HTTP PATCH method not working when no request body defined in the resource.

[Prabhashi]

Description:

HTTP PATCH method is not working when no request body defined in a patch resource.

Steps to reproduce:

• Have a Patch resource as below in the API swagger definition.

/testpath/{param}:
    patch:
      tags:
        - testpath
      summary: summary.
      description: Test description.
      parameters:
        - name: param
          in: path
          description: Test param desc.
          required: true
          type: string
      responses:
        '200':
          description: successful operation
        '401':
          $ref: '#/responses/UnauthorizedError'
      x-auth-type: Application & Application User
      x-throttling-tier: Unlimited

So the above does not have request body.

• Created an API with this swagger file.
• When trying to invoke patch resource , it is not working because the resource path parameters does not append to the backend URL.

This scenario is working fine with APIM 4.0.

Affected Product Version:

APIM 2.6.0.79

Environment details (with versions):

• OS:
• Client:
• Env (Docker/K8s):

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Suggested Assignees:

[ashera96]

Duplicate of https://github.com/wso2/product-apim/issues/7462