [deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthFields  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthFormat  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthParser  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthParserSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthRoutines  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthWriter  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.fixed.FixedWidthWriterSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.tsv.TsvFormat  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.tsv.TsvParser  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.tsv.TsvParserSettings  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.tsv.TsvRoutines  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.tsv.TsvWriter  [NOT deprecated in 5.x]
+  class  org.junit.jupiter.params.shadow.com.univocity.parsers.tsv.TsvWriterSettings  [NOT deprecated in 5.x]
+  member org.junit.jupiter.params.ResolutionCache$Concurrent: public java.lang.Object resolve(org.junit.jupiter.params.support.ParameterDeclaration, java.util.function.Supplier<java.lang.Object>)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.params.aggregator.DefaultArgumentsAccessor: public static org.junit.jupiter.params.aggregator.DefaultArgumentsAccessor create(org.junit.jupiter.api.extension.ExtensionContext, int, java.lang.ClassLoader, java.lang.Object[])  [NOT deprecated in 5.x]
+  member org.junit.jupiter.params.converter.DefaultArgumentConverter: public static final java.lang.String DEFAULT_LOCALE_CONVERSION_FORMAT_PROPERTY_NAME  [NOT deprecated in 5.x]
+  member org.junit.jupiter.params.converter.DefaultArgumentConverter: public org.junit.jupiter.params.converter.DefaultArgumentConverter(org.junit.jupiter.api.extension.ExtensionContext)  [NOT deprecated in 5.x]
+  member org.junit.jupiter.params.provider.CsvFileSource: public abstract java.lang.String lineSeparator()  [NOT deprecated in 5.x]
+== junit-platform-commons: public classes removed: 2, members removed from classes that remain: 13, new classes: 16
+  class  org.junit.platform.commons.util.BlacklistedExceptions  [deprecated in 5.x]
+  class  org.junit.platform.commons.util.PreconditionViolationException  [deprecated in 5.x]
+  member org.junit.platform.commons.support.ReflectionSupport: public static java.util.Optional<java.lang.Class<?>> loadClass(java.lang.String)  [deprecated in 5.x]
+  member org.junit.platform.commons.util.CollectionUtils: public static <T extends java.lang.Object> java.util.Set<T> toSet(T[])  [NOT deprecated in 5.x]
+  member org.junit.platform.commons.util.CollectionUtils: public static <T extends java.lang.Object> java.util.stream.Collector<T, ?, java.util.List<T>> toUnmodifiableList()  [NOT deprecated in 5.x]
+  member org.junit.platform.commons.util.KotlinReflectionUtils: public org.junit.platform.commons.util.KotlinReflectionUtils()  [NOT deprecated in 5.x]
+  member org.junit.platform.commons.util.ModuleUtils: public org.junit.platform.commons.util.ModuleUtils()  [NOT deprecated in 5.x]
+  member org.junit.platform.commons.util.ModuleUtils: public static boolean isJavaPlatformModuleSystemAvailable()  [NOT deprecated in 5.x]
+  member org.junit.platform.commons.util.ReflectionUtils: public static <T extends java.lang.Object> java.util.Optional<java.lang.Object> readFieldValue(java.lang.Class<T>, java.lang.String, T)  [deprecated in 5.x]
+  member org.junit.platform.commons.util.ReflectionUtils: public static java.util.Optional<java.lang.Object> readFieldValue(java.lang.reflect.Field)  [deprecated in 5.x]
+  member org.junit.platform.commons.util.ReflectionUtils: public static java.util.Optional<java.lang.Object> readFieldValue(java.lang.reflect.Field, java.lang.Object)  [deprecated in 5.x]
+  member org.junit.platform.commons.util.ReflectionUtils: public static java.util.List<java.lang.Object> readFieldValues(java.util.List<java.lang.reflect.Field>, java.lang.Object)  [NOT deprecated in 5.x]
+  member org.junit.platform.commons.util.ReflectionUtils: public static java.util.List<java.lang.Object> readFieldValues(java.util.List<java.lang.reflect.Field>, java.lang.Object, java.util.function.Predicate<java.lang.reflect.Field>)  [NOT deprecated in 5.x]
+  member org.junit.platform.commons.util.ReflectionUtils: public static java.util.Optional<java.lang.Class<?>> loadClass(java.lang.String)  [deprecated in 5.x]
+  member org.junit.platform.commons.util.ReflectionUtils: public static java.util.Optional<java.lang.Class<?>> loadClass(java.lang.String, java.lang.ClassLoader)  [deprecated in 5.x]
