Add tests to ensure Log returns false if no Logger set
Add tests to ensure Log returns false if no Logger set

lcp0578/Slim,EhteshamMehmood/Slim,xiuchanghu/Slim,somjit2514/basic,abfadel/Slim,ColourboxDevelopment/Slim,samsonasik/Slim,iinux/Slim,gencer/Slim,fsciuti/Slim,fredemmott/Slim,mnapoli/Slim,jaapverloop/Slim,asaokamei/Slim,nslod/Slim,dopesong/Slim,xMolchy/Slim,mmauri04/Slim,1nv4d3r5/Slim,iinux/Slim,tempbottle/Slim,AI0day/slim,iinux/Slim,jeremykendall/Slim,kanellov/Slim,zither/Slim,danielgsims/Slim,epd/backbone-rest-boilerplate,prashantquestionpro/Slim,opengeek/Slim,epd/backbone-rest-boilerplate,juliangut/Slim,gabriel403/Slim,cesarmarinhorj/Slim,Alex2147483647/Slim,geggleto/Slim,taohaolong/Slim,luizdeangeli/Slim,FraGoTe/Slim,moufmouf/Slim,huang53798584/Slim,shameerc/Slim,silentworks/Slim,slimphp/Slim,Vinniefern99/Slim,kutanari/Slim,Sam-Burns/Slim,dkarvounaris/Slim,designermonkey/Slim,JoeBengalen/Slim,andresvidal/Slim,bact197736/Slim,lornajane/Slim,swantrace/Slim-1,umiyosh/SlimDocDemo,AndrewCarterUK/Slim,jenalgit/Slim,julianromera/Slim,anuradhaedirisuriya/Slim,chezzy/Slim,RealSelf/Slim,pine3ree/Slim,foxyantho/Slim,lmcro/Slim,greevex/Slim,tanuck/Slim,akrabat/Slim,pedro2555/Slim,matheusgomes17/Slim,beealone/Slim,makelivedotnet/Slim,lekoaf/Slim,umiyosh/SlimDocDemo,feryardiant/slim,joelgarciajr84/Slim,szulilin/Slim