TestHttpResponse.java

package org.robolectric.shadows.httpclient;

import org.apache.http.Header;
import org.apache.http.HeaderIterator;
import org.apache.http.HttpEntity;
import org.apache.http.HttpVersion;
import org.apache.http.ProtocolVersion;
import org.apache.http.StatusLine;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.NoSuchElementException;

public class TestHttpResponse extends HttpResponseStub {

  private int statusCode;
  private byte[] responseBody;
  private TestStatusLine statusLine = new TestStatusLine();
  private TestHttpEntity httpEntity = new TestHttpEntity();
  private int openEntityContentStreamCount = 0;
  private Header[] headers = new Header[0];
  private HttpParams params = new BasicHttpParams();

  public TestHttpResponse() {
    this.statusCode = 200;
    this.responseBody = new byte[0];
  }

  public TestHttpResponse(int statusCode, String responseBody) {
    this.statusCode = statusCode;
    this.responseBody = responseBody.getBytes();
  }

  public TestHttpResponse(int statusCode, String responseBody, Header... headers) {
    this(statusCode, responseBody.getBytes(), headers);
  }

  public TestHttpResponse(int statusCode, byte[] responseBody, Header... headers) {
    this.statusCode = statusCode;
    this.responseBody = responseBody.clone();
    this.headers = headers;
  }

  protected void setResponseBody(String responseBody) {
    this.responseBody = responseBody.getBytes();
  }

  @Override public StatusLine getStatusLine() {
    return statusLine;
  }

  @Override public HttpEntity getEntity() {
    return httpEntity;
  }

  @Override public Header[] getAllHeaders() {
    return headers;
  }

  @Override public Header getFirstHeader(String s) {
    for (Header h : headers) {
      if (s.equalsIgnoreCase(h.getName())) {
        return h;
      }
    }
    return null;
  }

  @Override public Header getLastHeader(String s) {
    for (int i = headers.length -1; i >= 0; i--) {
      if (headers[i].getName().equalsIgnoreCase(s)) {
        return headers[i];
      }
    }
    return null;
  }

  @Override public Header[] getHeaders(String s) {
    List<Header> found = new ArrayList<>();
    for (Header h : headers) {
      if (h.getName().equalsIgnoreCase(s)) found.add(h);
    }
    return found.toArray(new Header[found.size()]);
  }

  @Override
  public void addHeader(Header header) {
    List<Header> temp = new ArrayList<>();
    Collections.addAll(temp, headers);
    temp.add(header);
    headers = temp.toArray(new Header[temp.size()]);
  }

  @Override
  public void setHeader(Header newHeader) {
    for (int i = 0; i < headers.length; i++) {
      Header header = headers[i];
      if (header.getName().equals(newHeader.getName())) {
        headers[i] = newHeader;
        return;
      }
    }
  }

  @Override public HeaderIterator headerIterator() {
    return new HeaderIterator() {
      int index = 0;

      @Override public boolean hasNext() {
        return index < headers.length;
      }

      @Override public Header nextHeader() {
        if (index >= headers.length) throw new NoSuchElementException();
        return headers[index++];
      }

      @Override public Object next() {
        return nextHeader();
      }

      @Override public void remove() {
        throw new UnsupportedOperationException();
      }
    };
  }


  @Override public HeaderIterator headerIterator(final String s) {
    return new HeaderIterator() {
      int index = 0;

      @Override public boolean hasNext() {
        return nextIndex() != -1;
      }

      private int nextIndex() {
        for (int i = index; i<headers.length; i++) {
          if (headers[i].getName().equalsIgnoreCase(s)) {
            return i;
          }
        }
        return -1;
      }

      @Override public Header nextHeader() {
        index = nextIndex();
        if (index == -1) throw new NoSuchElementException();
        return headers[index++];
      }

      @Override public Object next() {
        return nextHeader();
      }

      @Override public void remove() {
        throw new UnsupportedOperationException();
      }
    };
  }

  @Override public boolean containsHeader(String s) {
    return getFirstHeader(s) != null;

  }

  @Override public HttpParams getParams() {
    return params;
  }

  @Override public void setParams(HttpParams httpParams) {
    this.params = httpParams;
  }

  public boolean entityContentStreamsHaveBeenClosed() {
    return openEntityContentStreamCount == 0;
  }

  public class TestHttpEntity extends HttpEntityStub {

    private ByteArrayInputStream inputStream;

    @Override public long getContentLength() {
      return responseBody.length;
    }

    @Override public Header getContentType() {
      return getFirstHeader("Content-Type");
    }

    @Override public Header getContentEncoding() {
      return getFirstHeader("Content-Encoding");
    }

    @Override public boolean isStreaming() {
      return true;
    }

    @Override public boolean isRepeatable() {
      return true;
    }

    @Override public InputStream getContent() throws IOException, IllegalStateException {
      openEntityContentStreamCount++;
      inputStream = new ByteArrayInputStream(responseBody) {
        @Override
        public void close() throws IOException {
          openEntityContentStreamCount--;
          super.close();
        }
      };
      return inputStream;
    }

    @Override public void writeTo(OutputStream outputStream) throws IOException {
      outputStream.write(responseBody);
    }

    @Override public void consumeContent() throws IOException {
    }
  }

  public class TestStatusLine extends StatusLineStub {
    @Override public ProtocolVersion getProtocolVersion() {
      return new HttpVersion(1, 0);
    }

    @Override public int getStatusCode() {
      return statusCode;
    }

    @Override public String getReasonPhrase() {
      return "HTTP status " + statusCode;
    }

    @Override public String toString() {
      return "TestStatusLine[" + getReasonPhrase() + "]";
    }
  }
}