test(spring-boot): [Sample Tests 18] Move the Boot 4 WebFlux sample's tests into the module

[runningcode]

PR Stack (Sample Tests)

• test: [Sample Tests 1] Add an in-process MockSentryServer #6266 (base: main)
• test: [Sample Tests 2] Share the system-test envelope matchers #6267 (base: test: [Sample Tests 1] Add an in-process MockSentryServer #6266)
• test(logback): [Sample Tests 3] Move the logback system test into the module #6268 (base: test: [Sample Tests 2] Share the system-test envelope matchers #6267)
• test(otel): [Sample Tests 4] Add a smoke test for the built agent #6269 (base: test: [Sample Tests 2] Share the system-test envelope matchers #6267)
• test(otel): [Sample Tests 5] Test a Spring Boot app under the agent #6271 (base: test(otel): [Sample Tests 4] Add a smoke test for the built agent #6269)
• test(spring-boot): [Sample Tests 6] Move the Boot 3 Person test into the module #6292 (base: test(otel): [Sample Tests 5] Test a Spring Boot app under the agent #6271)
• test(spring-boot): [Sample Tests 7] Move the Boot 3 tracing and HTTP client tests #6293 (base: test(spring-boot): [Sample Tests 6] Move the Boot 3 Person test into the module #6292)
• test(spring-boot): [Sample Tests 8] Move the Boot 3 cache, metrics and flag tests #6294 (base: test(spring-boot): [Sample Tests 7] Move the Boot 3 tracing and HTTP client tests #6293)
• test(spring-boot): [Sample Tests 9] Move the Boot 3 GraphQL tests into the module #6295 (base: test(spring-boot): [Sample Tests 8] Move the Boot 3 cache, metrics and flag tests #6294)
• test(spring-boot): [Sample Tests 10] Move the Boot 3 Kafka test into the module #6296 (base: test(spring-boot): [Sample Tests 9] Move the Boot 3 GraphQL tests into the module #6295)
• test(spring-boot): [Sample Tests 11] Move the Boot 4 sample's tests into the module #6297 (base: test(spring-boot): [Sample Tests 10] Move the Boot 3 Kafka test into the module #6296)
• test(spring-boot): [Sample Tests 12] Move the Boot 4 Kafka test into the module #6298 (base: test(spring-boot): [Sample Tests 11] Move the Boot 4 sample's tests into the module #6297)
• test(spring-boot): [Sample Tests 13] Move the Boot 2 sample's tests into the module #6299 (base: test(spring-boot): [Sample Tests 12] Move the Boot 4 Kafka test into the module #6298)
• test(spring-boot): [Sample Tests 14] Move the Boot 2 GraphQL and Kafka tests #6300 (base: test(spring-boot): [Sample Tests 13] Move the Boot 2 sample's tests into the module #6299)
• build: [Sample Tests 15] Add an integrationTests task that runs every module's suites #6303 (base: test(spring-boot): [Sample Tests 14] Move the Boot 2 GraphQL and Kafka tests #6300)
• test(spring-boot): [Sample Tests 16] Replace the log4j2 Boot samples' system tests with a Log4j2 suite #6306 (base: build: [Sample Tests 15] Add an integrationTests task that runs every module's suites #6303)
• test(spring-boot): [Sample Tests 17] Move the Boot 3 WebFlux sample's tests into the module #6308 (base: test(spring-boot): [Sample Tests 16] Replace the log4j2 Boot samples' system tests with a Log4j2 suite #6306)
• test(spring-boot): [Sample Tests 18] Move the Boot 4 WebFlux sample's tests into the module #6310 (base: test(spring-boot): [Sample Tests 17] Move the Boot 3 WebFlux sample's tests into the module #6308)
• test(spring-boot): [Sample Tests 19] Move the Boot 2 WebFlux sample's tests into the module #6311 (base: test(spring-boot): [Sample Tests 18] Move the Boot 4 WebFlux sample's tests into the module #6310)
• test(spring-boot): [Sample Tests 20] Move the Boot 3 OTel no-agent sample's tests #6312 (base: test(spring-boot): [Sample Tests 19] Move the Boot 2 WebFlux sample's tests into the module #6311)
• test(spring-boot): [Sample Tests 21] Move the Boot 4 OTel no-agent sample's tests #6313 (base: test(spring-boot): [Sample Tests 20] Move the Boot 3 OTel no-agent sample's tests #6312)
• test(spring-boot): [Sample Tests 22] Move the Boot 2 OTel no-agent sample's tests #6314 (base: test(spring-boot): [Sample Tests 21] Move the Boot 4 OTel no-agent sample's tests #6313)
• test(spring-boot): [Sample Tests 23] Port the Boot 3 OTel agent sample's Person, tracing and Todo tests #6315 (base: test(spring-boot): [Sample Tests 22] Move the Boot 2 OTel no-agent sample's tests #6314)
• test(spring-boot): [Sample Tests 24] Port the rest of the Boot 3 OTel agent sample's tests #6316 (base: test(spring-boot): [Sample Tests 23] Port the Boot 3 OTel agent sample's Person, tracing and Todo tests #6315)
• test(spring-boot): [Sample Tests 25] Move the Boot 4 OTel agent sample's tests #6317 (base: test(spring-boot): [Sample Tests 24] Port the rest of the Boot 3 OTel agent sample's tests #6316)
• test(spring-boot): [Sample Tests 26] Move the Boot 2 OTel agent sample's tests #6318 (base: test(spring-boot): [Sample Tests 25] Move the Boot 4 OTel agent sample's tests #6317)
• test(spring): [Sample Tests 27] Move the Spring jakarta WAR sample's tests into the module #6319 (base: test(spring-boot): [Sample Tests 26] Move the Boot 2 OTel agent sample's tests #6318)
• test(spring): [Sample Tests 28] Move the Spring 7 WAR sample's tests into the module #6320 (base: test(spring): [Sample Tests 27] Move the Spring jakarta WAR sample's tests into the module #6319)
• test(spring): [Sample Tests 29] Move the Spring WAR sample's tests into the module #6321 (base: test(spring): [Sample Tests 28] Move the Spring 7 WAR sample's tests into the module #6320)
• test(log4j2): [Sample Tests 30] Move the log4j2 sample's system test into sentry-log4j2 #6322 (base: test(spring): [Sample Tests 29] Move the Spring WAR sample's tests into the module #6321)
• test(jul): [Sample Tests 31] Move the JUL sample's system test into sentry-jul #6323 (base: test(log4j2): [Sample Tests 30] Move the log4j2 sample's system test into sentry-log4j2 #6322)
• test(core): [Sample Tests 32] Add an end-to-end test of the core APIs over the HTTP transport #6324 (base: test(jul): [Sample Tests 31] Move the JUL sample's system test into sentry-jul #6323)
• test(async-profiler): [Sample Tests 33] Add an end-to-end test of a profiled transaction #6325 (base: test(core): [Sample Tests 32] Add an end-to-end test of the core APIs over the HTTP transport #6324)
• test(kafka): [Sample Tests 34] Add an end-to-end test of the raw Kafka client's tracing #6326 (base: test(async-profiler): [Sample Tests 33] Add an end-to-end test of a profiled transaction #6325)
• test(opentelemetry): [Sample Tests 35] Add an end-to-end test of the agentless OpenTelemetry setup #6327 (base: test(kafka): [Sample Tests 34] Add an end-to-end test of the raw Kafka client's tracing #6326)
• test(opentelemetry): [Sample Tests 36] Add an end-to-end test of the OTLP event linking #6328 (base: test(opentelemetry): [Sample Tests 35] Add an end-to-end test of the agentless OpenTelemetry setup #6327)
• test(spring-boot): [Sample Tests 37] Move the Boot 4 OTLP sample's tests into the module #6329 (base: test(opentelemetry): [Sample Tests 36] Add an end-to-end test of the OTLP event linking #6328)
• test: [Sample Tests 38] Remove the system-test runner and its Python mock server #6330 (base: test(spring-boot): [Sample Tests 37] Move the Boot 4 OTLP sample's tests into the module #6329)
• test: [Sample Tests 39] Remove the io.sentry.systemtest plugin and sentry-system-test-support #6331 (base: test: [Sample Tests 38] Remove the system-test runner and its Python mock server #6330)
• docs: [Sample Tests 40] Describe the in-module end-to-end tests instead of the system tests #6332 (base: test: [Sample Tests 39] Remove the io.sentry.systemtest plugin and sentry-system-test-support #6331)

