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Add testing-no-containers module: WireMock, MockWebServer, @MockitoBean/@MockitoSpyBean (post #43)

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Claude
2026-10-08 06:19:52 +00:00
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| [`i18n/`](i18n) | [Internationalization (i18n) in Spring Boot 4: MessageSource, LocaleResolver and Localized ProblemDetail](https://ankurm.com/spring-boot-4-internationalization-messagesource-localeresolver-problemdetail/) | English, Marathi and Hindi message bundles, `Accept-Language` vs a cookie resolver, apostrophes and Devanagari digits in `MessageFormat`, the JVM default locale as a hidden fallback, localized validation messages and `ProblemDetail` titles |
| [`aot-cache/`](aot-cache) | [Faster Spring Boot Startup with the JDK AOT Cache (JEP 514/515): Benchmarks vs CDS and Native](https://ankurm.com/spring-boot-jdk-aot-cache-jep-514-515-startup-benchmarks/) | the JDK 25 AOT cache trained two ways, against a plain JVM, AppCDS, Spring's own AOT output and a GraalVM native image (ten interleaved rounds each), first-request latency, 24 cases where the cache silently stops applying (jar, timestamp, JVM build, ZGC, compact headers), `-XX:AOTMode=on`, Docker layer arithmetic |
| [`kotlin/`](kotlin) | [Kotlin with Spring Boot 4.1: Null Safety, Coroutines, and What Java Developers Get Wrong](https://ankurm.com/) | Kotlin 2.3.21 (Boot 4.1.1's own managed version, not the latest GA), the real `@Configuration class may not be final` and `@Bean method must not be private or final` failures without the allopen/noarg `spring`/`jpa` compiler plugins, `suspend fun`/`Flow<T>` controller methods proven to still resume off a Tomcat thread under plain `spring-boot-starter-webmvc`, a JSpecify `@NullMarked` Java method that still NPEs at runtime because the contract isn't runtime-checked, and `TestRestTemplate` confirmed absent from Boot 4.1's `spring-boot-test` jar |
| [`testing-no-containers/`](testing-no-containers) | [Testing Spring Boot 4 Without Containers: WireMock, MockWebServer and @MockitoBean](https://ankurm.com/) | `@MockBean`'s total removal proven with a real `javac` failure, `@MockitoBean`/`@MockitoSpyBean` context-cache behavior proven with real `org.springframework.test.context.cache` DEBUG log lines, WireMock fault injection against a real `RestClient`, a real `NoClassDefFoundError` from mixing `wiremock` with `wiremock-jetty12` (fixed with `wiremock-standalone`), and MockWebServer's `SocketEffect.ShutdownConnection` for genuinely severing a connection mid-response |
`core-di`, `core-beans`, `custom-starter`, `core-events`, `multi-datasource`, `i18n`, `aot-cache`, `kotlin` and `hexagonal` are the exception: they have **no `docs/` folder**. Their deeper material lives in
`core-di`, `core-beans`, `custom-starter`, `core-events`, `multi-datasource`, `i18n`, `aot-cache`, `kotlin`, `testing-no-containers` and `hexagonal` are the exception: they have **no `docs/` folder**. Their deeper material lives in
collapsible sections inside the articles themselves, and their captured output sits in a top-level `output/`
directory instead of `docs/output/` (`hexagonal` is also the one multi-module reactor in this
repo, so its output sits one level deeper still, under each module: `core/output/`,