FormsAppTest.java

package com.example.forms;

import io.dropwizard.Configuration;
import io.dropwizard.client.JerseyClientBuilder;
import io.dropwizard.client.JerseyClientConfiguration;
import io.dropwizard.jersey.errors.ErrorMessage;
import io.dropwizard.testing.ResourceHelpers;
import io.dropwizard.testing.junit.DropwizardAppRule;
import io.dropwizard.util.Duration;
import org.glassfish.jersey.media.multipart.FormDataBodyPart;
import org.glassfish.jersey.media.multipart.FormDataContentDisposition;
import org.glassfish.jersey.media.multipart.FormDataMultiPart;
import org.glassfish.jersey.media.multipart.MultiPart;
import org.glassfish.jersey.media.multipart.MultiPartFeature;
import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Test;

import javax.ws.rs.client.Client;
import javax.ws.rs.client.Entity;
import javax.ws.rs.core.Response;

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

public class FormsAppTest {
    @ClassRule
    public static final DropwizardAppRule<Configuration> RULE =
        new DropwizardAppRule<>(FormsApp.class, ResourceHelpers.resourceFilePath("app1/config.yml"));

    private final JerseyClientConfiguration config = new JerseyClientConfiguration();

    @Before
    public void setUp() throws Exception {
        config.setTimeout(Duration.seconds(2));
    }

    @Test
    public void canSubmitFormAndReceiveResponse() {
        config.setChunkedEncodingEnabled(false);

        final Client client = new JerseyClientBuilder(RULE.getEnvironment())
            .using(config)
            .build("test client 1");

        final MultiPart mp = new FormDataMultiPart()
            .bodyPart(new FormDataBodyPart(
                FormDataContentDisposition.name("file").fileName("fileName").build(), "CONTENT"));

        final String url = String.format("http://localhost:%d/uploadFile", RULE.getLocalPort());
        final String response = client.target(url).register(MultiPartFeature.class).request()
            .post(Entity.entity(mp, mp.getMediaType()), String.class);
        assertThat(response).isEqualTo("fileName:\nCONTENT");
    }

    /** Test confirms that chunked encoding has to be disabled in order for sending forms to work.
     *  Maybe someday this requirement will be relaxed and this test can be updated for the new
     *  behavior. For more info, see issues #1013 and #1094 */
    @Test
    public void failOnNoChunkedEncoding() {
        final Client client = new JerseyClientBuilder(RULE.getEnvironment())
            .using(config)
            .build("test client 2");

        final MultiPart mp = new FormDataMultiPart()
            .bodyPart(new FormDataBodyPart(
                FormDataContentDisposition.name("file").fileName("fileName").build(), "CONTENT"));

        final String url = String.format("http://localhost:%d/uploadFile", RULE.getLocalPort());
        final Response response = client.target(url).register(MultiPartFeature.class).request()
            .post(Entity.entity(mp, mp.getMediaType()));
        assertThat(response.getStatus()).isEqualTo(400);
        assertThat(response.readEntity(ErrorMessage.class))
            .isEqualTo(new ErrorMessage(400, "HTTP 400 Bad Request"));
    }
}