### Question:
KCDLoader implements DescriptionLoader { @Override public String[] getSupportedExtensions() { return new String[] { "kcd", "kcd.gz" }; } KCDLoader(); @Override Document parseFile(File file); @Override String[] getSupportedExtensions();  }### Answer:
@Test public void testGetSupportedExtensions() { System.out.println("getSupportedExtensions"); String[] expResult = new String[]{"kcd", "kcd.gz"}; String[] result = loader.getSupportedExtensions(); assertEquals(2, result.length); assertEquals(expResult[0], result[0]); assertEquals(expResult[1], result[1]); }