### Question:
MetopReader extends AvhrrReader implements AvhrrConstants { static boolean isChannel3a(int frameIndicator) { return (frameIndicator & 1) == 1; } MetopReader(ProductReaderPlugIn metopReaderPlugIn);   }### Answer:
@Test public void testIsChannel3a() { assertTrue(MetopReader.isChannel3a(1)); assertTrue(MetopReader.isChannel3a(17)); assertFalse(MetopReader.isChannel3a(2)); assertFalse(MetopReader.isChannel3a(128)); }