+== junit-platform-engine: public classes removed: 3, members removed from classes that remain: 29, new classes: 36
+  class  org.junit.platform.engine.support.filter.ClasspathScanningSupport  [deprecated in 5.x]
+  class  org.junit.platform.engine.support.hierarchical.SingleTestExecutor  [deprecated in 5.x]
+  class  org.junit.platform.engine.support.hierarchical.SingleTestExecutor$Executable  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.ConfigurationParameters: public default <T extends java.lang.Object> java.util.Optional<T> get(java.lang.String, java.util.function.Function<java.lang.String, T>)  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.ConfigurationParameters: public abstract int size()  [deprecated in 5.x]
+  member org.junit.platform.engine.ExecutionRequest: public static org.junit.platform.engine.ExecutionRequest create(org.junit.platform.engine.TestDescriptor, org.junit.platform.engine.EngineExecutionListener, org.junit.platform.engine.ConfigurationParameters, org.junit.platform.engine.OutputDirectoryCreator, org.junit.platform.engine.support.store.NamespacedHierarchicalStore<org.junit.platform.engine.support.store.Namespace>)  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.UniqueId: public final java.util.Optional<java.lang.String> getEngineId()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.UniqueId: public final java.util.List<org.junit.platform.engine.UniqueId$Segment> getSegments()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.UniqueId: public final org.junit.platform.engine.UniqueId append(java.lang.String, java.lang.String)  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.UniqueId: public final org.junit.platform.engine.UniqueId append(org.junit.platform.engine.UniqueId$Segment)  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.discovery.MethodSelector: public java.lang.String getMethodParameterTypes()  [deprecated in 5.x]
+  member org.junit.platform.engine.discovery.NestedMethodSelector: public java.lang.String getMethodParameterTypes()  [deprecated in 5.x]
+  member org.junit.platform.engine.reporting.ReportEntry: public org.junit.platform.engine.reporting.ReportEntry()  [deprecated in 5.x]
+  member org.junit.platform.engine.support.config.PrefixedConfigurationParameters: public <T extends java.lang.Object> java.util.Optional<T> get(java.lang.String, java.util.function.Function<java.lang.String, T>)  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.config.PrefixedConfigurationParameters: public int size()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.ClassSource: public final java.lang.String getClassName()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.ClassSource: public final java.lang.Class<?> getJavaClass()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.ClassSource: public final java.util.Optional<org.junit.platform.engine.support.descriptor.FilePosition> getPosition()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.ClasspathResourceSource: public final java.util.Optional<org.junit.platform.engine.support.descriptor.FilePosition> getPosition()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.CompositeTestSource: public final java.util.List<org.junit.platform.engine.TestSource> getSources()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.DirectorySource: public final java.net.URI getUri()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.DirectorySource: public final java.io.File getFile()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.FileSource: public final java.net.URI getUri()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.FileSource: public final java.io.File getFile()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.FileSource: public final java.util.Optional<org.junit.platform.engine.support.descriptor.FilePosition> getPosition()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.MethodSource: public final java.lang.String getMethodName()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.MethodSource: public final java.lang.String getMethodParameterTypes()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.MethodSource: public final java.lang.Class<?> getJavaClass()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.MethodSource: public final java.lang.reflect.Method getJavaMethod()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.descriptor.PackageSource: public final java.lang.String getPackageName()  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.store.NamespacedHierarchicalStore: public <K extends java.lang.Object, V extends java.lang.Object> java.lang.Object getOrComputeIfAbsent(N, K, java.util.function.Function<K, V>)  [NOT deprecated in 5.x]
