public function testToString()
{
$volume = new Volume(3);
$this->assertEquals('3l', $volume->__toString());
}
/**
* Calculate the effects of adding a compound.
*
* Returns a solution object where the water in the tank is the solvent and
* the added compound is the solute.
*
* @param CompoundInterface $compound Compound added.
*
* @return Solution Tank water as a solution.
*/
public function effectsOf(CompoundInterface $compound)
{
return new Solution($compound, new Volume($this->volume->toUnit() + $compound->getVolume()->toUnit()));
}
/**
* Gets wet compound dose by name and quantity.
*
* @param string $compoundId Wet compound name.
* @param Volume $volume Quantity of the compound.
*
* @return Solution Solution object.
*/
public function getWetCompound($compoundId, Volume $volume = null)
{
if (!array_key_exists($compoundId, $this->data['wetCompounds'])) {
return null;
}
if ($volume === null) {
$volume = new Volume(1);
}
$compound = new Compound($this->data['wetCompounds'][$compoundId], new Mass($volume->toUnit('l')));
return new Solution($compound, $volume);
}
