/**
* @dataProvider comparisonProvider
* @covers ::compare
*
* @param mixed $a
* @param mixed $b
* @param int $expected
* @param int $scale
*/
public function testCanCompare($a, $b, int $expected, int $scale = null)
{
$decimalA = Decimal::create($a);
// This is to ensure we test the path where the same instance is used for comparison. In that case there
// is an optimisation which returns 0 without any further checking. This is really an implementation detail
// that cannot be explicitly tested, but this allows full coverage.
$decimalB = $a === $b ? $decimalA : Decimal::create($b);
$result = $decimalA->compare($decimalB, $scale);
// Integer is not compared directly Decimal Ratio::compare() only guarantees a return of <=> 0.
if ($expected === -1) {
self::assertLessThan(0, $result);
} elseif ($expected === 1) {
self::assertGreaterThan(0, $result);
} else {
self::assertSame(0, $result);
}
}
/**
* @dataProvider roundProvider
* @covers ::round
*
* @param mixed $decimal
* @param int $decimalPlaces
* @param string $expected
*/
public function testCanRound($decimal, int $decimalPlaces, string $expected)
{
$decimal = Decimal::create($decimal);
$rounded = $decimal->round($decimalPlaces);
self::assertSame($expected, $rounded->toString());
}
/**
* @dataProvider absProvider
* @covers ::abs
*
* @param mixed $decimal
* @param string $expected
*/
public function testCanGetAbsoluteValue($decimal, string $expected)
{
$decimal = Decimal::create($decimal);
$absolute = $decimal->abs();
self::assertSame($expected, $absolute->toString());
}
/**
* @dataProvider ratioToExpectedDecimalProvider
* @covers ::create
*
* @param string $ratio
* @param string $decimal
*/
public function testCreateDelegatesToStaticRatioFactory(string $ratio, string $decimal, int $scale = null)
{
$decimal = Decimal::create($decimal, $scale);
$ratio = Ratio::fromString($ratio);
self::assertTrue($decimal->equals(Decimal::fromRatio($ratio, $scale)));
}