javascript - R2D3's QUnit tests fail out of the box - what am I doing wrong? -

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i've checked out r2d3 github, , want run tests. new repo, , not expert on js testing, think correct way @ tests/index.html in web browser, , see whether qunit tests pass.

however, when try this, 41 out of 52 tests fail straight out of box (in chrome, firefox , safari on osx):

enter image description here

i can see developer tools files loading correctly, isn't path wrong. looking @ code suggests .append() failing. first 2 errors @ line 16 in tests/core/append-tests.js: var el = svg.append('image') , line 20: var el = svg.append('line').

tracing problem back root in r2d3.v2.js, seems these 2 functions problem: 

raphael.fn.appendchild = function(childnode) {   var node = this.buildelement(childnode);   if (node) {     this.shadowdom.appendchild(childnode);     node.updatestyle(); //  apply css styles   }   return node; }; raphael.fn.buildelement = function(childnode) {   var type = childnode && childnode.nodename,       node =  type ? this[type.tolowercase()]() : null;    if (node) {     // ensure paper can referenced sets     node.shadowdom = childnode     node.parentnode = this;     // link shadowdom node raphael id.     node.shadowdom.r2d3 = true;     node.shadowdom.r2d3id = r2d3uid();     node.paper = this;     node.tagname = type.tolowercase();         node.style = new elementstyle(node);      r2d3elements[node.shadowdom.r2d3id] = node;   }   return node; }

however, ability debug goes no further. can suggest might going wrong?

looks running qunit tests chrome. r2d3 built ie only.


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