This is a test for a regression from #22512 where param values were written as a list.

The test passes when the change to ApiClient.kt is reverted. Fails on the regression:

Expected :/pet/findByStatus?status=pending,available
Actual   :/pet/findByStatus?status=%5Bpending%2Cavailable%5D

Expected :/user/login?username=myUsername&password=myPassword
Actual   :/user/login?username=%5BmyUsername%5D&password=%5BmyPassword%5D

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

I did not run generators because it fails:

[pool-1-thread-14] Generation failed for csharp: (IllegalArgumentException) The input (net10.0) contains Invalid .NET framework version: net10.0. List of supported versions: netstandard1.3, netstandard1.4, netstandard1.5, netstandard1.6, netstandard2.0, netstandard2.1, net47, net48, net8.0, net9.0
java.lang.IllegalArgumentException: The input (net10.0) contains Invalid .NET framework version: net10.0. List of supported versions: netstandard1.3, netstandard1.4, netstandard1.5, netstandard1.6, netstandard2.0, netstandard2.1, net47, net48, net8.0, net9.0
        at org.openapitools.codegen.languages.CSharpClientCodegen.processOpts(CSharpClientCodegen.java:818)

Summary by cubic

Adds Kotlin integration tests to verify query parameter encoding in the Spring RestClient and catch the regression from #22512 where values were wrapped as lists. Tests cover PetApi findByStatus (comma-separated list) and UserApi login (single values).

• Dependencies
  • Add spring-boot-test for MockServerRestClientCustomizer.

^{Written for commit 6767688. Summary will update automatically on new commits.}