/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
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package ucar.nc2.ncml;
import junit.framework.TestCase;
import org.junit.experimental.categories.Category;
import ucar.ma2.Array;
import ucar.ma2.DataType;
import ucar.ma2.InvalidRangeException;
import ucar.nc2.NCdumpW;
import ucar.nc2.NetcdfFile;
import ucar.nc2.Variable;
import ucar.nc2.dataset.NetcdfDataset;
import ucar.nc2.util.Misc;
import ucar.unidata.util.test.category.NeedsCdmUnitTest;
import ucar.unidata.util.test.TestDir;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;
/**
* Test aggregation where timeUnitsChange='true'
*
* @author caron
*/
@Category(NeedsCdmUnitTest.class)
public class TestOffAggExistingTimeUnitsChange extends TestCase {
public TestOffAggExistingTimeUnitsChange( String name) {
super(name);
}
//String location = "file:R:/testdata2/ncml/nc/narr/narr.ncml";
public void testNamExtract() throws IOException, InvalidRangeException {
String location = TestDir.cdmUnitTestDir + "ncml/nc/namExtract/test_agg.ncml";
System.out.println(" TestOffAggExistingTimeUnitsChange.open "+ location);
NetcdfFile ncfile = NetcdfDataset.openFile(location, null);
Variable v = ncfile.findVariable("time");
assert v != null;
assert v.getDataType() == DataType.DOUBLE;
String units = v.getUnitsString();
assert units != null;
assert units.equals("hours since 2006-09-25T06:00:00Z");
int count = 0;
Array data = v.read();
NCdumpW.printArray(data, "time", new PrintWriter(System.out), null);
while (data.hasNext()) {
assert Misc.closeEnough(data.nextInt(), (count + 1) * 3);
count++;
}
ncfile.close();
}
public void testNarrGrib() throws IOException, InvalidRangeException {
String ncml =
"<?xml version='1.0' encoding='UTF-8'?>\n" +
"<netcdf xmlns='http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2'>\n" +
" <aggregation type='joinExisting' dimName='time' timeUnitsChange='true' >\n" +
" <netcdf location='narr-a_221_20070411_0000_000.grb'/>\n" +
" <netcdf location='narr-a_221_20070411_0300_000.grb'/>\n" +
" <netcdf location='narr-a_221_20070411_0600_000.grb'/>\n" +
" </aggregation>\n" +
"</netcdf>";
String location = "file:"+ TestDir.cdmUnitTestDir + "ncml/nc/narr/";
System.out.printf(" TestOffAggExistingTimeUnitsChange.testNarrGrib=%s%n%s", location, ncml);
NetcdfFile ncfile = NcMLReader.readNcML(new StringReader(ncml), location, null);
Variable v = ncfile.findVariable("time");
assert v != null;
assert v.getDataType() == DataType.DOUBLE;
String units = v.getUnitsString();
assert units != null;
assert units.equalsIgnoreCase("Hour since 2007-04-11T00:00:00Z") : units; // Hour since 2007-04-11T00:00:00.000Z
int count = 0;
Array data = v.read();
NCdumpW.printArray(data, "time", new PrintWriter(System.out), null);
while (data.hasNext()) {
assert data.nextInt() == count * 3;
count++;
}
ncfile.close();
}
}