JpnForPhp\Tests\Helper\HelperTest::testExtractKatakanaWhenKatakanaOnly PHP 메소드

    public function testExtractKatakanaWhenKatakanaOnly()
    {
        $result = Helper::extractKatakana($this->katakanaCharacters);
        $this->assertSame(array('カタカナ'), $result);
    }