fix toISOString test to be correct
fix toISOString test to be correct

smelukov/basisjs,tyanas/basisjs,fateevv/basisjs,tyanas/basisjs,istrel/basisjs,fateevv/basisjs,tyanas/basisjs,istrel/basisjs,basisjs/basisjs,smelukov/basisjs,basisjs/basisjs,smelukov/basisjs,basisjs/basisjs,fateevv/basisjs,istrel/basisjs