fix(resource): use initial params for subsequent iteration requests (#34)

Author: spirosikmd

src/resources/resource.js

@@ -12,6 +12,7 @@ class Resource {
     this.signatureFactory = signatureFactory;
     this.config = config;
     this.str = '';
+    this.queryParams = {};
   }
 
   handleOnData(newJsonString) {
@@ -27,7 +28,10 @@ class Resource {
     this._results = this._results.concat(this.answer.items);
 
     if (this.answer.hasMore && this.config.iterator) {
-      this._query = Object.assign(this._query, {params: {since: this.answer.lastTimestamp}});
+      // Delete since to be replaced by since of new answer
+      delete this.queryParams.since;
+      const params = Object.assign({}, {since: this.answer.lastTimestamp}, this.queryParams);
+      this._query = Object.assign(this._query, {params});
       this.get(this._query, this._results).then((results) => {
         resolve(results);
       });
@@ -62,6 +66,7 @@ class Resource {
   get(query, results) {
     this._query = query || {};
     this._results = results || [];
+    this.queryParams = this._query.params || {};
 
     this.signatureFactory.setUrl(this.url);
     this.signatureFactory.setHeaders(Resource.getDefaultHeaders(packageJson.version));

test/resources/resource.spec.js

@@ -67,15 +67,20 @@ describe('Resource', function() {
     it('calls get with query and updated results if hasMore and iterator is true', function() {
       this.resource._results = [{id: 'foo'}];
       this.resource._query = {
-        baz: 'bax'
+        id: 'foo',
+        params: {
+          limit: 10,
+        }
       };
+      this.resource.queryParams = {limit: 10};
       this.resource.config.iterator = true;
       this.resource.str = '{"items": [{"id": "bar"}], "hasMore": true, "lastTimestamp": 1}';
       spyOn(this.resource, 'get').and.returnValue(Promise.resolve());
       this.resource.handleOnEnd(this.spies.resolve, this.spies.reject);
       expect(this.resource.get).toHaveBeenCalledWith({
-        baz: 'bax',
+        id: 'foo',
         params: {
+          limit: 10,
           since: 1
         }
       }, [{id: 'foo'}, {id: 'bar'}]);