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