test: migrate extensions-contrib tests to JUnit 5

[FrankChen021]

Part of #13948.

Summary

This PR migrates the remaining extensions-contrib test source usage from JUnit 4 to JUnit 5.

• All migrated extensions-contrib test sources use Jupiter tests and assertions.
• Hamcrest-free assertions are used throughout, including druid-exact-count-bitmap.
• Direct test-scoped junit:junit and org.hamcrest:hamcrest declarations have been removed from the remaining contrib POMs.
• No production code changes are included.

Stacking and prerequisite policy

This PR intentionally owns only extensions-contrib. It does not duplicate or modify shared SQL or server fixtures.

The coordinated prerequisite stack is:

• The SQL/Quidem batch owns BaseCalciteQueryTest, DruidExceptionAssertions, QueryTestRunner, and the related SQL test migrations. The validated local prerequisite ref is codex/tmp-junit5-sql-quidem at 07c84bc5ce3443236836d3d462c84a5ed65602d5.
• The server batch owns server/QueryStackTests and its related server fixture migrations. The validated local prerequisite ref is codex/tmp-junit5-server at f725c2c490294a7d6089e0e0b4063c080012b1ac.

Those shared paths are deliberately absent from this PR. The prerequisite branches are not currently published as upstream PR branches, so this PR remains based on master; once those batches are published or merged, rebase/retarget this contrib-only branch onto that stack before merging.

Against current upstream master alone, SQL test compilation for the inherited contrib fixtures still requires the org.hamcrest.Matcher signatures exposed by the pre-migration BaseCalciteQueryTest, and the old server fixture still contains JUnit 4 runtime usage. Those are the exact prerequisite dependencies; this PR does not retain compatibility declarations for them. This is a shared SQL/server prerequisite issue, not a dependency on #19875 itself.

Related migration PRs: #19875, #19876, #19877, #19878, #19879, #19880, #19881, and #19882.

Validation

• CloudFiles focused tests: 3 tests passed, 0 failures: CloudFilesObjectApiProxyTest and CloudFilesByteSourceTest.
• Exact-count SQL test: 5 tests passed, 0 failures in a temporary local compatibility classpath used only to exercise the migrated contrib test; the temporary JUnit 4/Hamcrest overlay was removed before commit.
• Checkstyle and SpotBugs for the six affected contrib modules (the five dependency-cleanup modules plus CloudFiles): build passed, 0 Checkstyle violations, 0 SpotBugs bugs/errors.
• Source audit: no JUnit 4, Hamcrest, Matcher<...>, or Hamcrest assertThat usage remains under extensions-contrib/**/src/test.
• POM audit: no direct JUnit 4/Vintage/JUnitParams/Hamcrest declarations remain under extensions-contrib.
• git diff --check: passed.

The two Copilot comments on CloudFiles were fixed in 901605720b and are now handled as resolved/outdated threads: the assertion argument order is corrected, and the first openStream() call uses Assertions.assertThrows(IOException.class, ...).

[Copilot]

Pull request overview

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Migrates remaining extensions-contrib test suites from JUnit 4 to JUnit 5 (Jupiter), updating test code and module POMs to remove legacy JUnit 4/Vintage/Hamcrest/JUnitParams usage where possible.

Changes:

• Updated Java test sources to use JUnit Jupiter annotations/assertions (including parameterized tests and exception assertions).
• Updated module POMs to add JUnit Jupiter dependencies and remove JUnit 4 / Vintage / JUnitParams / unnecessary Hamcrest dependencies.
• Introduced a small JUnit 5 helper (DeltaAssertions) to replace Hamcrest-based DruidException matchers in Delta Lake tests.

