StreamTest.java

/**
 * Copyright (C) 2013-2015 all@code-story.net
 *
 * 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 net.codestory.http.payload;

import net.codestory.http.testhelpers.AbstractProdWebServerTest;
import org.junit.Test;

import java.io.ByteArrayInputStream;

import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.Arrays.asList;
import static java.util.stream.IntStream.range;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

public class StreamTest extends AbstractProdWebServerTest {
  @Test
  public void server_sent_events() {
    configure(routes -> routes
        .get("/events", () -> range(1, 1000).mapToObj(i -> "MESSAGE" + i))
    );

    get("/events").should().contain("data: MESSAGE1\n\n" + "data: MESSAGE2\n\n" + "data: MESSAGE3\n\n");
  }

  @Test
  public void close_server_sent_events_at_the_end() {
    Runnable closeAction = mock(Runnable.class);

    configure(routes -> routes
        .get("/events", asList("MESSAGE1", "MESSAGE2").stream().onClose(closeAction))
    );

    get("/events").should().contain("data: MESSAGE1\n\n" + "data: MESSAGE2\n\n");
    verify(closeAction).run();
  }

  @Test
  public void server_sent_events_multiline() {
    configure(routes -> routes
        .get("/events", () -> range(1, 1000).mapToObj(i -> "MESSAGE\n" + i))
    );

    get("/events").should().contain("data: MESSAGE\ndata: 1\n\n" + "data: MESSAGE\ndata: 2\n\n" + "data: MESSAGE\ndata: 3\n\n");
  }

  @Test
  public void byte_stream() {
    configure(routes -> routes
        .get("/stream", () -> new ByteArrayInputStream("Hello World".getBytes(UTF_8)))
    );

    get("/stream").should().contain("Hello World");
  }

  @Test
  public void streaming_output() {
    configure(routes -> routes
        .get("/stream", () -> (StreamingOutput) output -> output.write("Hello World".getBytes(UTF_8)))
    );

    get("/stream").should().contain("Hello World");
  }
}