public function testCompose()
{
$firstCallable = self::getCallable();
$first = BinaryFunktion::create($firstCallable);
$secondCallable = function ($value) {
return $value + 1;
};
$second = UnaryFunktion::create($secondCallable);
$composed = $first->compose($second);
$a = rand(1, 100);
$b = rand(1, 100);
$this->assertInstanceOf(BinaryFunktion::class, $composed);
$this->assertEquals($secondCallable($firstCallable($a, $b)), $composed->call($a, $b));
}
/**
* Factory Method for binary functors.
*
* @param callable $bifunctor
* @return BinaryFunktionInterface
*/
public static final function newBinaryFunktion(callable $funktion) : BinaryFunktionInterface
{
return BinaryFunktion::create($funktion);
}
