[BUG][Dart] dioNext: BuiltList<String> gets brackets in query string

[markbeij]

openapi-generator version

openapi_generator: ^3.1.3

OpenAPI declaration file content or url

https://petstore.swagger.io/#/pet/findPetsByStatus

Generation Details

flutter pub run build_runner build --delete-conflicting-outputs

@Openapi(
    additionalProperties: AdditionalProperties(pubName: 'petstore_api_client', pubAuthor: 'www.blah.com'),
    inputSpecFile: 'https://petstore.swagger.io/v2/swagger.json',
    generatorName: Generator.dioNext,
    outputDirectory: '../petstore',
    overwriteExistingFiles: true,
    alwaysRun: true)
class ShuttelApiClientGeneratorConfig extends OpenapiGeneratorConfig {}

Steps to reproduce

1. Generate client using Generator.dioNext
2. Execute unit test: https://gist.github.com/markbeij/c23b32d4dbda7477ff673f2b3f9e827a.js

Expected url is: https://petstore.swagger.io/v2/pet/findByStatus?status=available
But got: https://petstore.swagger.io/v2/pet/findByStatus?status=%5Bavailable%5D

[markbeij]

@kuhnroyal maybe you can take a look at this?

[kuhnroyal]

What is the expected URL when you add 2 status enums?

Related to #8271 and #6681

[markbeij]

Thats a great question and I think it differs per API.
The petstore api expects https://petstore.swagger.io/v2/pet/findByStatus?status=available&status=pending&status=sold

[kuhnroyal]

Ok, this should be possible once I get around to solve #6681

[kuhnroyal]

Should be fixed by #9635 - would be great if you could test.