add test for SemRush::getWidgetUrl
add test for SemRush::getWidgetUrl

eyecatchup/SEOstats,WebsterFolksLabs/SEOstats,jslyonnais/SEOstats,MurgaNikolay/SEOstats,jslyonnais/SEOstats,MurgaNikolay/SEOstats,WebsterFolksLabs/SEOstats,hslatman/SEOstats,hslatman/SEOstats