public void testRemainder() {
for (long a : UNSIGNED_INTS) {
for (long b : UNSIGNED_INTS) {
try {
assertEquals((int) (a % b), UnsignedInts.remainder((int) a, (int) b));
assertFalse(b == 0);
} catch (ArithmeticException e) {
assertEquals(0, b);
}
}
}
}
@GwtIncompatible("Too slow in GWT (~3min fully optimized)")
public void testDivideRemainderEuclideanProperty() {
// Use a seed so that the test is deterministic:
Random r = new Random(0L);
for (int i = 0; i < 1000000; i++) {
int dividend = r.nextInt();
int divisor = r.nextInt();
// Test that the Euclidean property is preserved:
assertTrue(
dividend
- (divisor * UnsignedInts.divide(dividend, divisor)
+ UnsignedInts.remainder(dividend, divisor))
== 0);
}
}
