Add spring-boot-starter-webflux-test and relocate the @WebFluxTest slice - #1122
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…` slice The SB3 package org.springframework.boot.test.autoconfigure.web.reactive splits in Spring Boot 4: @WebFluxTest, @AutoConfigureWebFlux and WebFluxTypeExcludeFilter move to spring-boot-webflux-test while the WebTestClient types move to spring-boot-webtestclient. Modules using the slice previously migrated without the dedicated starter and with stale imports, breaking test compilation.
MBoegers
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August 13, 2026 12:50
timtebeek
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What's changed?
MigrateToModularStartersaddsorg.springframework.boot:spring-boot-starter-webflux-test(test scope) when SB3 test sources use@WebFluxTestor@AutoConfigureWebFlux, andMigrateAutoconfigurePackagesrelocates the slice types (WebFluxTest,AutoConfigureWebFlux,WebFluxTypeExcludeFilter) fromorg.springframework.boot.test.autoconfigure.web.reactivetoorg.springframework.boot.webflux.test.autoconfigure.What's your motivation?
Customer-reported: after the Spring Boot 4 migration, modules whose tests use
@WebFluxTestfail to compile — the annotation keeps its SB3 FQN and the dedicated SB4 starter is never added. The servlet twin has both halves (spring-boot-starter-webmvc-testentries + thetest.autoconfigure.web.servletChangePackage); the reactive slice had neither.Anything in particular you'd like reviewers to focus on?
ChangePackage: the SB3 package splits — its WebTestClient types move tospring-boot-webtestclient(the existing block right below).@AutoConfigureWebTestClientusers don't getspring-boot-starter-webflux-test(which aggregatesspring-boot-starter-webflux).doesNotAddWebFluxTestStarterForAutoConfigureWebTestClientUsageguards this.WebFluxTestContextBootstrapperis package-private in SB3 → no ChangeType.Checklist