diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/test/core/xml-test.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/test/core/xml-test.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,48 @@
+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("d3.xml");
+
+suite.addBatch({
+  "xml": {
+    topic: function() {
+      var cb = this.callback;
+      return d3.xml("examples/data/sample.xml", function(xml) {
+        cb(null, xml);
+      });
+    },
+    "invokes the callback with the loaded xml": function(xml) {
+      assert.deepEqual(xml, {_xml: "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n<hello>\n  <world name=\"Earth\"/>\n</hello>\n"});
+    },
+    "does not override the mime type by default": function(xml) {
+      assert.isUndefined(XMLHttpRequest._last._info.mimeType);
+    },
+    "": {
+      topic: function() {
+        var cb = this.callback;
+        return d3.xml("examples/data/sample.txt", "application/xml+sample", function(xml) {
+          cb(null, xml);
+        });
+      },
+      "observes the optional mime type": function(xml) {
+        assert.equal(XMLHttpRequest._last._info.mimeType, "application/xml+sample");
+      }
+    },
+    " ": {
+      topic: function() {
+        var cb = this.callback;
+        return d3.xml("//does/not/exist.xml", function(xml) {
+          cb(null, xml);
+        });
+      },
+      "invokes the callback with null when an error occurs": function(xml) {
+        assert.isNull(xml);
+      }
+    }
+  }
+});
+
+suite.export(module);