import com.github.tomakehurst.wiremock.extension.ResponseTransformer;
import com.github.tomakehurst.wiremock.http.Request;
import com.github.tomakehurst.wiremock.http.Response;

import java.util.Random;

public class CustomResponseTransformer implements ResponseTransformer {

    @Override
    public Response transform(Request request, Response response, com.github.tomakehurst.wiremock.stubbing.ServeEvent serveEvent) {
        int randomNumber = new Random().nextInt(100) + 1; // Genera un número aleatorio entre 1 y 100

        int statusCode;
        if (randomNumber <= 50) {
            statusCode = 200; // 50% de las respuestas son correctas (código 200)
        } else if (randomNumber <= 75) {
            statusCode = 404; // 25% de las respuestas son errores 404
        } else {
            statusCode = 501; // 25% de las respuestas son errores 501
        }

        return Response.Builder.like(response)
                .but().status(statusCode)
                .build();
    }

    @Override
    public String getName() {
        return "custom-response-transformer";
    }
}

{
  "mappings": [
    {
      "request": {
        "urlPathPattern": "/third-party/employee/employee-organizational-unit/.*"
      },
      "response": {
        "proxyBaseUrl": "<https://testing.pre.testing.com>",
        "transformers": [
          "custom-response-transformer"
        ]
      }
    }
  ]
}

public static class StatusResponseTransformer implements ResponseTransformerV2 {

    @Override
    public Response transform(Response response, ServeEvent serveEvent) {
      return Response.Builder.like(response).but().status(500).build();
    }

    @Override
    public String getName() {
      return "status-transformer";
    }
  }

@Test
  public void transformsStatusResponse() {
    startWithExtensions(StatusResponseTransformer.class);

    wm.stubFor(
            get(urlEqualTo("/response-transform")).willReturn(WireMock.ok()));

    assertThat(client.get("/response-transform").statusCode(), is(500));
  }

ResponseTransformerV2