put create and destroy graph div routine in jasmine tests assets/

Author: etpinard

test/jasmine/assets/create_graph_div.js

@@ -0,0 +1,8 @@
+'use strict';
+
+module.exports = function createGraphDiv() {
+    var gd = document.createElement('div');
+    gd.id = 'graph';
+    document.body.appendChild(gd);
+    return gd;
+};

test/jasmine/assets/destroy_graph_div.js

@@ -0,0 +1,6 @@
+'use strict';
+
+module.exports = function destroyGraphDiv() {
+    var gd = document.getElementById('graph');
+    document.body.removeChild(gd);
+};

test/jasmine/tests/gl_plot_interact_test.js

@@ -2,6 +2,9 @@ var d3 = require('d3');
 
 var Plotly = require('@src/index');
 
+var createGraphDiv = require('../assets/create_graph_div');
+var destroyGraphDiv = require('../assets/destroy_graph_div');
+
 /*
  * WebGL interaction test cases fail on the CircleCI
  * most likely due to a WebGL/driver issue
@@ -12,18 +15,6 @@ var Plotly = require('@src/index');
 describe('Test plot structure', function () {
     'use strict';
 
-    function createGraphDiv() {
-        var gd = document.createElement('div');
-        gd.id = 'graph';
-        document.body.appendChild(gd);
-        return gd;
-    }
-
-    function destroyGraphDiv() {
-        var gd = document.getElementById('graph');
-        document.body.removeChild(gd);
-    }
-
     afterEach(destroyGraphDiv);
 
     describe('gl3d plots', function() {

test/jasmine/tests/plot_interact_test.js

@@ -3,22 +3,13 @@ var d3 = require('d3');
 var Plotly = require('@src/index');
 var Fx = require('@src/plots/cartesian/graph_interact');
 
+var createGraphDiv = require('../assets/create_graph_div');
+var destroyGraphDiv = require('../assets/destroy_graph_div');
+
 
 describe('Test plot structure', function () {
     'use strict';
 
-    function createGraphDiv() {
-        var gd = document.createElement('div');
-        gd.id = 'graph';
-        document.body.appendChild(gd);
-        return gd;
-    }
-
-    function destroyGraphDiv() {
-        var gd = document.getElementById('graph');
-        document.body.removeChild(gd);
-    }
-
     afterEach(destroyGraphDiv);
 
     describe('cartesian plots', function() {