Test with [undefined] as parameters

[brody4hire]

driftyco/ionic2#770 which referenced #393 was fixed as follows in Ionic2 Typescript:

--- a/ionic/platform/storage/sql.ts
+++ b/ionic/platform/storage/sql.ts
@@ -96,7 +96,7 @@ export class SqlStorage extends StorageEngine {
    * @param {array} params the additional params to use for query placeholders
    * @return {Promise} that resolves or rejects with an object of the form { tx: Transaction, res: Result (or err)}
    */
-  query(query, ...params) {
+  query(query, params=[]) {
     return new Promise((resolve, reject) => {
       try {
         this._db.transaction((tx) => {

According to https://github.com/driftyco/ionic2/issues/770#issuecomment-165568393:

Looks like the underlying implementation is really sensitive about the number of arguments in the params array, and using ...params created an array with one undefined item: [undefined] when it should have been empty.

The plugin should handle this case by either treating it as an empty parameters array, i.e. [], or throwing an exception, and the behavior should be the same for all target platforms. I will add a test for this when I get a chance.