public function test_set_alternate_languages()
{
$fullHeader = "<title>It's Over 9000!</title>";
$fullHeader .= "<meta name=\"description\" content=\"For those who helped create the Genki Dama\">";
$fullHeader .= "<link rel=\"alternate\" hreflang=\"en\" href=\"http://domain.com\"/>";
$lang = 'en';
$langUrl = 'http://domain.com';
$expectedLangs = [['lang' => $lang, 'url' => $langUrl]];
$this->seoMeta->addAlternateLanguage($lang, $langUrl);
$this->setRightAssertion($fullHeader);
$this->assertEquals($expectedLangs, $this->seoMeta->getAlternateLanguages());
$this->seoMeta->addAlternateLanguages($expectedLangs);
$this->assertEquals(array_merge($expectedLangs, $expectedLangs), $this->seoMeta->getAlternateLanguages());
}