added unit tests for Params methods
added unit tests for Params methods

poolio/thunder,zhwa/thunder,broxtronix/thunder,zhwa/thunder,oliverhuangchao/thunder,kunallillaney/thunder,j-friedrich/thunder,pearsonlab/thunder,mikarubi/thunder,mikarubi/thunder,broxtronix/thunder,thunder-project/thunder,j-friedrich/thunder,oliverhuangchao/thunder,kunallillaney/thunder,kcompher/thunder,jwittenbach/thunder,pearsonlab/thunder,kcompher/thunder,poolio/thunder