/**
* @dataProvider compareProvider
*/
public function testCompare(DecimalValue $a, DecimalValue $b, $expected)
{
$actual = $a->compare($b);
$this->assertSame($expected, $actual);
$actual = $b->compare($a);
$this->assertSame(-$expected, $actual);
}
/**
* Constructs a new QuantityValue object, representing the given value.
*
* @since 0.1
*
* @param DecimalValue $amount
* @param string $unit A unit identifier. Must not be empty, use "1" for unit-less quantities.
* @param DecimalValue $upperBound The upper bound of the quantity, inclusive.
* @param DecimalValue $lowerBound The lower bound of the quantity, inclusive.
*
* @throws IllegalValueException
*/
public function __construct(DecimalValue $amount, $unit, DecimalValue $upperBound, DecimalValue $lowerBound)
{
if ($lowerBound->compare($amount) > 0) {
throw new IllegalValueException('$lowerBound ' . $lowerBound->getValue() . ' must be <= $amount ' . $amount->getValue());
}
if ($upperBound->compare($amount) < 0) {
throw new IllegalValueException('$upperBound ' . $upperBound->getValue() . ' must be >= $amount ' . $amount->getValue());
}
if (!is_string($unit)) {
throw new IllegalValueException('$unit needs to be a string, not ' . gettype($unit));
}
if ($unit === '') {
throw new IllegalValueException('$unit can not be an empty string (use "1" for unit-less quantities)');
}
$this->amount = $amount;
$this->unit = $unit;
$this->upperBound = $upperBound;
$this->lowerBound = $lowerBound;
}