Reviewed changes

Copilot reviewed 202 out of 202 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
extensions-contrib/virtual-columns/src/test/java/org/apache/druid/segment/MapVirtualColumnTopNTest.java	Migrates TopN tests from JUnit 4 rules to JUnit 5 assertions.
extensions-contrib/virtual-columns/src/test/java/org/apache/druid/segment/MapVirtualColumnGroupByTest.java	Migrates GroupBy tests from JUnit 4 lifecycle/assertions to JUnit 5.
extensions-contrib/virtual-columns/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/time-min-max/src/test/java/org/apache/druid/query/aggregation/TimestampMinMaxAggregatorTest.java	Migrates parameterized tests from JUnit 4 runner to JUnit 5 @ParameterizedTest.
extensions-contrib/time-min-max/src/test/java/org/apache/druid/query/aggregation/TimestampMinMaxAggregatorFactoryTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/time-min-max/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Vintage-related deps.
extensions-contrib/thrift-extensions/src/test/java/org/apache/druid/data/input/thrift/ThriftInputFormatTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/thrift-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 + Hamcrest deps.
extensions-contrib/tdigestsketch/src/test/java/org/apache/druid/query/aggregation/tdigestsketch/TDigestSketchToQuantilesPostAggregatorTest.java	Migrates ExpectedException rule to JUnit 5 assertThrows.
extensions-contrib/tdigestsketch/src/test/java/org/apache/druid/query/aggregation/tdigestsketch/TDigestSketchToQuantilePostAggregatorTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/tdigestsketch/src/test/java/org/apache/druid/query/aggregation/tdigestsketch/TDigestSketchObjectStrategyTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/tdigestsketch/src/test/java/org/apache/druid/query/aggregation/tdigestsketch/TDigestSketchAggregatorFactoryTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/tdigestsketch/pom.xml	Adds JUnit Jupiter deps; retains test Hamcrest for inherited Matcher signatures.
extensions-contrib/statsd-emitter/src/test/java/org/apache/druid/emitter/statsd/StatsDEmitterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/statsd-emitter/src/test/java/org/apache/druid/emitter/statsd/DimensionConverterTest.java	Migrates assertions/imports to JUnit 5 (JUnit 5 message arg order).
extensions-contrib/statsd-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/sqlserver-metadata-storage/src/test/java/org/apache/druid/metadata/storage/sqlserver/SQLServerConnectorTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/sqlserver-metadata-storage/src/test/java/org/apache/druid/metadata/storage/sqlserver/CustomStatementRewriterTest.java	Migrates lifecycle/assertions to JUnit 5; replaces junit.framework.Assert usage.
extensions-contrib/sqlserver-metadata-storage/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/spectator-histogram/src/test/java/org/apache/druid/spectator/histogram/sql/SpectatorHistogramSqlAggregatorTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/spectator-histogram/src/test/java/org/apache/druid/spectator/histogram/SpectatorHistogramIndexBasedComplexColumnTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/spectator-histogram/pom.xml	Adds JUnit Jupiter deps + mockito-junit-jupiter; retains Hamcrest for inherited Matcher signatures.
extensions-contrib/redis-cache/src/test/java/org/apache/druid/client/cache/RedisClusterCacheTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/redis-cache/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Hamcrest dependency declarations.
extensions-contrib/rabbit-stream-indexing-service/src/test/java/org/apache/druid/indexing/rabbitstream/RabbitStreamIndexTaskIOConfigTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/rabbit-stream-indexing-service/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Hamcrest deps.
extensions-contrib/prometheus-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/opentsdb-emitter/src/test/java/org/apache/druid/emitter/opentsdb/OpentsdbSenderTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/opentsdb-emitter/src/test/java/org/apache/druid/emitter/opentsdb/OpentsdbEventTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/opentsdb-emitter/src/test/java/org/apache/druid/emitter/opentsdb/OpentsdbEmitterConfigTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/opentsdb-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/opentelemetry-emitter/src/test/java/org/apache/druid/emitter/opentelemetry/OpenTelemetryEmitterTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/opentelemetry-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongSumAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongSumAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMinAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMinAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMeanNoNullAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMeanNoNullAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMeanAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMeanAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMaxAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/LongMaxAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleSumAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleSumAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMinAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMinAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMeanNoNullAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMeanNoNullAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMeanAveragerWithPeriodTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMeanAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMeanAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMaxAveragerTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/DoubleMaxAveragerFactoryTest.java	Replaces Hamcrest instance checks with JUnit 5 assertInstanceOf.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/BaseAveragerFactoryTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/averagers/AveragerFactoryWrapperTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/PostAveragerAggregatorCalculatorTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/moving-average-query/src/test/java/org/apache/druid/query/movingaverage/MovingAverageQueryTest.java	Migrates from JUnit 4 parameterized runner to Jupiter parameterized tests.
