Functional\Tests\SortTest::testPreserveKeys PHP Method

    public function testPreserveKeys()
    {
        $this->assertSame([2 => 'aardvark', 1 => 'bear', 0 => 'cat'], F\sort($this->list, $this->sortCallback, true));
        $this->assertSame([2 => 'aardvark', 1 => 'bear', 0 => 'cat'], F\sort($this->listIterator, $this->sortCallback, true));
        $this->assertSame(['a' => 'aardvark', 'b' => 'bear', 'c' => 'cat'], F\sort($this->hash, $this->sortCallback, true));
        $this->assertSame(['a' => 'aardvark', 'b' => 'bear', 'c' => 'cat'], F\sort($this->hashIterator, $this->sortCallback, true));
    }