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Google HTTP Client Library for Java. Functionality that works on all supported Java platforms, including Java 5 (or higher) desktop (SE) and web (EE), Android, and Google App Engine.

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/*
 * Copyright (c) 2010 Google 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 com.google.api.client.testing.http;

import com.google.api.client.http.HttpContent;
import com.google.api.client.util.Beta;
import com.google.api.client.util.Preconditions;

import java.io.IOException;
import java.io.OutputStream;

/**
 * {@link Beta} 

 * Mock for {@link HttpContent}.
 *
 * 
 * Implementation is not thread-safe.
 * 
 *
 * @author Yaniv Inbar
 * @since 1.3
 */
@Beta
public class MockHttpContent implements HttpContent {

  /** HTTP content length or {@code -1} by default. */
  private long length = -1;

  /** HTTP content type or {@code null} by default. */
  private String type;

  /** HTTP content or an empty byte array by default. */
  private byte[] content = new byte[0];

  public long getLength() throws IOException {
    return length;
  }

  public String getType() {
    return type;
  }

  public void writeTo(OutputStream out) throws IOException {
    out.write(content);
    out.flush();
  }

  public boolean retrySupported() {
    return true;
  }

  /**
   * Returns the HTTP content.
   *
   * @since 1.5
   */
  public final byte[] getContent() {
    return content;
  }

  /**
   * Sets the HTTP content.
   *
   * 
   * Default value is an empty byte array.
   * 
   *
   * @since 1.5
   */
  public MockHttpContent setContent(byte[] content) {
    this.content = Preconditions.checkNotNull(content);
    return this;
  }

  /**
   * Returns the HTTP content length or {@code -1} for unknown.
   *
   * 
   * Default value is {@code -1}.
   * 
   *
   * @since 1.5
   */
  public MockHttpContent setLength(long length) {
    Preconditions.checkArgument(length >= -1);
    this.length = length;
    return this;
  }

  /**
   * Sets the HTTP content type or {@code null} for none.
   *
   * @since 1.5
   */
  public MockHttpContent setType(String type) {
    this.type = type;
    return this;
  }
}