### Question:
GzipCompressionProvider implements ICompressionProvider { @Override public GzipCompressionInputStream createInputStream( InputStream in ) throws IOException { return new GzipCompressionInputStream( in, this ); }  @Override GzipCompressionInputStream createInputStream( InputStream in ); @Override boolean supportsInput(); @Override GzipCompressionOutputStream createOutputStream( OutputStream out ); @Override boolean supportsOutput(); @Override String getDescription(); @Override String getName(); @Override String getDefaultExtension();  }### Answer:
@Test public void testCreateInputStream() throws IOException { GzipCompressionProvider provider = (GzipCompressionProvider) factory.getCompressionProviderByName( PROVIDER_NAME ); ByteArrayOutputStream baos = new ByteArrayOutputStream(); GZIPOutputStream gos = new GZIPOutputStream( baos ); byte[] testBytes = "Test".getBytes(); gos.write( testBytes ); ByteArrayInputStream in = new ByteArrayInputStream( baos.toByteArray() ); GZIPInputStream gis = new GZIPInputStream( in ); in = new ByteArrayInputStream( baos.toByteArray() ); GzipCompressionInputStream ncis = provider.createInputStream( in ); assertNotNull( ncis ); GzipCompressionInputStream ncis2 = provider.createInputStream( gis ); assertNotNull( ncis2 ); }