var vows = require(“vows”),

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

var suite = vows.describe(“d3.json”);

suite.addBatch({

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

  "on a sample file": {
    topic: function(json) {
      json("test/data/sample.json", this.callback);
    },
    "invokes the callback with the loaded JSON": function(json) {
      assert.deepEqual(json, [{"Hello":42,"World":"\"fish\""}]);
    },
    "overrides the mime type to application/json": function(json) {
      assert.equal(XMLHttpRequest._last._info.mimeType, "application/json");
    }
  },

  "on a file that does not exist": {
    topic: function(json) {
      var callback = this.callback;
      json("//does/not/exist.json", function(error, json) {
        callback(null, {error: error, value: json});
      });
    },
    "invokes the callback with undefined when an error occurs": function(result) {
      assert.equal(result.error.status, 404);
      assert.isUndefined(result.value);
    }
  },

  "on a file with invalid JSON": {
    topic: function(json) {
      var callback = this.callback;
      json("test/data/sample.tsv", function(error, json) {
        callback(null, {error: error, value: json});
      });
    },
    "invokes the callback with undefined when an error occurs": function(result) {
      assert.equal(result.error.constructor.name, "SyntaxError");
      assert.isUndefined(result.value);
    }
  }
}

});

suite.export(module);