public function testCompose()
{
$firstCallable = self::getCallable();
$first = UnaryFunktion::create($firstCallable);
$secondCallable = function ($value) {
return $value + 1;
};
$second = UnaryFunktion::create($secondCallable);
$composed = $first->compose($second);
$a = rand(1, 100);
$this->assertInstanceOf(UnaryFunktion::class, $composed);
$this->assertEquals($secondCallable($firstCallable($a)), $composed->call($a));
}
public function testCompose()
{
$firstCallable = self::getCallable();
$first = NaryPredicate::create($firstCallable);
$secondCallable = function ($value) {
return $value && true;
};
$second = UnaryFunktion::create($secondCallable);
$composed = $first->compose($second);
$a = rand(1, 100);
$b = rand(1, 100);
$c = rand(1, 100);
$d = rand(1, 100);
$this->assertInstanceOf(NaryFunktion::class, $composed);
$this->assertEquals($secondCallable($firstCallable($a, $b, $c, $d)), $composed->call($a, $b, $c, $d));
}
/**
* Factory Method for unary functors.
*
* @param callable $funktion
* @return UnaryFunktionInterface
*/
public static final function newUnaryFunktion(callable $funktion) : UnaryFunktionInterface
{
return UnaryFunktion::create($funktion);
}