final Configuration conf = new Configuration();
final String uri = WebHdfsFileSystem.SCHEME + "://localhost:50070/";
final WebHdfsFileSystem webhdfs = (WebHdfsFileSystem)FileSystem.get(new URI(uri), conf);
OffsetUrlOpener ospy = spy(webhdfs.new OffsetUrlOpener(new URL("http://test/")));
doReturn(new MockHttpURLConnection(ospy.getURL())).when(ospy)
.openConnection();
OffsetUrlOpener rspy = spy(webhdfs.new OffsetUrlOpener((URL) null));
doReturn(new MockHttpURLConnection(rspy.getURL())).when(rspy)
.openConnection();
final OffsetUrlInputStream is = new OffsetUrlInputStream(ospy, rspy);
assertEquals("getPos wrong", 0, is.getPos());