1 require("../env");

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

     3 

     4 var vows = require("vows"),

     5     assert = require("assert");

     6 

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

     8 

     9 suite.addBatch({

    10   "xhr": {

    11     topic: function() {

    12       var cb = this.callback;

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

    14         cb(null, req);

    15       });

    16     },

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

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

    19       assert.isTrue(req._info.async);

    20     },

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

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

    23     },

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

    25       assert.isUndefined(req._info.mimeType);

    26     },

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

    28       assert.equal(req.readyState, 4);

    29       assert.equal(req.status, 200);

    30     },

    31     "": {

    32       topic: function() {

    33         var cb = this.callback;

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

    35           cb(null, req);

    36         });

    37       },

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

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

    40       }

    41     },

    42     " ": {

    43       topic: function() {

    44         var cb = this.callback;

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

    46           cb(null, req);

    47         });

    48       },

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

    50         assert.isNull(req);

    51       }

    52     }

    53   }

    54 });

    55 

    56 suite.export(module);