+  member org.junit.platform.engine.support.store.NamespacedHierarchicalStore: public <K extends java.lang.Object, V extends java.lang.Object> V getOrComputeIfAbsent(N, K, java.util.function.Function<K, V>, java.lang.Class<V>) throws org.junit.platform.engine.support.store.NamespacedHierarchicalStoreException  [NOT deprecated in 5.x]
+== junit-platform-launcher: public classes removed: 1, members removed from classes that remain: 5, new classes: 28
+  class  org.junit.platform.launcher.listeners.LegacyReportingUtils  [deprecated in 5.x]
+  member org.junit.platform.launcher.TestPlan: public void add(org.junit.platform.launcher.TestIdentifier)  [deprecated in 5.x]
+  member org.junit.platform.launcher.TestPlan: public java.util.Set<org.junit.platform.launcher.TestIdentifier> getChildren(java.lang.String)  [deprecated in 5.x]
+  member org.junit.platform.launcher.core.EngineExecutionOrchestrator: public void execute(org.junit.platform.launcher.core.LauncherDiscoveryResult, org.junit.platform.engine.EngineExecutionListener, org.junit.platform.launcher.TestExecutionListener, org.junit.platform.engine.support.store.NamespacedHierarchicalStore<org.junit.platform.engine.support.store.Namespace>)  [NOT deprecated in 5.x]
+  member org.junit.platform.launcher.core.EngineExecutionOrchestrator: public void execute(org.junit.platform.launcher.core.LauncherDiscoveryResult, org.junit.platform.engine.EngineExecutionListener, org.junit.platform.engine.support.store.NamespacedHierarchicalStore<org.junit.platform.engine.support.store.Namespace>)  [NOT deprecated in 5.x]
+  member org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder: public org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder()  [deprecated in 5.x]
+== junit-platform-suite-api: public classes removed: 1, members removed from classes that remain: 0, new classes: 1
+  class  org.junit.platform.suite.api.UseTechnicalNames  [deprecated in 5.x]
+== junit-platform-suite-engine: public classes removed: 0, members removed from classes that remain: 0, new classes: 4
+== junit-platform-testkit: public classes removed: 0, members removed from classes that remain: 3, new classes: 2
+  member org.junit.platform.testkit.engine.EngineTestKit: public static org.junit.platform.testkit.engine.EngineExecutionResults execute(java.lang.String, org.junit.platform.engine.EngineDiscoveryRequest)  [deprecated in 5.x]
+  member org.junit.platform.testkit.engine.EngineTestKit: public static org.junit.platform.testkit.engine.EngineExecutionResults execute(org.junit.platform.engine.TestEngine, org.junit.platform.engine.EngineDiscoveryRequest)  [deprecated in 5.x]
+  member org.junit.platform.testkit.engine.EngineTestKit$Builder: public org.junit.platform.testkit.engine.EngineTestKit$Builder filters(org.junit.platform.engine.DiscoveryFilter<?>...)  [deprecated in 5.x]
+== junit-vintage-engine: public classes removed: 0, members removed from classes that remain: 4, new classes: 6
+  member org.junit.vintage.engine.descriptor.VintageEngineDescriptor: public java.util.Set<org.junit.platform.engine.TestDescriptor> getModifiableChildren()  [NOT deprecated in 5.x]
+  member org.junit.vintage.engine.execution.RunnerExecutor: public org.junit.vintage.engine.execution.RunnerExecutor(org.junit.platform.engine.EngineExecutionListener)  [NOT deprecated in 5.x]
+  member org.junit.vintage.engine.execution.VintageExecutor: public org.junit.vintage.engine.execution.VintageExecutor(org.junit.vintage.engine.descriptor.VintageEngineDescriptor, org.junit.platform.engine.EngineExecutionListener, org.junit.platform.engine.ExecutionRequest)  [NOT deprecated in 5.x]
+  member org.junit.vintage.engine.execution.VintageExecutor: public void executeAllChildren()  [NOT deprecated in 5.x]
@@ -0,0 +1,19 @@
+JUnit 5.14.4
+FAILED      [method] columnLongerThanLimit(String, int) -> CsvParsingException: Failed to parse CSV input configured via @org.junit.jupiter.params.provider.CsvSource(emptyValue="", delimiter...
+SUCCESSFUL  [1] x, 1
+SUCCESSFUL  [2] y, 2
+SUCCESSFUL  [1] apple, 1
+SUCCESSFUL  [2] a,b, 2
+SUCCESSFUL  [3] padded, 3
+SUCCESSFUL  [4] , 4
+SUCCESSFUL  [5] null, 5
+SUCCESSFUL  [6] NIL, 6
+SUCCESSFUL  [7] it's, 7
+SUCCESSFUL  [8] "dq", 8
+SUCCESSFUL  [1] name = widget, qty = 4
+SUCCESSFUL  [2] name = multi word, qty = 5
+SUCCESSFUL  [1] one, 1
+SUCCESSFUL  [2] two, with comma, 2
+SUCCESSFUL  [3] line
+break, 3
+SUCCESSFUL  [1] a
@@ -0,0 +1,18 @@
+JUnit 6.1.3
+FAILED      [method] columnLongerThanLimit(String, int) -> CsvParsingException: Failed to parse CSV input configured via @org.junit.jupiter.params.provider.CsvSource(emptyValue="", delimiter...
