replace $.extend(true, , ) with clone in plotlyjs tests

Author: etpinard

shelly/plotlyjs/static/plotlyjs/tests/axes_test.js

@@ -1,4 +1,5 @@
 var Plotly = require('../src/plotly');
+var clone = require('clone');
 
 describe('Test axes', function () {
     'use strict';
@@ -27,7 +28,7 @@ describe('Test axes', function () {
                     }
                 }
             };
-            var expectedYaxis = $.extend(true, {}, gd.layout.xaxis),
+            var expectedYaxis = clone(gd.layout.xaxis),
                 expectedXaxis = {
                     title: 'Click to enter X axis title',
                     type: 'date'
@@ -60,7 +61,7 @@ describe('Test axes', function () {
                     }
                 }
             };
-            var expectedLayoutAfter = $.extend(true, {}, gd.layout);
+            var expectedLayoutAfter = clone(gd.layout);
             expectedLayoutAfter.xaxis.type = 'linear';
             expectedLayoutAfter.yaxis.type = 'linear';
 

shelly/plotlyjs/static/plotlyjs/tests/graph_obj_test.js

@@ -1,4 +1,5 @@
 var Plotly = require('../src/plotly');
+var clone = require('clone');
 
 describe('Test graph_obj', function () {
     'use strict';
@@ -562,7 +563,7 @@ describe('Test graph_obj', function () {
         });
 
         it('prepend is the inverse of extend - no maxPoints', function () {
-            var cachedData = $.extend(true, [], gd.data);
+            var cachedData = clone(gd.data);
 
             Plotly.extendTraces(gd, {
                 x: [[3, 4], [4, 5]], 'marker.size': [[0, -1], [5, 6]]
@@ -580,7 +581,7 @@ describe('Test graph_obj', function () {
 
 
         it('extend is the inverse of prepend - no maxPoints', function () {
-            var cachedData = $.extend(true, [], gd.data);
+            var cachedData = clone(gd.data);
 
             Plotly.prependTraces(gd, {
                 x: [[3, 4], [4, 5]], 'marker.size': [[0, -1], [5, 6]]
@@ -599,7 +600,7 @@ describe('Test graph_obj', function () {
 
         it('prepend is the inverse of extend - with maxPoints', function () {
             var maxPoints = 3;
-            var cachedData = $.extend(true, [], gd.data);
+            var cachedData = clone(gd.data);
 
             Plotly.extendTraces(gd, {
                 x: [[3, 4], [4, 5]], 'marker.size': [[0, -1], [5, 6]]