@Test
 public void testSourceWithFileUpload() throws Exception {
   Assume.assumeTrue(Network.isAppAlive());
   String id = UUID.randomUUID().toString();
   Source source = makeSource(id);
   Path tempFile = Files.createTempFile("soda_upload_test", ".txt");
   byte[] content = "Test file content".getBytes();
   Files.write(tempFile, content);
   File file = tempFile.toFile();
   addFileLink(source, file);
   client.put(source, file);
   InputStream is = client.getExternalDocument(id, file.getName());
   byte[] contentFromServer = new byte[content.length];
   is.read(contentFromServer);
   is.close();
   Assert.assertArrayEquals(content, contentFromServer);
 }
 @Test(expected = DataStoreException.class)
 public void testNoFile() throws Exception {
   Assume.assumeTrue(Network.isAppAlive());
   client.getExternalDocument(UUID.randomUUID().toString(), "no_such_file.txt");
 }