+SUCCESSFUL  [1] "x", "1"
+SUCCESSFUL  [2] "y", "2"
+SUCCESSFUL  [1] "apple", "1"
+SUCCESSFUL  [2] "a,b", "2"
+SUCCESSFUL  [3] "padded", "3"
+SUCCESSFUL  [4] "", "4"
+SUCCESSFUL  [5] null, "5"
+SUCCESSFUL  [6] "NIL", "6"
+SUCCESSFUL  [7] "it's", "7"
+SUCCESSFUL  [8] "\"dq\"", "8"
+SUCCESSFUL  [1] name = "widget", qty = "4"
+SUCCESSFUL  [2] name = "multi word", qty = "5"
+SUCCESSFUL  [1] "one", "1"
+SUCCESSFUL  [2] "two, with comma", "2"
+SUCCESSFUL  [3] "line\nbreak", "3"
+SUCCESSFUL  [1] "a"
@@ -0,0 +1,2 @@
+JUnit 5.14.4
+SUCCESSFUL  stillRuns
@@ -0,0 +1,2 @@
+JUnit 6.1.3
+SUCCESSFUL  stillRuns
@@ -0,0 +1,40 @@
+JUnit 5.14.4, compiling OldApis.java
+src/compat/OldApis.java:1: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.MethodOrderer;
+                            ^
+src/compat/OldApis.java:2: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.Test;
+                            ^
+src/compat/OldApis.java:3: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.TestMethodOrder;
+                            ^
+src/compat/OldApis.java:4: error: package org.junit.jupiter.api.io does not exist
+import org.junit.jupiter.api.io.TempDir;
+                               ^
+src/compat/OldApis.java:5: error: package org.junit.platform.commons.support does not exist
+import org.junit.platform.commons.support.ReflectionSupport;
+                                         ^
+src/compat/OldApis.java:8: error: cannot find symbol
+@TestMethodOrder(MethodOrderer.Alphanumeric.class)
+ ^
+  symbol: class TestMethodOrder
+src/compat/OldApis.java:8: error: package MethodOrderer does not exist
+@TestMethodOrder(MethodOrderer.Alphanumeric.class)
+                              ^
+src/compat/OldApis.java:11: error: cannot find symbol
+    @Test
+     ^
+  symbol:   class Test
+  location: class OldApis
+src/compat/OldApis.java:13: error: cannot find symbol
+        Object loaded = ReflectionSupport.loadClass("java.lang.String");
+                        ^
+  symbol:   variable ReflectionSupport
+  location: class OldApis
+src/compat/OldApis.java:14: error: cannot find symbol
+        String property = TempDir.SCOPE_PROPERTY_NAME;
+                          ^
+  symbol:   variable TempDir
+  location: class OldApis
+10 errors
+javac exit status: 1
@@ -0,0 +1,40 @@
+JUnit 6.1.3, compiling OldApis.java
+src/compat/OldApis.java:1: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.MethodOrderer;
+                            ^
+src/compat/OldApis.java:2: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.Test;
+                            ^
+src/compat/OldApis.java:3: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.TestMethodOrder;
+                            ^
+src/compat/OldApis.java:4: error: package org.junit.jupiter.api.io does not exist
+import org.junit.jupiter.api.io.TempDir;
+                               ^
+src/compat/OldApis.java:5: error: package org.junit.platform.commons.support does not exist
+import org.junit.platform.commons.support.ReflectionSupport;
+                                         ^
+src/compat/OldApis.java:8: error: cannot find symbol
+@TestMethodOrder(MethodOrderer.Alphanumeric.class)
+ ^
+  symbol: class TestMethodOrder
+src/compat/OldApis.java:8: error: package MethodOrderer does not exist
+@TestMethodOrder(MethodOrderer.Alphanumeric.class)
+                              ^
+src/compat/OldApis.java:11: error: cannot find symbol
+    @Test
+     ^
+  symbol:   class Test
+  location: class OldApis
+src/compat/OldApis.java:13: error: cannot find symbol
+        Object loaded = ReflectionSupport.loadClass("java.lang.String");
+                        ^
+  symbol:   variable ReflectionSupport
+  location: class OldApis
+src/compat/OldApis.java:14: error: cannot find symbol
+        String property = TempDir.SCOPE_PROPERTY_NAME;
+                          ^
+  symbol:   variable TempDir
+  location: class OldApis
+10 errors
+javac exit status: 1
@@ -0,0 +1,32 @@
+JUnit 5.14.4, compiling FixedApis.java
+src/compat/FixedApis.java:1: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.MethodOrderer;
+                            ^
+src/compat/FixedApis.java:2: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.Test;
+                            ^
+src/compat/FixedApis.java:3: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.TestMethodOrder;
