add unit test
add unit test

apache/libcloud,ByteInternet/libcloud,pquentin/libcloud,Kami/libcloud,mgogoulos/libcloud,andrewsomething/libcloud,StackPointCloud/libcloud,ByteInternet/libcloud,Kami/libcloud,ZuluPro/libcloud,Scalr/libcloud,SecurityCompass/libcloud,illfelder/libcloud,Scalr/libcloud,pquentin/libcloud,apache/libcloud,illfelder/libcloud,mgogoulos/libcloud,watermelo/libcloud,t-tran/libcloud,pquentin/libcloud,samuelchong/libcloud,samuelchong/libcloud,vongazman/libcloud,samuelchong/libcloud,SecurityCompass/libcloud,Scalr/libcloud,t-tran/libcloud,ByteInternet/libcloud,vongazman/libcloud,t-tran/libcloud,erjohnso/libcloud,techhat/libcloud,StackPointCloud/libcloud,apache/libcloud,andrewsomething/libcloud,techhat/libcloud,SecurityCompass/libcloud,StackPointCloud/libcloud,ZuluPro/libcloud,mistio/libcloud,illfelder/libcloud,mgogoulos/libcloud,erjohnso/libcloud,techhat/libcloud,mistio/libcloud,mistio/libcloud,ZuluPro/libcloud,andrewsomething/libcloud,Kami/libcloud,watermelo/libcloud,vongazman/libcloud,erjohnso/libcloud,watermelo/libcloud