public function testToFunktion()
{
$predicate = UnaryPredicate::create(self::getCallable());
$funktion = $predicate->toFunktion();
$this->assertInstanceOf(UnaryFunktion::class, $funktion);
$this->assertEquals($predicate->getCallable(), $funktion->getCallable());
$this->assertEquals(self::getCallable(), $funktion->getCallable());
}
/**
* Factory Method for Predicate.
*
* @param callable $predicate
* @return UnaryPredicateInterface
*/
public static final function newUnaryPredicate(callable $predicate) : UnaryPredicateInterface
{
return UnaryPredicate::create($predicate);
}