When loading expectations from OpenAPI spec, for every operation mockserver only creates 1 expectation, even if there are different responses/code configured

[kapoorrohit]

Describe the issue
Open API spec has responses like 200, 401, 500. But when I create expectations from this Open API, it only returns first response for every operation.

MockServer version
5.15.0

1. How you are running MockServer (i.e maven plugin, docker, etc) -> Java Client
2. Code you used to create expectations -> Expectation[] test = mockServer.upsert(
   openAPIExpectation(
   "file:/Users/..../openapi.yaml"
   )
   );
3. What error you saw -> Only first response returned for each operation

Expected behaviour
All responses to be returned

[sann3]

Any update on this ?

[IvanZhivkov-sumup]

A single request can return only one response. So All response to be returned is not applicable.
The mock server documentation states:
if multiple response bodies are specified for an operation (i.e. different status codes) the first response body is used by default, however this can be controlled by using operationsAndResponses - link

Using operationsAndResponses you can create an expectation to return a specific response. This way you could create multiple expectations each with a different response. However each request will still get only one response, so you still have to figure out what you want to achieve.

[aswini1988]

I have a similar scenario where I use the OpenAPI Specification to create mocks.
https://www.mock-server.com/mock_server/using_openapi.html.
Using the operationsAndResponses argument I am creating two mocks for the same operation ID but for different status codes for example operation-id is getPetByID and the status code is 200 & 400. But when I hit the endpoint to get the response from Mockserver for the 200 status code it returns a response either from 400 or 200 which is matched first.
My question is how should I create mock data for these two status codes for a single operation ID so that Mockserver can return response 200 when the request is valid and 400 when the request is invalid.

var mockServerClient = require('mockserver-client').mockServerClient;
mockServerClient("localhost", 1080).openAPIExpectation({
"specUrlOrPayload": "https://raw.githubusercontent.com/mock-server/mockserver/master/mockserver-integration-testing/src/main/resources/org/mockserver/openapi/openapi_petstore_example.json",
"operationsAndResponses": {
"showPetById": "200"
}
}).then(
function () {
console.log("expectation created");
},
function (error) {
console.log(error);
}
);

mockServerClient("localhost", 1080).openAPIExpectation({
"specUrlOrPayload": "https://raw.githubusercontent.com/mock-server/mockserver/master/mockserver-integration-testing/src/main/resources/org/mockserver/openapi/openapi_petstore_example.json",
"operationsAndResponses": {
"showPetById": "400"
}
}).then(
function () {
console.log("expectation created");
},
function (error) {
console.log(error);
}
);