[BUG][Go] Invalid code generated for default values of array parameters

[ctreatma]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

Given a parameter of type array with a default value defined, the Go generator produces invalid code:

else {
    var defaultValue []string = [port, virtual_network]
    r.include = &defaultValue
}

A valid form of the above code would look like this:

else {
    var defaultValue []string = []string{"port", "virtual_network"}
    r.include = &defaultValue
}

openapi-generator version

v7.8.0, but this issue was introduced by #15127 and has existed since roughly v7.0.1.

OpenAPI declaration file content or url

  - in: query
    name: include
    schema:
      default:
      - port
      - virtual_network
      items:
        type: string
      type: array
    style: form

Generation Details

Steps to reproduce

Related issues/PRs

Suggest a fix

[wing328]

in java (and properly php) abstract codegen, we need to call https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java#L1256 (a new function) to have better handling of default value in array (e.g. array of enum string)

we may need to leverage the same function in the abstract go codegen.

[gunivan]

The issue still happen at version 7.14.0

[ctreatma]

Also logged as #21077, which aims to be fixed by #22060