use of android.util.Rational in project android_frameworks_base by DirtyUnicorns.
the class RangeTest method testInRange.
@SmallTest
public void testInRange() {
Range<Integer> hundredOneTwo = Range.create(100, 200);
assertInRange(hundredOneTwo, 100);
assertInRange(hundredOneTwo, 200);
assertInRange(hundredOneTwo, 150);
assertOutOfRange(hundredOneTwo, 99);
assertOutOfRange(hundredOneTwo, 201);
assertOutOfRange(hundredOneTwo, 100000);
Range<Float> infinities = Range.create(Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY);
assertInRange(infinities, Float.NEGATIVE_INFINITY);
assertInRange(infinities, Float.POSITIVE_INFINITY);
assertInRange(infinities, 0.0f);
assertOutOfRange(infinities, Float.NaN);
Range<Rational> negativeOneTenthPositiveOneTenth = new Range<Rational>(new Rational(-1, 10), new Rational(1, 10));
assertInRange(negativeOneTenthPositiveOneTenth, new Rational(-1, 10));
assertInRange(negativeOneTenthPositiveOneTenth, new Rational(1, 10));
assertInRange(negativeOneTenthPositiveOneTenth, Rational.ZERO);
assertOutOfRange(negativeOneTenthPositiveOneTenth, new Rational(-100, 1));
assertOutOfRange(negativeOneTenthPositiveOneTenth, new Rational(100, 1));
}
use of android.util.Rational in project android_frameworks_base by DirtyUnicorns.
the class RationalTest method testEquals.
@SmallTest
public void testEquals() {
Rational r = new Rational(1, 2);
assertEquals(1, r.getNumerator());
assertEquals(2, r.getDenominator());
assertEquals(r, r);
assertFalse(r.equals(null));
assertFalse(r.equals(new Object()));
Rational twoThirds = new Rational(2, 3);
assertFalse(r.equals(twoThirds));
assertFalse(twoThirds.equals(r));
Rational fourSixths = new Rational(4, 6);
assertEquals(twoThirds, fourSixths);
assertEquals(fourSixths, twoThirds);
Rational moreComplicated = new Rational(5 * 6 * 7 * 8 * 9, 1 * 2 * 3 * 4 * 5);
Rational moreComplicated2 = new Rational(5 * 6 * 7 * 8 * 9 * 78, 1 * 2 * 3 * 4 * 5 * 78);
assertEquals(moreComplicated, moreComplicated2);
assertEquals(moreComplicated2, moreComplicated);
// Ensure negatives are fine
twoThirds = new Rational(-2, 3);
fourSixths = new Rational(-4, 6);
assertEquals(twoThirds, fourSixths);
assertEquals(fourSixths, twoThirds);
moreComplicated = new Rational(-5 * 6 * 7 * 8 * 9, 1 * 2 * 3 * 4 * 5);
moreComplicated2 = new Rational(-5 * 6 * 7 * 8 * 9 * 78, 1 * 2 * 3 * 4 * 5 * 78);
assertEquals(moreComplicated, moreComplicated2);
assertEquals(moreComplicated2, moreComplicated);
// Zero is always equal to itself
Rational zero2 = new Rational(0, 100);
assertEquals(ZERO, zero2);
assertEquals(zero2, ZERO);
// NaN is always equal to itself
Rational nan = NaN;
Rational nan2 = new Rational(0, 0);
assertTrue(nan.equals(nan));
assertTrue(nan.equals(nan2));
assertTrue(nan2.equals(nan));
assertFalse(nan.equals(r));
assertFalse(r.equals(nan));
// Infinities of the same sign are equal.
Rational posInf = POSITIVE_INFINITY;
Rational posInf2 = new Rational(2, 0);
Rational negInf = NEGATIVE_INFINITY;
Rational negInf2 = new Rational(-2, 0);
assertEquals(posInf, posInf);
assertEquals(negInf, negInf);
assertEquals(posInf, posInf2);
assertEquals(negInf, negInf2);
// Infinities aren't equal to anything else.
assertFalse(posInf.equals(negInf));
assertFalse(negInf.equals(posInf));
assertFalse(negInf.equals(r));
assertFalse(posInf.equals(r));
assertFalse(r.equals(negInf));
assertFalse(r.equals(posInf));
assertFalse(posInf.equals(nan));
assertFalse(negInf.equals(nan));
assertFalse(nan.equals(posInf));
assertFalse(nan.equals(negInf));
}
use of android.util.Rational in project android_frameworks_base by DirtyUnicorns.
the class RationalTest method testSerialize.
