Parkour\TraverseTest::testReduce PHP Method

    public function testReduce()
    {
        $data = [1, 2];
        $closure = $this->closure([[0, 1, 0, 1], [1, 2, 1, 3]]);
        $expected = 3;
        $this->assertEquals($expected, Traverse::reduce($data, $closure, 0));
    }