require("../env");

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

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

var vows = require("vows"),

    assert = require("assert");

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

suite.addBatch({

  "csv": {

    topic: function() {

      var cb = this.callback;

      return d3.csv("examples/data/sample.csv", function(csv) {

        cb(null, csv);

      });

    },

    "invokes the callback with the parsed CSV": function(csv) {

      assert.deepEqual(csv, [{"Hello":42,"World":"\"fish\""}]);

    },

    "overrides the mime type to text/csv": function(csv) {

      assert.equal(XMLHttpRequest._last._info.mimeType, "text/csv");

    },

    "": {

      topic: function() {

        var cb = this.callback;

        return d3.csv("//does/not/exist.csv", function(csv) {

          cb(null, csv);

        });

      },

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

        assert.isNull(csv);

      }

    }

  }

});

suite.export(module);