Using wiremock, can I return a body that is dependent on the post request

Question

I am trying to test an openid provider class. The openid consumer class is making an http request. I am mocking the response to this request using wiremock. I am trying to mock

Answer 1

This is possible, you just have to make use of a ResponseTansformer. In the below example code the responseDefinition is determined by the stubbing given below. Here I mock an encoding service by simply returning the body bytes back to the caller. Although in the transformer I am free to return whatever I like based on the contents of the request.

int port = 8080;
WireMockServer wireMockServer = new WireMockServer(new WireMockConfiguration().port(port).extensions(new ResponseTransformer() {
    @Override
    public ResponseDefinition transform(Request request, ResponseDefinition responseDefinition, FileSource files) {
        return new ResponseDefinitionBuilder().like(responseDefinition)
                .withBody(request.getBodyAsString().getBytes())
                .build();
    }

    @Override
    public String name() {
        return "request body returning request transformer";
    }
}));
wireMockServer.start();
WireMock.configureFor("localhost", port);

stubFor(post(urlEqualTo("/encode"))
        .willReturn(aResponse()
                .withHeader("Content-Type", "application/octet-stream")
                .withStatus(200)));

stubFor(post(urlEqualTo("/decode"))
        .willReturn(aResponse()
                .withHeader("Content-Type", "application/octet-stream")
                .withStatus(200)));