ResponseEncoderTest.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * 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 org.kaaproject.kaa.server.transports.http.transport.netty;

import static org.mockito.Matchers.any;
import static org.mockito.Mockito.RETURNS_DEEP_STUBS;
import static org.mockito.Mockito.isA;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.util.Attribute;

import org.junit.Before;
import org.junit.Test;
import org.kaaproject.kaa.server.common.server.AbstractNettyServer;

public class ResponseEncoderTest {
  public static final String CONNECTION = "close";
  private ResponseEncoder responseEncoder = new ResponseEncoder();
  private ChannelHandlerContext channelHandlerContext = mock(ChannelHandlerContext.class);
  private AbstractCommand abstractCommand = mock(AbstractCommand.class);
  private ChannelPromise promise = mock(ChannelPromise.class);
  private HttpResponse response = mock(HttpResponse.class, RETURNS_DEEP_STUBS);
  private ChannelFuture future = mock(ChannelFuture.class);

  @SuppressWarnings("unchecked")
  @Before
  public void before() {
    Channel channel = mock(Channel.class);
    Attribute attribute = mock(Attribute.class);
    when(response.getProtocolVersion()).thenReturn(new HttpVersion("HTTP/1.1", true));
    when(channelHandlerContext.channel()).thenReturn(channel);
    when(channelHandlerContext.writeAndFlush(any(Object.class))).thenReturn(future);
    when(channel.attr(AbstractNettyServer.UUID_KEY)).thenReturn(attribute);
    when(abstractCommand.getResponse()).thenReturn(response);
  }

  @Test
  public void validHttpResponseWriteTest() throws Exception {
    when(response.headers().get(isA(CharSequence.class))).thenReturn(null);
    responseEncoder.write(channelHandlerContext, abstractCommand, promise);
    verify(channelHandlerContext).writeAndFlush(response, promise);
    verify(future, never()).addListener(ChannelFutureListener.CLOSE);
  }

  @Test
  public void validHttpResponseAddListenerTest() throws Exception {
    when(response.headers().get(isA(CharSequence.class))).thenReturn(CONNECTION);
    when(channelHandlerContext.writeAndFlush(response, promise)).thenReturn(future);
    responseEncoder.write(channelHandlerContext, abstractCommand, promise);
    verify(channelHandlerContext).writeAndFlush(response, promise);
    verify(future).addListener(ChannelFutureListener.CLOSE);
  }

  @Test
  public void invalidHttpResponseWriteTest() throws Exception {
    responseEncoder.write(channelHandlerContext, new Object(), promise);
    verify(channelHandlerContext, never()).writeAndFlush(response, promise);
  }
}