Added unit test

Author: Gabriel Galvao da Gama

app/code/Magento/Customer/view/frontend/web/js/customer-data.js

@@ -358,6 +358,25 @@ define([
             return deferred.promise();
         },
 
+        onAjaxComplete: function(event, xhr, settings) {
+            var sections,
+                redirects;
+
+            if (settings.type.match(/post|put|delete/i)) {
+                sections = sectionConfig.getAffectedSections(settings.url);
+
+                if (sections && sections.length) {
+                    this.invalidate(sections);
+                    redirects = ['redirect', 'backUrl'];
+
+                    if (_.isObject(xhr.responseJSON) && !_.isEmpty(_.pick(xhr.responseJSON, redirects))) { //eslint-disable-line
+                        return;
+                    }
+                    this.reload(sections, true);
+                }
+            }
+        },
+
         /**
          * @param {Object} settings
          * @constructor
@@ -376,22 +395,7 @@ define([
      * Events listener
      */
     $(document).on('ajaxComplete', function (event, xhr, settings) {
-        var sections,
-            redirects;
-
-        if (settings.type.match(/post|put|delete/i)) {
-            sections = sectionConfig.getAffectedSections(settings.url);
-
-            if (sections && sections.length) {
-                customerData.invalidate(sections);
-                redirects = ['redirect', 'backUrl'];
-
-                if (_.isObject(xhr.responseJSON) && !_.isEmpty(_.pick(xhr.responseJSON, redirects))) { //eslint-disable-line
-                    return;
-                }
-                customerData.reload(sections, true);
-            }
-        }
+        customerData.onAjaxComplete(event, xhr, settings);
     });
 
     /**

dev/tests/js/jasmine/tests/app/code/Magento/Customer/frontend/js/customer-data.test.js

@@ -510,6 +510,23 @@ define([
             });
         });
 
+        describe('"onAjaxComplete" method', function () {
+            it('Should not trigger reload if sections is empty', function () {
+                var event, xhr, settings;
+
+                event = jasmine.createSpy().and.returnValue($.event);
+                xhr = jasmine.createSpy();
+                spyOn(sectionConfig, 'getAffectedSections').and.returnValue([]);
+                spyOn(obj, 'reload');
+                settings = {
+                    type: "POST",
+                    url: "http://test.local"
+                };
+                obj.onAjaxComplete(event, xhr, settings);
+                expect(obj.reload).not.toHaveBeenCalled();
+            });
+        });
+
         describe('"Magento_Customer/js/customer-data" method', function () {
             it('Should be defined', function () {
                 expect(obj.hasOwnProperty('Magento_Customer/js/customer-data')).toBeDefined();