@Override
public PersistentQuantity createQuantity(
final PersistentAbsUnit unit, final common.Fraction amount) throws PersistenceException {
// amount in FractionManager suchen oder neu erstellen.
final String fractionStroke = "/";
final String enumeratorString = amount.getEnumerator().toString();
final String denominatorString = amount.getEnumerator().toString();
final String fractionSearchString = enumeratorString + fractionStroke + denominatorString;
common.Fraction persistentAmount;
try {
persistentAmount = FractionManager.getTheFractionManager().getFraction(fractionSearchString);
} catch (final NotFoundException e) {
persistentAmount = amount;
try {
FractionManager.getTheFractionManager().addFraction(fractionSearchString, persistentAmount);
} catch (final DoubleDefinitionException e1) {
System.out.println("error while fraction creation");
}
}
final PersistentQuantity newQuantity = Quantity.createQuantity(amount, unit);
getThis().getQuantities().add(newQuantity);
return newQuantity;
}
@Test
public void testAdd() {
assertEquals(one, zero.add(one));
assertEquals(subtractOne, zero.add(subtractOne));
assertEquals(posRat, zero.add(posRat));
assertEquals(negRat, zero.add(negRat));
assertEquals(zero, one.add(subtractOne));
assertEquals(one, new Fraction(3, 2).add(new Fraction(-1, 2)));
assertEquals(new Fraction(-3, 4), new Fraction(-1, 4).add(new Fraction(-1, 2)));
assertEquals(new Fraction(-21, 20), new Fraction(-3, 10).add(new Fraction(-3, 4)));
assertEquals(new Fraction(9587, 8547), new Fraction(100, 111).add(new Fraction(17, 77)));
}
@Test
public void testsubtract() {
assertEquals(subtractOne, zero.subtract(one));
assertEquals(one, zero.subtract(subtractOne));
assertEquals(posRat, posRat.subtract(zero));
assertEquals(negRat, negRat.subtract(zero));
assertEquals(zero, subtractOne.subtract(subtractOne));
assertEquals(new Fraction(1, 2), new Fraction(3, 2).subtract(one));
assertEquals(new Fraction(1, 4), new Fraction(-1, 4).subtract(new Fraction(-1, 2)));
assertEquals(new Fraction(-3, 10), new Fraction(-21, 20).subtract(new Fraction(-3, 4)));
assertEquals(new Fraction(100, 111), new Fraction(9587, 8547).subtract(new Fraction(17, 77)));
}
/**
* testet die Multiplikation mit der gleichen Einheit .
*
* @throws PersistenceException
* @throws NotComputableException
*/
@Test
public void testBasicCalculation_Same_Unit_mul()
throws PersistenceException, NotComputableException {
final PersistentQuantity two = quanMan.createQuantity(meter, Fraction.parse("2"));
final PersistentQuantity eight = quanMan.createQuantity(meter, Fraction.parse("8"));
/*
* Test 1: 2m * 8m = 16m^2 (simple)
*/
final PersistentQuantity test1_act = (PersistentQuantity) quanMan.mul(two, eight);
final PersistentQuantity test1_exp = quanMan.createQuantity(squareMeter, Fraction.parse("16"));
assertEquals(test1_exp.getUnit(), test1_act.getUnit());
assertEquals(test1_exp.getAmount(), test1_act.getAmount());
}
@Test(expected = Exception.class)
public void testDivideZeroByZeroError() {
try {
zero.divide(zero);
} catch (ArithmeticException e) {
assertTrue(true);
}
}
@Test
public void testDivideByZeroError() {
try {
posRat.divide(zero);
} catch (ArithmeticException e) {
assertTrue(true);
}
}
public common.Fraction calcFraction(final common.Fraction arg1, final common.Fraction arg2)
throws model.NotComputableException, PersistenceException {
try {
return arg1.div(arg2);
} catch (final Throwable e) {
throw new model.NotComputableException(e.getMessage());
}
}
/**
* testet die Division mit der gleichen Einheit .
*
* @throws PersistenceException
* @throws NotComputableException
*/
@Test
public void testBasicCalculation_Same_Unit_div()
throws PersistenceException, NotComputableException {
final PersistentQuantity two = quanMan.createQuantity(meter, Fraction.parse("2"));
final PersistentQuantity eight = quanMan.createQuantity(squareMeter, Fraction.parse("8"));
final PersistentQuantity fiveMeter = quanMan.createQuantity(meter, Fraction.parse("5"));
final PersistentQuantity twoSeconds = quanMan.createQuantity(second, Fraction.parse("2"));
/*
* Test 16m^2 / 8m = 2m (simple)
*/
final PersistentQuantity test1_act = (PersistentQuantity) quanMan.div(eight, two);
final PersistentQuantity test1_exp = quanMan.createQuantity(meter, Fraction.parse("4"));
assertEquals(test1_exp.getUnit(), test1_act.getUnit());
assertEquals(test1_exp.getAmount(), test1_act.getAmount());
/*
* Test 5m / 2s = 5/2 m/s
*/
final PersistentQuantity test2_act = (PersistentQuantity) quanMan.div(fiveMeter, twoSeconds);
final PersistentQuantity test2_exp =
quanMan.createQuantity(meterPerSecond, Fraction.parse("5/2"));
assertEquals(test2_exp.getUnit(), test2_act.getUnit());
assertEquals(test2_exp.getAmount(), test2_act.getAmount());
}
@Test
public void testFormatDec() {
Fraction r1 = new Fraction(2, 3);
assertEquals("0,66", r1.formatDec(2));
r1 = new Fraction(-0, 1);
assertEquals("0,00", r1.formatDec(2));
r1 = new Fraction(-2, -3);
assertEquals("0,66", r1.formatDec(2));
r1 = new Fraction(-7, 3);
assertEquals("-2,33", r1.formatDec(2));
r1 = new Fraction(-7, 1);
assertEquals("-7,00", r1.formatDec(2));
r1 = new Fraction(-7, 1);
assertEquals("-7", r1.formatDec(0));
r1 = new Fraction(-15, 2);
assertEquals("-7", r1.formatDec(0));
r1 = new Fraction(-10000, 1);
assertEquals("-10000,0000000000", r1.formatDec(10));
}
/**
* testet die Addition mit der gleichen Einheit.
