JpnForPhp\Tests\Helper\HelperTest::testConvertHiraganaToKatakanaWhenHiragana PHP Method

    public function testConvertHiraganaToKatakanaWhenHiragana()
    {
        $result = Helper::convertHiraganaToKatakana($this->hiraganaCharacters);
        $this->assertEquals('ヒラガナ', $result);
    }