Removes duplicate method and make changes to simplify testing

Author: gcollazo

lib/index.js

@@ -9,6 +9,7 @@ FilePreviews = function(options) {
   this.debug = options.debug || false;
   this.apiKey = options.apiKey;
   this.apiSecret = options.apiSecret;
+  this._request = request;
 
   if (!this.apiKey) {
     throw new Error('Missing required apiKey.');
@@ -27,19 +28,6 @@ FilePreviews.prototype.log = function(msg) {
   return this;
 };
 
-FilePreviews.prototype.generate = function(url, options, callback) {
-  if (arguments.length === 2) {
-    if (Object.prototype.toString.call(options) === '[object Function]') {
-      callback = options;
-    }
-  }
-
-  this.submitJobToAPI(url, options, function(err, result) {
-    callback(err, result);
-    this._log('Processing done :)');
-  }.bind(this));
-};
-
 FilePreviews.prototype.generate = function(url, options, callback) {
   if (arguments.length === 2) {
     if (Object.prototype.toString.call(options) === '[object Function]') {
@@ -109,7 +97,7 @@ FilePreviews.prototype.request = function(url, options, callback) {
 
   this.log('API request to: ' + url);
 
-  request(requestOptions, function (error, response, body) {
+  this._request(requestOptions, function(error, response, body) {
     if (error) {
       onError(error, response, body);
     } else {
@@ -143,6 +131,7 @@ FilePreviews.prototype.getAPIRequestData = function(url, options) {
         size = size + 'x' + options.size.height;
       }
 
+      delete options.size;
       options.sizes = [size];
     }
   }