added new endpoint to retrieve for retrieving step data

Author: pnedelko

lib/resource.js

@@ -71,7 +71,7 @@ ApiResource.method = function method(spec) {
 
         function provideOptions() {
             if (!path) {
-                throw new Error("A resource mus define 'path'");
+                throw new Error("A resource must define 'path'");
             }
 
             if (spec.path) {

lib/resources/tasks.js

@@ -21,5 +21,10 @@ module.exports = Resource.extend({
     delete: Resource.method({
         method: Resource.DELETE,
         path: '/{id}'
+    }),
+
+    retrieveStep: Resource.method({
+        method: Resource.GET,
+        path: '/{id}/steps/{stepId}'
     })
 });

spec/resources/tasks.spec.js

@@ -166,4 +166,30 @@ describe('/tasks', function () {
 
         });
     });
+
+    describe('/{id}/steps', function() {
+        describe('/{stepId}', function() {
+            it('should send request successfully', function (done) {
+                var response = {
+                    'id': 'step_1',
+                    'comp_id': 'comp_1'
+                };
+
+                nock('https://api.elastic.io')
+                    .get('/v1/tasks/54f4be3fe7d5224f91000001/steps/step_1')
+                    .basicAuth({
+                        user: 'root',
+                        pass: 'secret'
+                    })
+                    .reply(200, response);
+
+                tasks.retrieveStep('54f4be3fe7d5224f91000001', 'step_1')
+                    .then(function (result) {
+                        expect(result).toEqual(response);
+                    })
+                    .then(done)
+                    .catch(done.fail);
+            });
+        });
+    });
 });