require("../env");

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

var vows = require("vows"),

    assert = require("assert");

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

suite.addBatch({

  "text": {

    topic: function() {

      var cb = this.callback;

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

        cb(null, text);

      });

    },

    "invokes the callback with the loaded text": function(text) {

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

    },

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

      assert.isUndefined(XMLHttpRequest._last._info.mimeType);

    },

    "": {

      topic: function() {

        var cb = this.callback;

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

          cb(null, text);

        });

      },

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

        assert.equal(XMLHttpRequest._last._info.mimeType, "text/plain+sample");

      }

    },

    " ": {

      topic: function() {

        var cb = this.callback;

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

          cb(null, text);

        });

      },

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

        assert.isNull(text);

      }

    }

  }

});

suite.export(module);