+                            ^
+src/compat/FixedApis.java:4: error: package org.junit.platform.commons.support does not exist
+import org.junit.platform.commons.support.ReflectionSupport;
+                                         ^
+src/compat/FixedApis.java:7: error: cannot find symbol
+@TestMethodOrder(MethodOrderer.MethodName.class)
+ ^
+  symbol: class TestMethodOrder
+src/compat/FixedApis.java:7: error: package MethodOrderer does not exist
+@TestMethodOrder(MethodOrderer.MethodName.class)
+                              ^
+src/compat/FixedApis.java:10: error: cannot find symbol
+    @Test
+     ^
+  symbol:   class Test
+  location: class FixedApis
+src/compat/FixedApis.java:12: error: cannot find symbol
+        Object loaded = ReflectionSupport.tryToLoadClass("java.lang.String").toOptional().orElseThrow();
+                        ^
+  symbol:   variable ReflectionSupport
+  location: class FixedApis
+8 errors
+javac exit status: 1
@@ -0,0 +1,32 @@
+JUnit 6.1.3, compiling FixedApis.java
+src/compat/FixedApis.java:1: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.MethodOrderer;
+                            ^
+src/compat/FixedApis.java:2: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.Test;
+                            ^
+src/compat/FixedApis.java:3: error: package org.junit.jupiter.api does not exist
+import org.junit.jupiter.api.TestMethodOrder;
+                            ^
+src/compat/FixedApis.java:4: error: package org.junit.platform.commons.support does not exist
+import org.junit.platform.commons.support.ReflectionSupport;
+                                         ^
+src/compat/FixedApis.java:7: error: cannot find symbol
+@TestMethodOrder(MethodOrderer.MethodName.class)
+ ^
+  symbol: class TestMethodOrder
+src/compat/FixedApis.java:7: error: package MethodOrderer does not exist
+@TestMethodOrder(MethodOrderer.MethodName.class)
+                              ^
+src/compat/FixedApis.java:10: error: cannot find symbol
+    @Test
+     ^
+  symbol:   class Test
+  location: class FixedApis
+src/compat/FixedApis.java:12: error: cannot find symbol
+        Object loaded = ReflectionSupport.tryToLoadClass("java.lang.String").toOptional().orElseThrow();
+                        ^
+  symbol:   variable ReflectionSupport
+  location: class FixedApis
+8 errors
+javac exit status: 1
@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.ankurm</groupId>
+  <artifactId>junit-6-migration</artifactId>
+  <version>1.0.0</version>
+  <name>junit-6-migration</name>
+  <description>The same tests run on JUnit 5.14.4 and JUnit 6.1.3, plus an API diff of the two releases</description>
+
+  <properties>
+    <maven.compiler.release>17</maven.compiler.release>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <!-- default is the new version; -Pjunit5 switches the whole build to 5.14.4 -->
+    <junit.version>6.1.3</junit.version>
+  </properties>
+
+  <profiles>
+    <profile>
+      <id>junit5</id>
+      <properties>
+        <junit.version>5.14.4</junit.version>
+      </properties>
+    </profile>
+    <profile>
+      <id>junit6</id>
+      <properties>
+        <junit.version>6.1.3</junit.version>
+      </properties>
+    </profile>
+  </profiles>
+
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>org.junit</groupId>
+        <artifactId>junit-bom</artifactId>
+        <version>${junit.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.platform</groupId>
+      <artifactId>junit-platform-launcher</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.vintage</groupId>
+      <artifactId>junit-vintage-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.13.2</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-surefire-plugin</artifactId>
+        <version>3.6.0</version>
+        <configuration>
+          <systemPropertyVariables>
+            <junit.version>${junit.version}</junit.version>
+          </systemPropertyVariables>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>
@@ -0,0 +1,159 @@
+#!/usr/bin/env python3
+"""Compare the public API of JUnit 5.14.4 / Platform 1.14.4 against JUnit 6.1.3 straight from the jars.
+
+Writes output/01-versions-and-baseline.txt and output/02-removed-api.txt.
+Needs a JDK (javap) on PATH or via JAVA_HOME, and access to Maven Central.