extensions-contrib/moving-average-query/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Hamcrest deps.
extensions-contrib/momentsketch/src/test/java/org/apache/druid/query/aggregation/momentsketch/aggregator/MomentSketchQuantilePostAggregatorTest.java	Migrates ExpectedException rule to JUnit 5 assertThrows.
extensions-contrib/momentsketch/src/test/java/org/apache/druid/query/aggregation/momentsketch/aggregator/MomentSketchMinPostAggregatorTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/momentsketch/src/test/java/org/apache/druid/query/aggregation/momentsketch/aggregator/MomentSketchMaxPostAggregatorTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/momentsketch/src/test/java/org/apache/druid/query/aggregation/momentsketch/aggregator/MomentSketchAggregatorFactoryTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/momentsketch/src/test/java/org/apache/druid/query/aggregation/momentsketch/MomentSketchWrapperTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/momentsketch/src/test/java/org/apache/druid/query/aggregation/momentsketch/MomentSketchObjectStrategyTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/momentsketch/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/kafka-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Hamcrest deps.
extensions-contrib/influxdb-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/influx-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/JUnitParams/Hamcrest deps.
extensions-contrib/grpc-query/src/test/java/org/apache/druid/grpc/client/GrpcResponseHandlerTest.java	Migrates static assertions to JUnit 5.
extensions-contrib/grpc-query/src/test/java/org/apache/druid/grpc/GrpcQueryTest.java	Migrates static assertions to JUnit 5.
extensions-contrib/grpc-query/src/test/java/org/apache/druid/grpc/DriverTest.java	Migrates static assertions to JUnit 5.
extensions-contrib/grpc-query/src/test/java/org/apache/druid/grpc/BasicAuthTest.java	Migrates assertions to JUnit 5 (including assertThrows).
extensions-contrib/grpc-query/pom.xml	Adds JUnit Jupiter deps; retains test Hamcrest for inherited Matcher signatures.
extensions-contrib/graphite-emitter/src/test/java/org/apache/druid/emitter/graphite/GraphiteEmitterConfigTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/graphite-emitter/src/test/java/org/apache/druid/emitter/graphite/DruidToWhiteListBasedConverterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/graphite-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/JUnitParams deps.
extensions-contrib/gce-extensions/src/test/java/org/apache/druid/indexing/overlord/autoscaling/gce/GceUtilsTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/gce-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/druid-ranger-security/src/test/java/org/apache/druid/security/ranger/authorizer/RangerAuthorizerTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/druid-ranger-security/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/input/RestCatalogTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/input/ResidualFilterModeTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/input/LocalCatalogTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/input/HiveIcebergCatalogTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/input/GlueIcebergCatalogTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/filter/IcebergTimeWindowFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/filter/IcebergRangeFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/filter/IcebergOrFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/filter/IcebergNotFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/filter/IcebergIntervalFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/filter/IcebergEqualsFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/src/test/java/org/apache/druid/iceberg/filter/IcebergAndFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-iceberg-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/input/DeltaTimeUtilsTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/input/DeltaInputSourceSerdeTest.java	Migrates assertions/imports to JUnit 5; replaces assertThrows.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/input/DeltaInputRowTest.java	Removes Hamcrest matcher usage, adopts DeltaAssertions helper.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaOrFilterTest.java	Replaces Hamcrest-based exception matcher with DeltaAssertions.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaNotFilterTest.java	Replaces Hamcrest-based exception matcher with DeltaAssertions.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaLessThanOrEqualsFilterTest.java	Replaces Hamcrest-based exception matcher with DeltaAssertions.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaLessThanFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaGreaterThanOrEqualsFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaGreaterThanFilterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaEqualsFilterTest.java	Replaces Hamcrest-based exception matcher with DeltaAssertions.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaAndFilterTest.java	Replaces Hamcrest-based exception matcher with DeltaAssertions.
extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/DeltaAssertions.java	Adds a JUnit 5 helper assertion for INVALID_INPUT DruidExceptions.
extensions-contrib/druid-deltalake-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Vintage/Hamcrest deps.
extensions-contrib/dropwizard-emitter/src/test/java/org/apache/druid/emitter/dropwizard/DropwizardEmitterConfigTest.java	Migrates lifecycle/assertions to JUnit 5; calls base setup in @BeforeEach.
extensions-contrib/dropwizard-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/distinctcount/src/test/java/org/apache/druid/query/aggregation/distinctcount/DistinctCountTopNQueryTest.java	Migrates lifecycle annotations to JUnit 5.
extensions-contrib/distinctcount/src/test/java/org/apache/druid/query/aggregation/distinctcount/DistinctCountTimeseriesQueryTest.java	Migrates @Test import to JUnit 5.
extensions-contrib/distinctcount/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Vintage/Hamcrest deps.
