public void test_convertToUtc_TaiInstant_justAfterLeap() {
TaiInstant tai =
TaiInstant.ofTaiSeconds(TAI_SECS_UTC1980, 0); // 1980-01-01 (19 leap secs added)
UtcInstant expected = UtcInstant.ofModifiedJulianDay(MJD_1980, 0);
assertEquals(rules.convertToUtc(tai), expected);
assertEquals(rules.convertToTai(expected), tai); // check reverse
}
public void test_convertToInstant_furtherAfterLeap() {
OffsetDateTime odt = OffsetDateTime.of(1980, 1, 1, 0, 0, 1, 0, ZoneOffset.UTC);
Instant instant = odt.toInstant();
UtcInstant utc = UtcInstant.ofModifiedJulianDay(MJD_1980, NANOS_PER_SEC);
assertEquals(rules.convertToInstant(utc), instant);
assertEquals(rules.convertToUtc(instant), utc);
}
public void test_negativeLeap_justAfterLeap() {
rules.register(MJD_2100 - 1, -1);
TaiInstant tai = TaiInstant.ofTaiSeconds(TAI_SECS_UTC2100_EXTRA_NEGATIVE_LEAP, 0); // 2100-01-01
UtcInstant expected = UtcInstant.ofModifiedJulianDay(MJD_2100, 0);
assertEquals(rules.convertToUtc(tai), expected);
assertEquals(rules.convertToTai(expected), tai); // check reverse
}
// -----------------------------------------------------------------------
// convertToUtc(Instant)/convertToInstant(UtcInstant)
// -----------------------------------------------------------------------
public void test_convertToInstant_justBeforeLeap() {
OffsetDateTime odt = OffsetDateTime.of(1979, 12, 31, 23, 43, 21, 0, ZoneOffset.UTC);
Instant instant = odt.toInstant();
UtcInstant utc =
UtcInstant.ofModifiedJulianDay(MJD_1980 - 1, (SECS_PER_DAY + 1 - 1000) * NANOS_PER_SEC);
assertEquals(rules.convertToInstant(utc), instant);
assertEquals(rules.convertToUtc(instant), utc);
}
public void test_convertToUtc_TaiInstant_justBeforeLeap() {
TaiInstant tai =
TaiInstant.ofTaiSeconds(TAI_SECS_UTC1980 - 2, 0); // 1980-01-01 (2 seconds before 1980)
UtcInstant expected =
UtcInstant.ofModifiedJulianDay(MJD_1980 - 1, (SECS_PER_DAY - 1) * NANOS_PER_SEC);
assertEquals(rules.convertToUtc(tai), expected);
assertEquals(rules.convertToTai(expected), tai); // check reverse
}
public void test_convertToUtc_TaiInstant_startUtcPeriod() {
TaiInstant tai =
TaiInstant.ofTaiSeconds(TAI_SECS_UTC1980, 0); // 1980-01-01 (19 leap secs added)
UtcInstant expected = UtcInstant.ofModifiedJulianDay(MJD_1980, 0);
for (int i = -10; i < 10; i++) {
Duration duration = Duration.ofNanos(i);
assertEquals(rules.convertToUtc(tai.plus(duration)), expected.plus(duration));
assertEquals(
rules.convertToTai(expected.plus(duration)), tai.plus(duration)); // check reverse
}
for (int i = -10; i < 10; i++) {
Duration duration = Duration.ofSeconds(i);
assertEquals(rules.convertToUtc(tai.plus(duration)), expected.plus(duration));
assertEquals(
rules.convertToTai(expected.plus(duration)), tai.plus(duration)); // check reverse
}
}
// -------------------------------------------------------------------------
public void test_negativeLeap_justBeforeLeap() {
rules.register(MJD_2100 - 1, -1);
TaiInstant tai =
TaiInstant.ofTaiSeconds(
TAI_SECS_UTC2100_EXTRA_NEGATIVE_LEAP - 1, 0); // 2100-01-01 (1 second before 2100)
UtcInstant expected =
UtcInstant.ofModifiedJulianDay(MJD_2100 - 1, (SECS_PER_DAY - 2) * NANOS_PER_SEC);
assertEquals(rules.convertToUtc(tai), expected);
assertEquals(rules.convertToTai(expected), tai); // check reverse
}
public void test_convertToInstant_slsMicros() {
for (int i = 1; i < 1000; i++) {
long utcNanos = (SECS_PER_DAY + 1 - 1000) * NANOS_PER_SEC + i * 1000;
long startSls = (86401 - 1000) * NANOS_PER_SEC;
long slsNanos = (utcNanos - (utcNanos - startSls) / 1000);
OffsetDateTime odt =
OffsetDateTime.of(
1979, 12, 31, 23, 43, 21, (int) (slsNanos % NANOS_PER_SEC), ZoneOffset.UTC);
Instant instant = odt.toInstant();
UtcInstant utc =
UtcInstant.ofModifiedJulianDay(
MJD_1980 - 1, (SECS_PER_DAY + 1 - 1000) * NANOS_PER_SEC + i * 1000);
assertEquals(rules.convertToInstant(utc), instant);
assertEquals(rules.convertToUtc(instant), utc);
}
}
public void test_convertToInstant_slsNanos() {
for (int i = 1; i < 5005; i++) {
long utcNanos = (SECS_PER_DAY + 1 - 1000) * NANOS_PER_SEC + i;
long startSls = (86401 - 1000) * NANOS_PER_SEC;
long slsNanos = (utcNanos - (utcNanos - startSls) / 1000);
OffsetDateTime odt =
OffsetDateTime.of(
1979, 12, 31, 23, 43, 21, (int) (slsNanos % NANOS_PER_SEC), ZoneOffset.UTC);
Instant instant = odt.toInstant();
UtcInstant utc = UtcInstant.ofModifiedJulianDay(MJD_1980 - 1, utcNanos);
assertEquals(rules.convertToInstant(utc), instant);
// not all instants can map back to the correct UTC value
long reverseUtcNanos = startSls + ((slsNanos - startSls) * 1000L) / (1000L - 1);
assertEquals(
rules.convertToUtc(instant),
UtcInstant.ofModifiedJulianDay(MJD_1980 - 1, reverseUtcNanos));
}
}
@Test(expectedExceptions = NullPointerException.class)
public void test_convertToUtc_TaiInstant_null() {
rules.convertToUtc((TaiInstant) null);
}
public void test_convertToUtc_TaiInstant_2100() {
TaiInstant tai = TaiInstant.ofTaiSeconds(TAI_SECS_UTC2100, 0); // 2100-01-01
UtcInstant expected = UtcInstant.ofModifiedJulianDay(MJD_2100, 0);
assertEquals(rules.convertToUtc(tai), expected);
assertEquals(rules.convertToTai(expected), tai); // check reverse
}