[Kotlin][jvm-spring-webclient] Support accessing basePath & basePathWithoutHost

[svenallers]

This PR gives the option to access basePath & basePathWithoutHost with the Kotling Spring Webclient. This is already possible for many clients and the implemented approach is based on how it is implemented for the Multiplatform client, but improved in the sense that it's also possible to access basePathWithoutHost. For us this feature would be very useful to have as we do versioning via the path which we include as base path into the OpenAPI definitions.

Apart from the feature I added additional Kotlin assertion classes to check for companions, functions & secondary constructors for testing purposes. I also added some abstract assertion classes on the way, because I realized that there was a lot of copy paste work involved during implementation of the new assertion classes.

@karismann @Zomzog @andrewemery @4brunu @yutaka0m @stefankoppier @e5l

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Summary by cubic

Expose base URL and base path in Kotlin JVM Spring WebClient clients via generated constants and helpers, plus a simple way to build clients with a versioned base path. This improves support for path‑based versioning and aligns with other Kotlin clients.

• New Features

  • Generate ApiClient companion constants: BASE_URL (from basePath) and BASE_PATH_WITHOUT_HOST (from basePathWithoutHost).
  • Add createUrlWithBasePath(baseUrl, basePath = ApiClient.BASE_PATH_WITHOUT_HOST) to safely join URL and base path.
  • API classes: default secondary constructor parameter baseUrl = ApiClient.BASE_URL.
  • API classes: companion function createWithBasePath(baseUrl, basePath = ApiClient.BASE_PATH_WITHOUT_HOST).

• Refactors

  • Introduce reusable Kotlin PSI assertion helpers for functions, parameters, companions, and secondary constructors; remove old ParameterAssert.
  • Add tests verifying constants, helper function, and constructors for jvm-spring-webclient; update samples accordingly.

^{Written for commit 49fae38. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 40 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="samples/client/petstore/kotlin-jvm-spring-2-webclient/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt">

<violation number="1" location="samples/client/petstore/kotlin-jvm-spring-2-webclient/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt:82">
P2: createUrlWithBasePath blindly appends basePath even when baseUrl already includes it (BASE_URL already ends with /v2 and basePath defaults to /v2), yielding double base paths like http://petstore.swagger.io/v2/v2 when using ApiClient.BASE_URL.</violation>
</file>

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[cubic-dev-ai]

No issues found across 622 files

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