+"""
+import collections
+import os
+import pathlib
+import re
+import subprocess
+import time
+import urllib.error
+import urllib.request
+import zipfile
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent
+JARS = ROOT / "target" / "jars"
+OUT = ROOT / "output"
+JAVAP = os.path.join(os.environ["JAVA_HOME"], "bin", "javap") if os.environ.get("JAVA_HOME") else "javap"
+
+OLD, NEW, PLATFORM_OLD = "5.14.4", "6.1.3", "1.14.4"
+ARTIFACTS = [
+    ("jupiter", "junit-jupiter-api"), ("jupiter", "junit-jupiter-engine"), ("jupiter", "junit-jupiter-params"),
+    ("platform", "junit-platform-commons"), ("platform", "junit-platform-engine"), ("platform", "junit-platform-launcher"),
+    ("platform", "junit-platform-suite-api"), ("platform", "junit-platform-suite-engine"), ("platform", "junit-platform-testkit"),
+    ("vintage", "junit-vintage-engine"),
+]
+
+
+def version_for(group, which):
+    if which == "new":
+        return NEW
+    return PLATFORM_OLD if group == "platform" else OLD
+
+
+def fetch(url, dest):
+    if dest.exists():
+        return
+    for _ in range(8):
+        try:
+            with urllib.request.urlopen(url) as r:
+                dest.write_bytes(r.read())
+            return
+        except urllib.error.HTTPError as e:
+            if e.code != 429:
+                raise
+            time.sleep(4)
+    raise RuntimeError("rate limited: " + url)
+
+
+def jar(group, artifact, which):
+    v = version_for(group, which)
+    dest = JARS / f"{artifact}-{v}.jar"
+    fetch(f"https://repo1.maven.org/maven2/org/junit/{group}/{artifact}/{v}/{artifact}-{v}.jar", dest)
+    return dest
+
+
+def classes(path):
+    with zipfile.ZipFile(path) as z:
+        return sorted(n[:-6].replace("/", ".") for n in z.namelist()
+                      if n.endswith(".class") and not n.endswith("module-info.class") and "META-INF" not in n)
+
+
+def major(path):
+    with zipfile.ZipFile(path) as z:
+        name = next(n for n in z.namelist()
+                    if n.endswith(".class") and not n.endswith("module-info.class") and "META-INF" not in n)
+        b = z.read(name)
+    return int.from_bytes(b[6:8], "big")
+
+
+MEMBER = re.compile(r"^  ((?:public|protected)[^;]*);$")
+
+
+def dump(path):
+    """One javap call per jar. Returns {class: (is_public, class_deprecated, {member signature: deprecated?})}."""
+    names = [c for c in classes(path) if ".internal." not in c]
+    result = {}
+    # javap takes many class names at once; split the list to keep the command line short
+    for i in range(0, len(names), 150):
+        chunk = names[i:i + 150]
+        p = subprocess.run([JAVAP, "-v", "-protected", "-cp", str(path)] + chunk, capture_output=True, text=True)
+        cur_cls = None
+        for block in re.split(r"(?m)^Classfile ", p.stdout)[1:]:
+            lines = block.splitlines()
+            header = lines[0]
+            cls = re.search(r"!/(.*)\.class", header).group(1).replace("/", ".")
+            public = False
+            cls_dep = False
+            members, cur, in_pool, seen_flags = {}, None, False, False
+            for line in lines[1:]:
+                if not seen_flags and line.startswith("  flags:"):
+                    public = "ACC_PUBLIC" in line
+                    seen_flags = True
+                if line.startswith("Constant pool:"):
+                    in_pool = True
+                    continue
+                if in_pool:
+                    if line.startswith("{"):
+                        in_pool = False
+                    continue
+                m = MEMBER.match(line)
+                if m:
+                    cur = " ".join(m.group(1).split())
+                    members[cur] = False
+                    continue
+                if line.strip() == "Deprecated: true":
+                    if cur is None:
+                        cls_dep = True
+                    else:
+                        members[cur] = True
+                if line.startswith("}"):
+                    cur = None
+            if re.search(r"^Deprecated: true", block, re.M):
+                cls_dep = True
+            result[cls] = (public, cls_dep, members)
+    return result
+
+
+def main():
+    JARS.mkdir(parents=True, exist_ok=True)
+    OUT.mkdir(parents=True, exist_ok=True)
+    versions = [f"{'artifact':<34} {'5.x jar':<28} {'6.x jar':<28}"]
+    removed_classes = collections.defaultdict(list)
+    removed_members = collections.defaultdict(list)
+    added = collections.Counter()
+    for group, art in ARTIFACTS:
+        old, new = jar(group, art, "old"), jar(group, art, "new")
+        mo, mn = major(old), major(new)
+        versions.append(f"{art:<34} {version_for(group, 'old')} (Java {mo - 44}){'':<9} {NEW} (Java {mn - 44})")
+        do, dn = dump(old), dump(new)
+        co, cn = set(classes(old)), set(classes(new))
+        for c in sorted(co - cn):
+            if c in do and do[c][0]:
+                removed_classes[art].append((c, do[c][1]))
+        added[art] = len(cn - co)
+        for c in sorted(do):
+            if c in dn and do[c][0]:
+                for sig, dep in do[c][2].items():
+                    if sig not in dn[c][2]:
+                        removed_members[art].append((c, sig, dep))
+    (OUT / "01-versions-and-baseline.txt").write_text("\n".join(versions) + "\n")
+    lines = []
+    for _, art in ARTIFACTS:
+        lines.append(f"== {art}: public classes removed: {len(removed_classes[art])}, "
+                     f"members removed from classes that remain: {len(removed_members[art])}, "
+                     f"new classes: {added[art]}")
+        for c, dep in removed_classes[art]:
+            lines.append(f"  class  {c}  [{'deprecated in 5.x' if dep else 'NOT deprecated in 5.x'}]")
+        for c, sig, dep in removed_members[art]:
+            lines.append(f"  member {c}: {sig}  [{'deprecated in 5.x' if dep else 'NOT deprecated in 5.x'}]")
+    (OUT / "02-removed-api.txt").write_text("\n".join(lines) + "\n")
+    print("\n".join(versions))
+    print("\n".join(l for l in lines if l.startswith("==")))
+
+
+if __name__ == "__main__":
+    main()
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+# Compiles src/compat/OldApis.java against the JUnit 5.14.4 jars and then the 6.1.3 jars and records the compiler's answer.