extensions-contrib/ddsketch/src/test/java/org/apache/druid/query/aggregation/ddsketch/DDSketchToQuantilesPostAggregatorTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/ddsketch/src/test/java/org/apache/druid/query/aggregation/ddsketch/DDSketchToQuantilePostAggregatorTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/ddsketch/src/test/java/org/apache/druid/query/aggregation/ddsketch/DDSketchObjectStrategyTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/ddsketch/src/test/java/org/apache/druid/query/aggregation/ddsketch/DDSketchAggregatorFactoryTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/ddsketch/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/consul-extensions/src/test/java/org/apache/druid/consul/discovery/ConsulServiceIdsTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/consul-extensions/src/test/java/org/apache/druid/consul/discovery/ConsulLeaderSelectorTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/consul-extensions/src/test/java/org/apache/druid/consul/discovery/ConsulDruidNodeDiscoveryProviderTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/consul-extensions/src/test/java/org/apache/druid/consul/discovery/ConsulDruidNodeAnnouncerTest.java	Migrates lifecycle/assertions to JUnit 5; removes JUnit4 runner.
extensions-contrib/consul-extensions/src/test/java/org/apache/druid/consul/discovery/ConsulClientsSecurityTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/consul-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/sum/CompressedBigDecimalSumSqlAggregatorTest.java	Migrates assertThrows static import to JUnit 5.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/sum/CompressedBigDecimalSumAggregatorTimeseriesTest.java	Adds Jupiter @Test annotations on overrides.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/sum/CompressedBigDecimalSumAggregatorTest.java	Adds Jupiter @Test annotation on override.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/sum/CompressedBigDecimalSumAggregatorGroupByTest.java	Converts JUnit 4 parameterized constructor pattern to Jupiter method parameterization.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/min/CompressedBigDecimalMinSqlAggregatorTest.java	Migrates assertThrows static import to JUnit 5.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/min/CompressedBigDecimalMinAggregatorTimeseriesTest.java	Adds Jupiter @Test annotations on overrides.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/min/CompressedBigDecimalMinAggregatorTest.java	Adds Jupiter @Test annotation on override.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/min/CompressedBigDecimalMinAggregatorGroupByTest.java	Converts JUnit 4 runner to Jupiter parameterized test method.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/max/CompressedBigDecimalMaxAggregatorTimeseriesTest.java	Adds Jupiter @Test annotations on overrides.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/max/CompressedBigDecimalMaxAggregatorTest.java	Adds Jupiter @Test annotation on override.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/max/CompressedBigDecimalMaxAggregatorGroupByTest.java	Converts JUnit 4 parameterized constructor pattern to Jupiter method parameterization.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/aggregator/CompressedBigDecimalAggregatorTestBase.java	Migrates base test helper assertions to JUnit 5.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/CompressedBigDecimalColumnTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/CompressedBigDecimalCachingTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/compressed-bigdecimal/src/test/java/org/apache/druid/compressedbigdecimal/ByteBufferCompressedBigDecimalTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/compressed-bigdecimal/pom.xml	Adds JUnit Jupiter deps; retains test Hamcrest for inherited Matcher signatures; removes JUnit 4/Vintage deps.
extensions-contrib/cloudfiles-extensions/src/test/java/org/apache/druid/storage/cloudfiles/CloudFilesObjectApiProxyTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/cloudfiles-extensions/src/test/java/org/apache/druid/storage/cloudfiles/CloudFilesDataSegmentPusherTest.java	Migrates TemporaryFolder rule to JUnit 5 @TempDir.
extensions-contrib/cloudfiles-extensions/src/test/java/org/apache/druid/storage/cloudfiles/CloudFilesByteSourceTest.java	Migrates assertions/imports and test annotation to JUnit 5.
extensions-contrib/cloudfiles-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4 dependency.
extensions-contrib/ambari-metrics-emitter/src/test/java/org/apache/druid/emitter/ambari/metrics/DruidToWhiteListBasedConverterTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/ambari-metrics-emitter/src/test/java/org/apache/druid/emitter/ambari/metrics/AmbariMetricsEmitterTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/ambari-metrics-emitter/src/test/java/org/apache/druid/emitter/ambari/metrics/AmbariMetricsEmitterConfigTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/ambari-metrics-emitter/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/JUnitParams deps.
extensions-contrib/aliyun-oss-extensions/src/test/java/org/apache/druid/storage/aliyun/OssTimestampVersionedDataFinderTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/aliyun-oss-extensions/src/test/java/org/apache/druid/storage/aliyun/OssStorageDruidModuleTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/aliyun-oss-extensions/src/test/java/org/apache/druid/storage/aliyun/OssObjectSummaryIteratorTest.java	Migrates assert message argument order to JUnit 5.
extensions-contrib/aliyun-oss-extensions/src/test/java/org/apache/druid/storage/aliyun/OssDataSegmentPusherTest.java	Migrates TemporaryFolder rule to JUnit 5 @TempDir, updates assertions.
extensions-contrib/aliyun-oss-extensions/src/test/java/org/apache/druid/storage/aliyun/OssDataSegmentPusherConfigTest.java	Migrates assertions/imports to JUnit 5.
extensions-contrib/aliyun-oss-extensions/src/test/java/org/apache/druid/storage/aliyun/OssDataSegmentKillerTest.java	Migrates from JUnit4 EasyMockRunner to JUnit5 EasyMockExtension.
extensions-contrib/aliyun-oss-extensions/src/test/java/org/apache/druid/storage/aliyun/OssDataSegmentArchiverTest.java	Migrates lifecycle/assertions to JUnit 5.
extensions-contrib/aliyun-oss-extensions/pom.xml	Adds JUnit Jupiter deps; removes JUnit 4/Hamcrest(3.0) dependency declarations.

