Class Issue63Test

form/src/test/java/feign/form/issues/Issue63Test.java:32–68

// https://github.com/OpenFeign/feign-form/issues/63
class Issue63Test {

  @Test
  void test() {
    try (var server = UndertowServer.builder().callback(this::handleRequest).start()) {
      var client =
          Feign.builder()
              .encoder(new FormEncoder(new JacksonEncoder()))
              .target(Client.class, server.getConnectUrl());

      var data = new HashMap<String, String>();
      data.put("from", "+987654321");
      data.put("to", "+123456789");
      data.put("body", "hello world");

      assertThat(client.map(data)).isEqualTo("ok");
    }
  }

  private void handleRequest(HttpServerExchange exchange, byte[] message) {
    // assert request
    assertThat(exchange.getRequestHeaders().getFirst(io.undertow.util.Headers.CONTENT_TYPE))
        .isEqualTo("application/x-www-form-urlencoded; charset=UTF-8");
    assertThat(message).asString().isEqualTo("from=%2B987654321&to=%2B123456789&body=hello+world");

    // build response
    exchange.getResponseHeaders().put(io.undertow.util.Headers.CONTENT_TYPE, "text/plain");
    exchange.getResponseSender().send("ok");
  }

  interface Client {

    @RequestLine("POST")
    @Headers("Content-Type: application/x-www-form-urlencoded; charset=utf-8")
    String map(Map<String, String> data);
  }
}