@Test public void write_json_by_default() throws Exception { TestRequest request = new TestRequest(); DumbResponse response = new DumbResponse(); Issues.Issue msg = Issues.Issue.newBuilder().setKey("I1").build(); WsUtils.writeProtobuf(msg, request, response); assertThat(response.stream().mediaType()).isEqualTo(MediaTypes.JSON); assertThat(response.outputAsString()).startsWith("{").contains("\"key\":\"I1\"").endsWith("}"); }