/*
 * Copyright © 2012 The Feign Authors (feign@commonhaus.dev)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package feign;

import static org.assertj.core.api.Assertions.assertThat;

import feign.Request.Options;
import java.io.IOException;
import java.util.Arrays;
import org.junit.jupiter.api.Test;

class CapabilityTest {

  private class AClient implements Client {

    public AClient(Client client) {
      if (!(client instanceof Client.Default)) {
        throw new RuntimeException(
            "Test is chaining invokations, expected Default Client instace here");
      }
    }

    @Override
    public Response execute(Request request, Options options) throws IOException {
      return null;
    }
  }

  private class BClient implements Client {

    public BClient(Client client) {
      if (!(client instanceof AClient)) {
        throw new RuntimeException("Test is chaining invokations, expected AClient instace here");
      }
    }

    @Override
    public Response execute(Request request, Options options) throws IOException {
      return null;
    }
  }

  @Test
  void enrichClient() {
    Client enriched =
        (Client)
            Capability.enrich(
                new Client.Default(null, null),
                Client.class,
                Arrays.asList(
                    new Capability() {
                      @Override
                      public Client enrich(Client client) {
                        return new AClient(client);
                      }
                    },
                    new Capability() {
                      @Override
                      public Client enrich(Client client) {
                        return new BClient(client);
                      }
                    }));

    assertThat(enriched).isInstanceOf(BClient.class);
  }
}