@SmallTest
public void testSerialize() throws ClassNotFoundException, IOException {
/*
* Check correct [de]serialization
*/
assertEqualsAfterSerializing(ZERO);
assertEqualsAfterSerializing(NaN);
assertEqualsAfterSerializing(NEGATIVE_INFINITY);
assertEqualsAfterSerializing(POSITIVE_INFINITY);
assertEqualsAfterSerializing(UNIT);
assertEqualsAfterSerializing(new Rational(100, 200));
assertEqualsAfterSerializing(new Rational(-100, 200));
assertEqualsAfterSerializing(new Rational(5, 1));
assertEqualsAfterSerializing(new Rational(Integer.MAX_VALUE, Integer.MIN_VALUE));
/*
* Check bad deserialization fails
*/
try {
// [0, 100] , should be [0, 1]
Rational badZero = createIllegalRational(0, 100);
Rational results = serializeRoundTrip(badZero);
fail("Deserializing " + results + " should not have succeeded");
} catch (InvalidObjectException e) {
// OK
}
try {
// [100, 0] , should be [1, 0]
Rational badPosInfinity = createIllegalRational(100, 0);
Rational results = serializeRoundTrip(badPosInfinity);
fail("Deserializing " + results + " should not have succeeded");
} catch (InvalidObjectException e) {
// OK
}
try {
Rational badNegInfinity = // [-100, 0] , should be [-1, 0]
createIllegalRational(-100, 0);
Rational results = serializeRoundTrip(badNegInfinity);
fail("Deserializing " + results + " should not have succeeded");
} catch (InvalidObjectException e) {
// OK
}
try {
// [2,4] , should be [1, 2]
Rational badReduced = createIllegalRational(2, 4);
Rational results = serializeRoundTrip(badReduced);
fail("Deserializing " + results + " should not have succeeded");
} catch (InvalidObjectException e) {
// OK
}
try {
// [-2, 4] should be [-1, 2]
Rational badReducedNeg = createIllegalRational(-2, 4);
Rational results = serializeRoundTrip(badReducedNeg);
fail("Deserializing " + results + " should not have succeeded");
} catch (InvalidObjectException e) {
// OK
}
}
use of android.util.Rational in project android_frameworks_base by DirtyUnicorns.
the class RationalTest method testValueConversions.
@SmallTest
public void testValueConversions() {
// Unit, simple case
assertValueEquals(UNIT, 1.0f);
assertValueEquals(UNIT, 1.0);
assertValueEquals(UNIT, 1L);
assertValueEquals(UNIT, 1);
assertValueEquals(UNIT, (short) 1);
// Zero, simple case
assertValueEquals(ZERO, 0.0f);
assertValueEquals(ZERO, 0.0);
assertValueEquals(ZERO, 0L);
assertValueEquals(ZERO, 0);
assertValueEquals(ZERO, (short) 0);
// NaN is 0 for integers, not-a-number for floating point
assertValueEquals(NaN, Float.NaN);
assertValueEquals(NaN, Double.NaN);
assertValueEquals(NaN, 0L);
assertValueEquals(NaN, 0);
assertValueEquals(NaN, (short) 0);
// Positive infinity, saturates upwards for integers
assertValueEquals(POSITIVE_INFINITY, Float.POSITIVE_INFINITY);
assertValueEquals(POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
assertValueEquals(POSITIVE_INFINITY, Long.MAX_VALUE);
assertValueEquals(POSITIVE_INFINITY, Integer.MAX_VALUE);
assertValueEquals(POSITIVE_INFINITY, (short) -1);
// Negative infinity, saturates downwards for integers
assertValueEquals(NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY);
assertValueEquals(NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
assertValueEquals(NEGATIVE_INFINITY, Long.MIN_VALUE);
assertValueEquals(NEGATIVE_INFINITY, Integer.MIN_VALUE);
assertValueEquals(NEGATIVE_INFINITY, (short) 0);
// Normal finite values, round down for integers
final Rational oneQuarter = new Rational(1, 4);
assertValueEquals(oneQuarter, 1.0f / 4.0f);
assertValueEquals(oneQuarter, 1.0 / 4.0);
assertValueEquals(oneQuarter, 0L);
assertValueEquals(oneQuarter, 0);
assertValueEquals(oneQuarter, (short) 0);
final Rational nineFifths = new Rational(9, 5);
assertValueEquals(nineFifths, 9.0f / 5.0f);
assertValueEquals(nineFifths, 9.0 / 5.0);
assertValueEquals(nineFifths, 1L);
assertValueEquals(nineFifths, 1);
assertValueEquals(nineFifths, (short) 1);
final Rational negativeHundred = new Rational(-1000, 10);
assertValueEquals(negativeHundred, -100.f / 1.f);
assertValueEquals(negativeHundred, -100.0 / 1.0);
assertValueEquals(negativeHundred, -100L);
assertValueEquals(negativeHundred, -100);
assertValueEquals(negativeHundred, (short) -100);
// Short truncates if the result is too large
assertValueEquals(new Rational(Integer.MAX_VALUE, 1), (short) Integer.MAX_VALUE);
assertValueEquals(new Rational(0x00FFFFFF, 1), (short) 0x00FFFFFF);
assertValueEquals(new Rational(0x00FF00FF, 1), (short) 0x00FF00FF);
}
use of android.util.Rational in project android_frameworks_base by DirtyUnicorns.
the class RationalTest method testReduction.
@SmallTest
public void testReduction() {
Rational moreComplicated = new Rational(5 * 78, 7 * 78);
assertEquals(new Rational(5, 7), moreComplicated);
assertEquals(5, moreComplicated.getNumerator());
assertEquals(7, moreComplicated.getDenominator());
Rational posInf = new Rational(5, 0);
assertEquals(1, posInf.getNumerator());
assertEquals(0, posInf.getDenominator());
assertEquals(POSITIVE_INFINITY, posInf);
Rational negInf = new Rational(-100, 0);
assertEquals(-1, negInf.getNumerator());
assertEquals(0, negInf.getDenominator());
assertEquals(NEGATIVE_INFINITY, negInf);
Rational zero = new Rational(0, -100);
assertEquals(0, zero.getNumerator());
assertEquals(1, zero.getDenominator());
assertEquals(ZERO, zero);
Rational flipSigns = new Rational(1, -1);
assertEquals(-1, flipSigns.getNumerator());
assertEquals(1, flipSigns.getDenominator());
Rational flipAndReduce = new Rational(100, -200);
assertEquals(-1, flipAndReduce.getNumerator());
assertEquals(2, flipAndReduce.getDenominator());
}
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