CompressionInputStream inputStream = Mockito
.mock(CompressionInputStream.class);
CompressionOutputStream outputStream = Mockito
.mock(CompressionOutputStream.class);
Mockito.when(codec.createInputStream(Mockito.any(InputStream.class)))
.thenReturn(inputStream);
Mockito.when(codec.createOutputStream(Mockito.any(OutputStream.class)))
.thenReturn(outputStream);
}