public void testNegativeZero(int scale, IonDecimal actual) {
assertEquals(-0f, actual.floatValue());
assertEquals(-0d, actual.doubleValue());
BigDecimal bd = actual.bigDecimalValue();
Decimal dec = actual.decimalValue();
assertEquals(0, BigDecimal.ZERO.compareTo(bd));
checkDecimal(0, scale, bd);
checkDecimal(0, scale, dec);
assertEquals(0, Decimal.NEGATIVE_ZERO.compareTo(dec));
assertTrue(dec.isNegativeZero());
}
/** Ensure that {@link Decimal#equals} and {@link Decimal#hashCode} are in sync. */
@Test
public void testDecimalHash() {
BigDecimal d1 = new BigDecimal("0.");
BigDecimal d2 = Decimal.valueOf("0.");
assertEquals(d1, d2);
assertEquals("hash code", d1.hashCode(), d2.hashCode());
d1 = new BigDecimal("0.00");
d2 = Decimal.valueOf("0.00");
assertEquals(d1, d2);
assertEquals("hash code", d1.hashCode(), d2.hashCode());
// Decimal doesn't override equals() so it negative and positive zeros
// are equal. We can't change that since we can't make it symmetric.
// We must also keep the hash codes the same.
d1 = new BigDecimal("0.00");
d2 = Decimal.valueOf("-0.00");
assertEquals(d1, d2);
assertEquals("hash code", d1.hashCode(), d2.hashCode());
}
