plotly · etpinard · Aug 17, 2018 · Aug 17, 2018 · Aug 17, 2018 · Aug 17, 2018
diff --git a/test/jasmine/assets/custom_matchers.js b/test/jasmine/assets/custom_matchers.js
@@ -34,7 +34,7 @@ var matchers = {
             var i;
             if(Array.isArray(x)) {
                 for(i = 0; i < x.length; i++) {
-                    x[i] = x[i];
+                    if(x[i] === undefined) x[i] = undefined;
 // toEqual except with sparse arrays populated. This arises because: 
 // 
 //   var x = new Array(2) 
 //   expect(x).toEqual([undefined, undefined]) 
 // 
 // will fail assertion even though x[0] === undefined and x[1] === undefined. 
 // This is because the array elements don't exist until assigned. Of course it 
 // only fails on *some* platforms (old firefox, looking at you), which is why 
 // this is worth all the footwork. 
 toLooseDeepEqual: function() { 
     function populateUndefinedArrayEls(x) { 
         var i; 
         if(Array.isArray(x)) { 
             for(i = 0; i < x.length; i++) { 
                 if(x[i] === undefined) x[i] = undefined; 
             } 
         } else if(isPlainObject(x)) { 
             var keys = Object.keys(x); 
             for(i = 0; i < keys.length; i++) { 
                 populateUndefinedArrayEls(x[keys[i]]); 
             } 
         } 
         return x; 
     } 
 // toEqual except with sparse arrays populated. This arises because: 
 // 
 //   var x = new Array(2) 
 //   expect(x).toEqual([undefined, undefined]) 
 // 
 // will fail assertion even though x[0] === undefined and x[1] === undefined. 
 // This is because the array elements don't exist until assigned. Of course it 
 // only fails on *some* platforms (old firefox, looking at you), which is why 
 // this is worth all the footwork. 
 toLooseDeepEqual: function() { 
     function populateUndefinedArrayEls(x) { 
         var i; 
         if(Array.isArray(x)) { 
             for(i = 0; i < x.length; i++) { 
                 if(x[i] === undefined) x[i] = undefined; 
             } 
         } else if(isPlainObject(x)) { 
             var keys = Object.keys(x); 
             for(i = 0; i < keys.length; i++) { 
                 populateUndefinedArrayEls(x[keys[i]]); 
             } 
         } 
         return x; 
     } 
                 }
             } else if(isPlainObject(x)) {
                 var keys = Object.keys(x);