public void testGetReducedFraction() {
Fraction threeFourths = new Fraction(3, 4);
assertTrue(threeFourths.equals(Fraction.getReducedFraction(6, 8)));
assertTrue(Fraction.ZERO.equals(Fraction.getReducedFraction(0, -1)));
try {
Fraction.getReducedFraction(1, 0);
fail("expecting ArithmeticException");
} catch (ArithmeticException ex) {
// expected
}
assertEquals(Fraction.getReducedFraction(2, Integer.MIN_VALUE).getNumerator(), -1);
assertEquals(Fraction.getReducedFraction(1, -1).getNumerator(), -1);
}
public void testEqualsAndHashCode() {
Fraction zero = new Fraction(0, 1);
Fraction nullFraction = null;
assertTrue(zero.equals(zero));
assertFalse(zero.equals(nullFraction));
assertFalse(zero.equals(Double.valueOf(0)));
Fraction zero2 = new Fraction(0, 2);
assertTrue(zero.equals(zero2));
assertEquals(zero.hashCode(), zero2.hashCode());
Fraction one = new Fraction(1, 1);
assertFalse((one.equals(zero) || zero.equals(one)));
}