+# Run scripts/api_diff.py first: it downloads the jars into target/jars.
+set -uo pipefail
+cd "$(dirname "$0")/.."
+unset JAVA_TOOL_OPTIONS
+mkdir -p output target/compat
+J=target/jars
+[ -f "$J/apiguardian-api-1.1.2.jar" ] || curl -sSf --retry 5 -o "$J/apiguardian-api-1.1.2.jar" \
+  https://repo1.maven.org/maven2/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar
+compile() {   # $1 = label, $2 = jupiter version, $3 = platform version
+  for src in OldApis:05-old-apis FixedApis:06-fixed-apis; do
+    {
+      echo "JUnit $2, compiling ${src%%:*}.java"
+      javac -Xlint:deprecation --release 17 -d "target/compat/$1" \
+        -cp "$J/junit-jupiter-api-$2.jar:$J/junit-platform-commons-$3.jar:$J/apiguardian-api-1.1.2.jar" "src/compat/${src%%:*}.java" 2>&1 \
+        | sed -e '/^Picked up/d'
+      echo "javac exit status: ${PIPESTATUS[0]}"
+    } > "output/${src##*:}-$2.txt"
+  done
+}
+compile junit5 5.14.4 1.14.4
+compile junit6 6.1.3 6.1.3
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+# Regenerates every file in output/. Needs JDK 17+ (built with 25), Maven 3.9 and access to Maven Central.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+unset JAVA_TOOL_OPTIONS
+
+python3 scripts/api_diff.py >/dev/null            # 01, 02: jar-to-jar API diff (also downloads the jars)
+mvn -B -q clean test -Pjunit5                      # 03, 04 on JUnit 5.14.4
+mvn -B -q clean test -Pjunit6                      # 03, 04 on JUnit 6.1.3
+./scripts/compile-old-apis.sh                      # 05, 06
+ls -1 output
@@ -0,0 +1,15 @@
+import org.junit.jupiter.api.MethodOrderer;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+import org.junit.platform.commons.support.ReflectionSupport;
+
+/** The replacements for OldApis. This compiles on 5.14.4 and on 6.1.3, so make these changes before you upgrade. */
+@TestMethodOrder(MethodOrderer.MethodName.class)
+class FixedApis {
+
+    @Test
+    void usesTheReplacements() {
+        Object loaded = ReflectionSupport.tryToLoadClass("java.lang.String").toOptional().orElseThrow();
+        System.out.println(loaded);
+    }
+}
@@ -0,0 +1,17 @@
+import org.junit.jupiter.api.MethodOrderer;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+import org.junit.jupiter.api.io.TempDir;
+import org.junit.platform.commons.support.ReflectionSupport;
+
+/** Compiled by scripts/compile-old-apis.sh against each JUnit version. Not part of the Maven build. */
+@TestMethodOrder(MethodOrderer.Alphanumeric.class)
+class OldApis {
+
+    @Test
+    void usesRemovedApis() {
+        Object loaded = ReflectionSupport.loadClass("java.lang.String");
+        String property = TempDir.SCOPE_PROPERTY_NAME;
+        System.out.println(loaded + " " + property);
+    }
+}
@@ -0,0 +1,86 @@
+package com.ankurm.junitmigration;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+import org.junit.platform.engine.TestExecutionResult;
+import org.junit.platform.launcher.TestExecutionListener;
+import org.junit.platform.launcher.TestIdentifier;
+import org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder;
+import org.junit.platform.launcher.core.LauncherFactory;
+
+/**
+ * Runs the same probe classes on whichever JUnit is on the class path and writes what happened to
+ * output/NN-name-&lt;version&gt;.txt. The two versions are meant to give different answers in places, so this
+ * test records them instead of asserting them. It does assert that the probes ran at all.