*
* @throws PersistenceException
* @throws NotComputableException
*/
@Test
public void testBasicCalculation_Same_Unit_add()
throws PersistenceException, NotComputableException {
final PersistentQuantity two = quanMan.createQuantity(meter, Fraction.parse("2"));
final PersistentQuantity minusOne = quanMan.createQuantity(meter, Fraction.parse("-1"));
final PersistentQuantity eight = quanMan.createQuantity(meter, Fraction.parse("8"));
/*
* Test 1: -1 +2 = 1
*/
final PersistentQuantity test1_act = (PersistentQuantity) quanMan.add(minusOne, two);
final PersistentQuantity test1_exp = quanMan.createQuantity(meter, Fraction.parse("1"));
assertEquals(test1_exp.getUnit(), test1_act.getUnit());
assertEquals(test1_exp.getAmount(), test1_act.getAmount());
/*
* Test 2: 8 + -1 = 7
*/
final PersistentQuantity test2_act = (PersistentQuantity) quanMan.add(eight, minusOne);
final PersistentQuantity test2_exp = quanMan.createQuantity(meter, Fraction.parse("7"));
assertEquals(test1_exp.getUnit(), test1_act.getUnit());
assertEquals(test1_exp.getAmount(), test1_act.getAmount());
}
@Test
public void testDivide() {
assertEquals(zero, zero.divide(one));
assertEquals(zero, zero.divide(subtractOne));
assertEquals(zero, zero.divide(posRat));
assertEquals(zero, zero.divide(negRat));
assertEquals(one, one.divide(one));
assertEquals(posRat, posRat.divide(one));
assertEquals(negRat, negRat.divide(one));
assertEquals(new Fraction(1, 2), new Fraction(1, 4).divide(new Fraction(1, 2)));
assertEquals(new Fraction(1, 2), new Fraction(-1, 4).divide(new Fraction(-1, 2)));
assertEquals(new Fraction(2, 5), new Fraction(-3, 10).divide(new Fraction(-3, 4)));
assertEquals(new Fraction(100, 111), new Fraction(1700, 8547).divide(new Fraction(17, 77)));
assertEquals(posRat, posRat.multiply(negRat).divide(negRat));
}
@Test
public void testMultiply() {
assertEquals(zero, zero.multiply(zero));
assertEquals(zero, one.multiply(zero));
assertEquals(zero, zero.multiply(posRat));
assertEquals(zero, zero.multiply(negRat));
assertEquals(one, one.multiply(one));
assertEquals(posRat, one.multiply(posRat));
assertEquals(negRat, one.multiply(negRat));
assertEquals(negRat, negRat.multiply(one));
assertEquals(new Fraction(1, 4), new Fraction(1, 2).multiply(new Fraction(1, 2)));
assertEquals(new Fraction(-1, 4), new Fraction(1, 2).multiply(new Fraction(-1, 2)));
assertEquals(new Fraction(-3, 10), new Fraction(2, 5).multiply(new Fraction(-3, 4)));
assertEquals(new Fraction(1700, 8547), new Fraction(17, 77).multiply(new Fraction(100, 111)));
}
public void test1() {
Fraction r1 = new Fraction(2, 3);
Fraction r2 = new Fraction(4, 6);
Fraction r3 = new Fraction(4, 9);
Fraction r4 = new Fraction(4, 3);
Fraction r5 = new Fraction(0, 1);
Fraction r6 = new Fraction(1, 1);
Fraction r7 = new Fraction(1, 3);
Fraction r8 = new Fraction(2, 1);
Fraction r9 = new Fraction(2, 9);
Fraction r10 = new Fraction(-1, 3);
assertEquals(r1, r2);
assertEquals(r3, r1.multiply(r2));
assertEquals(r1, r1.multiply(r6));
assertEquals(r1, r6.multiply(r1));
assertEquals(r5, r5.multiply(r1));
assertEquals(r10, r10.multiply(r6));
assertEquals(r6, r1.divide(r2));
assertEquals(r5, r5.divide(r1));
assertEquals(r1, r1.divide(r6));
assertEquals(r7, r3.divide(r4));
try {
assertEquals(r7, r3.divide(r5));
} catch (ArithmeticException e) {
assertTrue(true);
}
assertEquals(r4, r1.add(r2));
assertEquals(r8, r2.add(r4));
assertEquals(r6, r1.add(r7));
assertEquals(r6, r5.add(r6));
assertEquals(r1, r10.add(r6));
assertEquals(r5, r1.subtract(r2));
assertEquals(r9, r2.subtract(r3));
assertEquals(r4, r4.subtract(r5));
assertEquals(r10, r7.subtract(r1));
}
