MAGETWO-72085: Allow browser back/forward button to shipping step #10698

Author: omiroshnichenko

app/code/Magento/Checkout/view/frontend/web/js/model/step-navigator.js

@@ -47,7 +47,7 @@ define([
 
             steps.sort(this.sortItems).forEach(function (element) {
                 if (element.code == hashString || element.alias == hashString) { //eslint-disable-line eqeqeq
-                    element.navigate();
+                    element.navigate(element);
                 } else {
                     element.isVisible(false);
                 }

app/code/Magento/Checkout/view/frontend/web/js/view/shipping.js

@@ -126,8 +126,13 @@ define([
             return this;
         },
 
-        navigate: function () {
-            this.isVisible(true);
+        /**
+         * Navigator change hash handler.
+         *
+         * @param {Object} step - navigation step
+         */
+        navigate: function (step) {
+            step && step.isVisible(true);
         },
 
         /**

dev/tests/js/jasmine/tests/app/code/Magento/Checkout/frontend/js/view/shipping.test.js

@@ -80,7 +80,12 @@ define(['squire', 'ko', 'jquery', 'jquery/validate'], function (Squire, ko, $) {
     describe('Magento_Checkout/js/view/shipping', function () {
         describe('"navigate" method', function () {
             it('Check for return value.', function () {
-                expect(obj.navigate()).toBeUndefined();
+                var step = {
+                    isVisible: ko.observable(false)
+                };
+
+                expect(obj.navigate(step)).toBeUndefined();
+                expect(step.isVisible()).toBe(true);
             });
         });