+ */
+class BehaviourTest {
+
+    private static final String VERSION = System.getProperty("junit.version", "unknown");
+
+    @Test
+    void csvBehaviour() throws IOException {
+        List<String> lines = run(CsvProbe.class);
+        write("03-csv-behaviour", lines);
+        assertTrue(lines.size() > 10, "probe produced results");
+    }
+
+    @Test
+    void vintageStillRunsJUnit4() throws IOException {
+        List<String> lines = run(LegacyJUnit4Test.class);
+        write("04-vintage-junit4", lines);
+        assertTrue(lines.stream().anyMatch(l -> l.contains("stillRuns") && l.contains("SUCCESSFUL")), "junit 4 test ran");
+    }
+
+    private static List<String> run(Class<?> probe) {
+        List<String> lines = new ArrayList<>();
+        var request = LauncherDiscoveryRequestBuilder.request().selectors(selectClass(probe)).build();
+        var launcher = LauncherFactory.create();
+        launcher.execute(request, new TestExecutionListener() {
+            @Override
+            public void executionSkipped(TestIdentifier id, String reason) {
+                lines.add(String.format("%-11s %s -> %s", "SKIPPED", id.getDisplayName(), reason));
+            }
+
+            @Override
+            public void executionFinished(TestIdentifier id, TestExecutionResult result) {
+                // a parameterized method is a container: report it too when it fails as a whole
+                if (!id.isTest() && result.getStatus() == TestExecutionResult.Status.SUCCESSFUL) {
+                    return;
+                }
+                if (!id.isTest() && id.getParentId().isEmpty()) {
+                    return;
+                }
+                String outcome = result.getStatus().name();
+                String message = result.getThrowable().map(t -> " -> " + t.getClass().getSimpleName() + ": "
+                        + firstLine(t.getMessage())).orElse("");
+                lines.add(String.format("%-11s %s%s%s", outcome, id.isTest() ? "" : "[method] ", id.getDisplayName(), message));
+            }
+        });
+        return lines;
+    }
+
+    private static String firstLine(String s) {
+        if (s == null) {
+            return "";
+        }
+        String one = s.lines().findFirst().orElse("");
+        return one.length() > 110 ? one.substring(0, 110) + "..." : one;
+    }
+
+    private static void write(String name, List<String> lines) throws IOException {
+        Path dir = Path.of("output");
+        Files.createDirectories(dir);
+        List<String> out = new ArrayList<>();
+        out.add("JUnit " + VERSION);
+        out.addAll(lines);
+        Files.write(dir.resolve(name + "-" + VERSION + ".txt"), out);
+    }
+}
@@ -0,0 +1,56 @@
+package com.ankurm.junitmigration;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvFileSource;
+import org.junit.jupiter.params.provider.CsvSource;
+
+/**
+ * Not run by Surefire (the name does not end in Test). {@link BehaviourTest} launches it through the
+ * JUnit Platform Launcher and records what each invocation was called and whether it passed, on whichever
+ * JUnit version is on the class path.
+ */
+class CsvProbe {
+
+    @ParameterizedTest
+    @CsvSource({
+            "apple, 1",
+            "'a,b', 2",
+            "  padded  , 3",
+            "'', 4",
+            ", 5",
+            "NIL, 6",
+            "'it''s', 7",
+            "\"dq\", 8"
+    })
+    void basicRows(String name, int n) {
+    }
+
+    @ParameterizedTest
+    @CsvSource(value = {"x;1", "y;2"}, delimiter = ';', useHeadersInDisplayName = false)
+    void customDelimiter(String name, int n) {
+    }
+
+    @ParameterizedTest
+    @CsvSource(textBlock = """
+            name, qty
+            widget, 4
+            'multi word', 5
+            """, useHeadersInDisplayName = true)
+    void textBlockWithHeader(String name, int qty) {
+    }
+
+    @ParameterizedTest
+    @CsvSource(value = {"a,b,c"})
+    void tooManyColumnsForParameters(String first) {
+    }
+
+    @ParameterizedTest
+    @CsvSource(value = {"1234567890,1"}, maxCharsPerColumn = 5)
+    void columnLongerThanLimit(String value, int n) {
+    }
+
+    @ParameterizedTest
+    @CsvFileSource(resources = "/probe.csv", numLinesToSkip = 1)
+    void fileRows(String name, int n) {
+    }
+}
@@ -0,0 +1,14 @@
+package com.ankurm.junitmigration;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+/** A JUnit 4 test. It is discovered by the Vintage engine, not by Jupiter. */
+public class LegacyJUnit4Test {
+
+    @Test
+    public void stillRuns() {
+        assertEquals(4, 2 + 2);
+    }
+}
@@ -0,0 +1,5 @@
+name,n
+one,1
+"two, with comma",2
+"line
+break",3