/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource All rights reserved.
*
* 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 br.com.caelum.vraptor.observer.download;
import static org.junit.Assert.assertArrayEquals;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;
import javax.servlet.http.HttpServletResponse;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import br.com.caelum.vraptor.observer.download.InputStreamDownload;
public class InputStreamDownloadTest {
@Rule
public ExpectedException thrown = ExpectedException.none();
private InputStream inputStream;
private byte[] bytes;
private @Mock HttpServletResponse response;
private ServletOutputStream socketStream;
private ByteArrayOutputStream outputStream;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
bytes = new byte[] { (byte) 0x0 };
inputStream = new ByteArrayInputStream(bytes);
outputStream = new ByteArrayOutputStream();
socketStream = new ServletOutputStream() {
@Override
public void write(int b) throws IOException {
outputStream.write(b);
}
@Override
public boolean isReady() {
return false;
}
@Override
public void setWriteListener(WriteListener writeListener) {
}
};
when(response.getOutputStream()).thenReturn(socketStream);
}
@Test
public void shouldFlushWholeStreamToHttpResponse() throws IOException {
InputStreamDownload fd = new InputStreamDownload(inputStream, "type", "x.txt");
fd.write(response);
assertArrayEquals(bytes, outputStream.toByteArray());
}
@Test
public void shouldUseHeadersToHttpResponse() throws IOException {
InputStreamDownload fd = new InputStreamDownload(inputStream, "type", "x.txt");
fd.write(response);
verify(response).setHeader("Content-type", "type");
assertArrayEquals(bytes, outputStream.toByteArray());
}
@Test
public void builderShouldThrowsExceptionIfInputStreamIsNull() throws Exception {
thrown.expect(NullPointerException.class);
DownloadBuilder.of((InputStream) null).build();
}
@Test
public void testConstructWithDownloadBuilder() throws Exception {
Download fd = DownloadBuilder.of(inputStream).withFileName("file.txt")
.withSize(bytes.length)
.withContentType("text/plain").downloadable().build();
fd.write(response);
verify(response).setHeader("Content-Length", String.valueOf(bytes.length));
verify(response).setHeader("Content-disposition", "attachment; filename=file.txt");
}
}