ok-testing-reloaded-medium

RetweetsIdRoute.java

public class RetweetsIdRoute implements Route {

  @Override
  public Object handle(Request request, Response response) throws Exception {
    final String idParam = request.params(":id");
    final String count = request.queryParams("count");

    final List<Tweet> tweetList = fetchTweets(
      Long.valueOf(idParam),
      Integer.valueOf(count != null && count.length() > 0 ? count : "100")
    );

    final Moshi moshi = new Moshi.Builder()
        .add(Date.class, new DateJsonAdapter("EEE MMM dd kk:mm:ss z yyyy").nullSafe())
        .build();

    response.header("Content-Type", "application/json");

    return moshi.adapter(List.class).nullSafe().toJson(tweetList);
  }

  private List<Tweet> fetchTweets(long id, int count) {
    final List<Tweet> tweets = new ArrayList<Tweet>(count);
    for (int i = 0; i < count; i++) {
      final Tweet tweet = new Tweet();
      tweet.id = id + i;
      tweet.text = String.format("Retweet #%s of %s for %s", i, count, id);
      tweet.favorited = i % 2 == 0;

      tweets.add(tweet);
    }

    return tweets;
  }

  public static Route create() {
    return new RetweetsIdRoute();
  }
}

TwitterApp.java

public class TwitterApp implements SparkApplication {

  @Override
  public void init() {

    get("statuses/retweets/:id", RetweetsIdRoute.create());
  }
}

TwitterAppTest.java

@RunWith(SparkRunner.class)
@SparkApplicationTest(value = TwitterApp.class, port = 4444)
public class TwitterAppTest {

  @Test
  public void test() throws IOException {
    final OkHttpClient okHttpClient = new OkHttpClient.Builder().build();

    final Request request = new Request.Builder()
      .get()
      .url("http://localhost:4444/statuses/retweets/123")
      .build();

    final Response response = okHttpClient.newCall(request).execute();

    assertThat(response.body().string()).startsWith("[{\"favorited\":true,\"id\":123");
  }
}