var vows = require(“vows”),

load = require("../load"),
assert = require("../assert");

var suite = vows.describe(“d3.xml”);

suite.addBatch({

"xml": {
  topic: load("xhr/xml").expression("d3.xml").document(),

  "on a sample file": {
    topic: function(xml) {
      xml("test/data/sample.xml", this.callback);
    },
    "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);
    }
  },

  "with a custom mime type": {
    topic: function(xml) {
      xml("test/data/sample.txt", "application/xml+sample", this.callback);
    },
    "observes the optional mime type": function(xml) {
      assert.equal(XMLHttpRequest._last._info.mimeType, "application/xml+sample");
    }
  },

  "on a file that does not exist": {
    topic: function(xml) {
      var callback = this.callback;
      xml("//does/not/exist.xml", function(error, xml) {
        callback(null, xml);
      });
    },
    "invokes the callback with undefined when an error occurs": function(xml) {
      assert.isUndefined(xml);
    }
  }
}

});

suite.export(module);