public function testItApplyTheCallableOnEachItem()
{
$transducer = Fp\filtering(is_even_makker());
$squared = Fp\transduce($transducer, Fp\appending(), range(1, 6));
$this->assertEquals([2, 4, 6], $squared);
}
public function testItReturnASingleValueForCollectionTransducer()
{
$transducer = Fp\filtering(is_even_makker());
$reduced = Fp\transduce($transducer, Fp\single_result(), range(3, 6));
$this->assertEquals(4, $reduced);
}
public function testMappingAndFilteringAndEnumeratingComposition()
{
$transformed = Fp\transduce(Fp\compose(Fp\mapping(square_makker()), Fp\filtering(is_even_makker()), Fp\enumerating()), Fp\appending(), range(1, 6));
$this->assertEquals([[0, 4], [1, 16], [2, 36]], $transformed);
}
public function testFilterWithCollection()
{
$this->assertEquals([2, 4], Fp\filter(is_even_makker(), new Fp\Collection\Collection([1, 2, 3, 4]))->values());
}
public function testTransducing()
{
$transduced = $this->collection->transduce(Fp\compose(Fp\map(square_makker()), Fp\filter(is_even_makker())), Fp\appending())->values();
$this->assertEquals([4, 16], $transduced);
}