Hi, one question, I have an openAPI 3.0.3 spec with "oneOf" for body responses, when I match the pact agains swagger-mock-validator, I get the error "response.body.incompatible: 1". exists any matcher that allows to match with one of the responses?

We'll need more information to be able to help with this. What is in your pact? What is in your spec?

yes, it should match, but i got this even with a simple example. This is my pact.json

{
  "consumer": {
    "name": "consumer-sync"
  },
  "interactions": [
    {
      "description": "Read item",
      "request": {
        "matchingRules": {
          "path": {
            "combine": "AND",
            "matchers": [
              {
                "match": "regex",
                "regex": "/read/[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
              }
            ]
          }
        },
        "method": "GET",
        "path": "/read/2b4665bb-8cf0-dc20-1d1c-fc143c17eb84"
      },
      "response": {
        "body": {
          "id": "e2490de5-5bd3-43d5-b7c4-526e33f71304",
          "number": 100
        },
        "generators": {
          "body": {
            "$.id": {
              "type": "Uuid"
            },
            "$.number": {
              "max": 2147483647,
              "min": 0,
              "type": "RandomInt"
            }
          }
        },
        "headers": {
          "Content-Type": "application/json"
        },
        "matchingRules": {
          "body": {
            "$.id": {
              "combine": "AND",
              "matchers": [
                {
                  "match": "regex",
                  "regex": "[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
                }
              ]
            },
            "$.number": {
              "combine": "AND",
              "matchers": [
                {
                  "match": "number"
                }
              ]
            }
          }
        },
        "status": 200
      }
    }
  ],
  "metadata": {
    "pact-jvm": {
      "version": "4.3.9"
    },
    "pactSpecification": {
      "version": "3.0.0"
    }
  },
  "provider": {
    "name": "provider-sync"
  }
}

And this is my openApi spec

openapi: 3.0.3
info:
  title: example-api
  description: |
    Example Public API.
  version: 0.3.0-SNAPSHOT
  license:
    name: mylicense
    url: <https://mydomain.com/license>
servers:
  - url: <https://mydomain.com/service>

paths:
  /read/{uuid}:
    get:
      summary: "Read one item"
      operationId: "read"
      parameters:
      - in: path
        name: uuid
        schema:
          type: string
          format: uuid
        required: true
        description: UUIDv4 of the item
      responses:
        "200":
          description: OK
          content:
            application/json:
              schema:
                type: "object"
                oneOf:
                  - $ref: "#/components/schemas/read"
                  - $ref: "#/components/schemas/readDetail"
        "404":
          description: "Item Not Found"
        "403":
          description: "Forbiden Access"
        "401":
          $ref: "#/components/responses/UnauthorizedError"
  
components:
  responses:
    UnauthorizedError:
      description: Access token is missing or invalid
    BadRequestError:
      description: Request parameters invalid
  schemas:
    read:
      required:
        - id
      properties:
        id:
          type: string
          format: uuid
    readDetail:
      required:
        - id
      properties:
        id:
          type: string
          format: uuid
        number:
          type: integer
          format: int32

And this is my swagger-mock-validator response:

Mock file "pacts/consumer-sync-provider-sync.json" is not compatible with spec file "openapitest.yml"
1 error(s)
        response.body.incompatible: 1
0 warning(s)
{
  warnings: [],
  errors: [
    {
      code: 'response.body.incompatible',
      message: 'Response body is incompatible with the response body schema in the spec file: should match exactly one schema in oneOf',
      mockDetails: {
        interactionDescription: 'Read item',
        interactionState: '[none]',
        location: '[root].interactions[0].response.body',
        mockFile: 'pacts/consumer-sync-provider-sync.json',
        value: { id: 'e2490de5-5bd3-43d5-b7c4-526e33f71304', number: 100 }
      },
      source: 'spec-mock-validation',
      specDetails: {
        location: '[root].paths./read/{uuid}.get.responses.200.content.application/json.schema.oneOf',
        pathMethod: 'get',
        pathName: '/read/{uuid}',
        specFile: 'openapitest.yml',
        value: [
          {
            required: [ 'id' ],
            properties: { id: { type: 'string', format: 'uuid' } }
          },
          {
            required: [ 'id' ],
            properties: {
              id: { type: 'string', format: 'uuid' },
              number: { type: 'integer', format: 'int32' }
            }
          }
        ]
      },
      type: 'error'
    }
  ]
}

Error: Mock file "pacts/consumer-sync-provider-sync.json" is not compatible with spec file "openapitest.yml"

My guess is that

format: uuid

is not the same in the validator as in your pact - it's challenging because the openapi spec doesn't define uuid.

I have tried also to remove the uuid and use a number and a string, and happens the same. But if I remove one of the refs in the "oneof" response, the pact passes and it's verified.

definitely

thanks Timothy

No idea, ask in #CLS16AVEE

thanks!