---

📜 Description

Adds an integrationTestWebflux suite to sentry-spring-boot-4, a copy of the Boot 3 one from #6308 with the same tests: Person, DistributedTracing, Todo (WebClient) and the GraphQL greeting. The Boot 4 WebFlux sample's tests were copies of the Boot 3 WebFlux ones.

Changes for Spring Boot 4:

• WebClient.Builder: comes from Boot 4's webclient starter.
• TestRestTemplate: Boot 4 only provides it with @AutoConfigureTestRestTemplate. It also needs the restclient starter on the classpath; without it the context fails to load with NoClassDefFoundError: RestTemplateBuilder. Adding the starter doesn't pull in the servlet stack, so the app still runs on Netty.
• Jackson 3: tools.jackson.databind replaces com.fasterxml.jackson.databind.
• open modifiers dropped: this module applies kotlin-spring.
• Todo test port: read with @LocalServerPort. On Boot 4.0.0, the expected URL built from TestRestTemplate's root URI didn't match the span's http://localhost:<port>/... URL, so the test failed there; on 4.1.0 it matched. The Boot 4 servlet suite already uses @LocalServerPort.

The sample's Cache and Metrics copies run in this suite too, as in #6308. With no system tests left, the sample comes off the runner, the backend workflow and the Spring Boot 4 matrix, which now runs the new suite. integrationTests includes it too.

After a coverage audit against the sample's tests:

• Ports the tracing checks from test(spring-boot): [Sample Tests 7] Move the Boot 3 tracing and HTTP client tests #6293: the unsampled-trace test rejects any transaction for its request, and the sample_rand and deferred-sampling tests check the envelope header's trace ID, and a test client built outside the context, as in test(spring-boot): [Sample Tests 7] Move the Boot 3 tracing and HTTP client tests #6293, and restores the Cache and Metrics tests, as in test(spring-boot): [Sample Tests 17] Move the Boot 3 WebFlux sample's tests into the module #6308.

💡 Motivation and Context

This continues the WebFlux flavor with Boot 4.

💚 How did you test it?

• All 11 tests pass on Spring Boot 4.1.0.
• They also pass with the catalog set to 4.0.0, the matrix's oldest version.
• The slimmed sample still builds.
• :sentry-spring-boot-4:check passes.

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.
• Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.

🔮 Next steps

The Boot 2 WebFlux sample.

#skip-changelog

[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.61.0 (1)	release

⚙️ sentry-android Build Distribution Settings