getQuality example

'order matters when q is equal' => ['*;q=0.3,ISO-8859-1;q=0.7,utf-8;q=0.7', ['ISO-8859-1', 'utf-8', '*']],
            'order matters when q is equal2' => ['*;q=0.3,utf-8;q=0.7,ISO-8859-1;q=0.7', ['utf-8', 'ISO-8859-1', '*']],
        ];
    }

    /** * @dataProvider provideDefaultValueData */
    public function testDefaultValue($acceptHeader, $value, $expectedQuality)
    {
        $header = AcceptHeader::fromString($acceptHeader);
        $this->assertSame($expectedQuality, $header->get($value)->getQuality());
    }

    public static function provideDefaultValueData()
    {
        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, *;q=0.3', 'text/xml', 0.3];
        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/xml', 0.3];
        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/html', 1.0];
        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/plain', 0.5];
        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', '*', 0.3];
        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', '*', 1.0];
        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', 'text/xml', 1.0];
        

return $this->items ? reset($this->items) : null;
    }

    /** * Sorts items by descending quality. */
    private function sort(): void
    {
        if (!$this->sorted) {
            uasort($this->items, function DAcceptHeaderItem $a, AcceptHeaderItem $b) {
                $qA = $a->getQuality();
                $qB = $b->getQuality();

                if ($qA === $qB) {
                    return $a->getIndex() > $b->getIndex() ? 1 : -1;
                }

                return $qA > $qB ? -1 : 1;
            });

            $this->sorted = true;
        }
    }

return $this->items ? reset($this->items) : null;
    }

    /** * Sorts items by descending quality. */
    private function sort(): void
    {
        if (!$this->sorted) {
            uasort($this->items, function DAcceptHeaderItem $a, AcceptHeaderItem $b) {
                $qA = $a->getQuality();
                $qB = $b->getQuality();

                if ($qA === $qB) {
                    return $a->getIndex() > $b->getIndex() ? 1 : -1;
                }

                return $qA > $qB ? -1 : 1;
            });

            $this->sorted = true;
        }
    }

$item->setValue('new value');
        $this->assertEquals('new value', $item->getValue());

        $item->setValue(1);
        $this->assertEquals('1', $item->getValue());
    }

    public function testQuality()
    {
        $item = new AcceptHeaderItem('value', []);
        $this->assertEquals(1.0, $item->getQuality());

        $item->setQuality(0.5);
        $this->assertEquals(0.5, $item->getQuality());

        $item->setAttribute('q', 0.75);
        $this->assertEquals(0.75, $item->getQuality());
        $this->assertFalse($item->hasAttribute('q'));
    }

    public function testAttribute()
    {