### Question:
AlosAV2Metadata extends XmlMetadata { @Override public String[] getRasterFileNames() { String path = getAttributeValue(AlosAV2Constants.PATH_IMG_DATA_FILE_PATH, null); return (path != null ? new String[]{path.toLowerCase()} : null); } AlosAV2Metadata(String name); @Override String getFileName(); @Override String getProductName(); @Override String getProductDescription(); @Override String getFormatName(); @Override String getMetadataProfile(); @Override int getRasterWidth(); @Override int getRasterHeight(); @Override String[] getRasterFileNames(); @Override ProductData.UTC getProductStartTime(); @Override ProductData.UTC getProductEndTime(); String[] getBandNames(); Map<String, String> getBandUnits(); @Override int getNumBands(); int getNoDataValue(); Color getNoDataColor(); int getSaturatedPixelValue(); Color getSaturatedColor(); ProductData.UTC getCenterTime(); float getGain(final String bandName); float getBias(final String bandName); String getProcessingLevel(); InsertionPoint[] getGeopositionPoints(); int getPixelDataType();  }### Answer:
@Test public void testGetRasterFileNames() throws Exception { String[] fileNames = metadata.getRasterFileNames(); assertNotNull(fileNames); assertEquals(fileNames.length, 1); assertEquals("al01_av2_obs_1c_20080715t181736_20080715t181748_esr_013182_3985.gtif", fileNames[0]); }