public void testCeilingPowerOfTwoZero() {
try {
BigIntegerMath.ceilingPowerOfTwo(BigInteger.ZERO);
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException expected) {
}
}
public void testCeilingPowerOfTwo() {
for (BigInteger x : POSITIVE_BIGINTEGER_CANDIDATES) {
BigInteger result = BigIntegerMath.ceilingPowerOfTwo(x);
assertTrue(BigIntegerMath.isPowerOfTwo(result));
assertTrue(result.compareTo(x) >= 0);
assertTrue(result.compareTo(x.add(x)) < 0);
}
}
public void testCeilingPowerOfTwoNegative() {
for (BigInteger x : NEGATIVE_BIGINTEGER_CANDIDATES) {
try {
BigIntegerMath.ceilingPowerOfTwo(x);
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException expected) {
}
}
}