private void checkException(String name, OrekitMessages message) {
Utils.setDataRoot("USNO");
TimeScalesFactory.addUTCTAIOffsetsLoader(new TAIUTCDatFilesLoader(name));
try {
TimeScalesFactory.getUTC();
Assert.fail("an exception should have been thrown");
} catch (OrekitException oe) {
Assert.assertEquals(message, oe.getSpecifier());
}
}
@Test
public void testModifiedLinearData() throws OrekitException {
Utils.setDataRoot("USNO");
TimeScalesFactory.addUTCTAIOffsetsLoader(
new TAIUTCDatFilesLoader("tai-utc-modified-linear.dat"));
// linear models between 1961 and 1972
checkOffset(1961, 1, 2, -(1.4000000 + 1 * 0.001000)); // MJD 37300 + 1
checkOffset(1961, 8, 2, -(1.5000000 + 213 * 0.001100)); // MJD 37300 + 213
checkOffset(1962, 1, 2, -(1.6000000 + 1 * 0.001200)); // MJD 37665 + 1
checkOffset(1963, 11, 2, -(1.7000000 + 670 * 0.001300)); // MJD 37665 + 670
checkOffset(1964, 1, 2, -(1.8000000 - 365 * 0.001400)); // MJD 38761 - 365
checkOffset(1964, 4, 2, -(1.9000000 - 274 * 0.001500)); // MJD 38761 - 274
checkOffset(1964, 9, 2, -(2.0000000 - 121 * 0.001600)); // MJD 38761 - 121
checkOffset(1965, 1, 2, -(2.1000000 + 1 * 0.001700)); // MJD 38761 + 1
checkOffset(1965, 3, 2, -(2.2000000 + 60 * 0.001800)); // MJD 38761 + 60
checkOffset(1965, 7, 2, -(2.3000000 + 182 * 0.001900)); // MJD 38761 + 182
checkOffset(1965, 9, 2, -(2.4000000 + 244 * 0.002000)); // MJD 38761 + 244
checkOffset(1966, 1, 2, -(2.5000000 + 1 * 0.002100)); // MJD 39126 + 1
checkOffset(1968, 2, 2, -(2.6000000 + 762 * 0.002200)); // MJD 39126 + 762
// last linear drift is not stopped as we miss the first constant offset in 1972
checkOffset(1972, 3, 5, -(2.6000000 + 2255 * 0.002200)); // MJD 39126 + 2255
checkOffset(1972, 7, 14, -(2.6000000 + 2386 * 0.002200)); // MJD 39126 + 2386
checkOffset(1979, 12, 31, -(2.6000000 + 5112 * 0.002200)); // MJD 39126 + 5112
checkOffset(1980, 1, 22, -(2.6000000 + 5134 * 0.002200)); // MJD 39126 + 5134
checkOffset(2006, 7, 7, -(2.6000000 + 14797 * 0.002200)); // MJD 39126 + 14797
checkOffset(2010, 7, 7, -(2.6000000 + 16258 * 0.002200)); // MJD 39126 + 16258
checkOffset(2012, 7, 7, -(2.6000000 + 16989 * 0.002200)); // MJD 39126 + 16989
checkOffset(2015, 7, 7, -(2.6000000 + 18084 * 0.002200)); // MJD 39126 + 18084
}
@Test
public void testOnlyPre1972Data() throws OrekitException {
Utils.setDataRoot("USNO");
TimeScalesFactory.addUTCTAIOffsetsLoader(
new TAIUTCDatFilesLoader("tai-utc-only-pre-1972-data.dat"));
// linear models between 1961 and 1972
checkOffset(1961, 1, 2, -(1.422818 + 1 * 0.001296)); // MJD 37300 + 1
checkOffset(1961, 8, 2, -(1.372818 + 213 * 0.001296)); // MJD 37300 + 213
checkOffset(1962, 1, 2, -(1.845858 + 1 * 0.0011232)); // MJD 37665 + 1
checkOffset(1963, 11, 2, -(1.945858 + 670 * 0.0011232)); // MJD 37665 + 670
checkOffset(1964, 1, 2, -(3.240130 - 365 * 0.001296)); // MJD 38761 - 365
checkOffset(1964, 4, 2, -(3.340130 - 274 * 0.001296)); // MJD 38761 - 274
checkOffset(1964, 9, 2, -(3.440130 - 121 * 0.001296)); // MJD 38761 - 121
checkOffset(1965, 1, 2, -(3.540130 + 1 * 0.001296)); // MJD 38761 + 1
checkOffset(1965, 3, 2, -(3.640130 + 60 * 0.001296)); // MJD 38761 + 60
checkOffset(1965, 7, 2, -(3.740130 + 182 * 0.001296)); // MJD 38761 + 182
checkOffset(1965, 9, 2, -(3.840130 + 244 * 0.001296)); // MJD 38761 + 244
checkOffset(1966, 1, 2, -(4.313170 + 1 * 0.002592)); // MJD 39126 + 1
checkOffset(1968, 2, 2, -(4.213170 + 762 * 0.002592)); // MJD 39126 + 762
// last linear drift is not stopped as we miss the first constant offset in 1972
checkOffset(1972, 3, 5, -(4.213170 + 2255 * 0.002592)); // MJD 39126 + 2255
checkOffset(1972, 7, 14, -(4.213170 + 2386 * 0.002592)); // MJD 39126 + 2386
checkOffset(1979, 12, 31, -(4.213170 + 5112 * 0.002592)); // MJD 39126 + 5112
checkOffset(1980, 1, 22, -(4.213170 + 5134 * 0.002592)); // MJD 39126 + 5134
checkOffset(2006, 7, 7, -(4.213170 + 14797 * 0.002592)); // MJD 39126 + 14797
checkOffset(2010, 7, 7, -(4.213170 + 16258 * 0.002592)); // MJD 39126 + 16258
checkOffset(2012, 7, 7, -(4.213170 + 16989 * 0.002592)); // MJD 39126 + 16989
checkOffset(2015, 7, 7, -(4.213170 + 18084 * 0.002592)); // MJD 39126 + 18084
}
@Deprecated
@Test
public void testDeprecatedAPI() throws OrekitException {
Utils.setDataRoot("USNO");
TimeScalesFactory.addUTCTAILoader(
new UTCTAILoader() {
@Override
public boolean stillAcceptsData() {
return false;
}
@Override
public void loadData(InputStream input, String name) {}
@Override
public SortedMap<DateComponents, Integer> loadTimeSteps() {
SortedMap<DateComponents, Integer> map = new TreeMap<DateComponents, Integer>();
map.put(new DateComponents(1972, 1, 1), 10);
map.put(new DateComponents(1972, 7, 1), 11);
return map;
}
@Override
public String getSupportedNames() {
return "non-existant-name";
}
});
checkOffset(1972, 1, 2, -10.0);
checkOffset(1972, 6, 30, -10.0);
checkOffset(1972, 7, 2, -11.0);
checkOffset(3000, 1, 1, -11.0);
}
private void checkOffset(int year, int month, int day, double offset) throws OrekitException {
TimeScale utc = TimeScalesFactory.getUTC();
AbsoluteDate date = new AbsoluteDate(year, month, day, utc);
Assert.assertEquals(offset, utc.offsetFromTAI(date), 1.0e-10);
}
