require("../env");

require("../../d3");

var vows = require("vows"),

    assert = require("assert");

var suite = vows.describe("d3.xhr");

suite.addBatch({

  "xhr": {

    topic: function() {

      var cb = this.callback;

      return d3.xhr("examples/data/sample.txt", function(req) {

        cb(null, req);

      });

    },

    "makes an asynchronous HTTP request": function(req) {

      assert.equal(req._info.url, "examples/data/sample.txt");

      assert.isTrue(req._info.async);

    },

    "invokes the callback with the request object": function(req) {

      assert.equal(req.responseText, "Hello, world!\n");

    },

    "does not override the mime type by default": function(req) {

      assert.isUndefined(req._info.mimeType);

    },

    "waits until the request is done": function(req) {

      assert.equal(req.readyState, 4);

      assert.equal(req.status, 200);

    },

    "": {

      topic: function() {

        var cb = this.callback;

        return d3.xhr("examples/data/sample.txt", "text/plain", function(req) {

          cb(null, req);

        });

      },

      "observes the optional mime type": function(req) {

        assert.equal(req._info.mimeType, "text/plain");

      }

    },

    " ": {

      topic: function() {

        var cb = this.callback;

        return d3.xhr("//does/not/exist.txt", function(req) {

          cb(null, req);

        });

      },

      "invokes the callback with null when an error occurs": function(req) {

        assert.isNull(req);

      }

    }

  }

});

suite.export(module);