it('validates options', function () {
var options = { };
(function() {
let p = sms.send(options);
}).should.throw();
options.to = "+254718769882";
options.from = null;
options.message = null;
(function() {
let p = sms.send(options);
}).should.throw();
options.enqueue = "Joe";
(function() {
let p = sms.sendBulk(options);
}).should.throw();
(function() {
let p = sms.sendPremium(options);
}).should.throw();
let p = sms.fetchMessages(options);
validate.isPromise(p).should.be.exactly(true);
(function() {
let p = sms.createSubscription(options);
}).should.throw();
(function() {
let p = sms.fetchSubscription(options);
}).should.throw();
});