Suppressed comments (2)

extensions-contrib/druid-deltalake-extensions/src/test/java/org/apache/druid/delta/filter/DeltaNotFilterTest.java:1

• Typo in the asserted message: 'requiers' should be 'requires'. If this string mirrors a production error message, updating the production message and this assertion together will improve consistency and user-facing readability.
  extensions-contrib/time-min-max/src/test/java/org/apache/druid/query/aggregation/TimestampMinMaxAggregatorTest.java:1
• This method name reads like a test case but is used as a per-invocation initializer for parameterized inputs. Renaming it to something like initParams(...) / setUpParams(...) (and keeping it non-public if possible) would make its intent clearer when scanning the test class.

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[FrankChen021]

Dependency ownership update: the shared SQL fixture migration is now PR #19909, the shared indexing fixtures are #19910, and the server fixtures are #19911. This contrib PR remains limited to extensions-contrib and keeps no JUnit 4 or Hamcrest compatibility declarations. Part of #13948.

[FrankChen021]

Audit of all 34 extensions-contrib/**/pom.xml files and all 563 Java files found one real issue:

• extensions-contrib/druid-exact-count-bitmap/pom.xml removed the legacy JUnit 4/Hamcrest dependencies and retained junit-jupiter-api, but omitted junit-jupiter-engine even though the module contains JUnit 5 tests. The fix adds the test-scoped Jupiter engine.

The full audit found zero remaining JUnit 4-related or Hamcrest imports and zero stale junit:junit, Vintage, JUnitParams, system-rules, or direct Hamcrest dependencies in extensions-contrib. The focused Bitmap64ExactCountModuleTest passed (1 test, 0 failures).

Fix committed as 6f8ef24e897e8c636af0c93491e22c402b32a310 and pushed to codex/junit5-migrate-extensions-contrib.

Reviewed 204 PR-changed files under extensions-contrib.

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This is an automated review by Codex GPT-5.5