text: define("d3/test/arrays/mean-test", ["dojo","dijit","dojox"], function(dojo,dijit,dojox){
  var vows = require("vows"),
      load = require("../load"),
      assert = require("../assert"),
      OneTimeNumber = require("./one-time-number");
  
  var suite = vows.describe("d3.mean");
  
  suite.addBatch({
    "mean": {
      topic: load("arrays/mean").expression("d3.mean"),
      "returns the mean value for numbers": function(mean) {
        assert.equal(mean([1]), 1);
        assert.equal(mean([5, 1, 2, 3, 4]), 3);
        assert.equal(mean([20, 3]), 11.5);
        assert.equal(mean([3, 20]), 11.5);
      },
      "ignores null, undefined and NaN": function(mean) {
        assert.equal(mean([NaN, 1, 2, 3, 4, 5]), 3);
        assert.equal(mean([1, 2, 3, 4, 5, NaN]), 3);
        assert.equal(mean([10, null, 3, undefined, 5, NaN]), 6);
      },
      "returns undefined for empty array": function(mean) {
        assert.isUndefined(mean([]));
        assert.isUndefined(mean([null]));
        assert.isUndefined(mean([undefined]));
        assert.isUndefined(mean([NaN]));
        assert.isUndefined(mean([NaN, NaN]));
      },
      "applies the optional accessor function": function(mean) {
        assert.equal(mean([[1, 2, 3, 4, 5], [2, 4, 6, 8, 10]], function(d) { return mean(d); }), 4.5);
        assert.equal(mean([1, 2, 3, 4, 5], function(d, i) { return i; }), 2);
      },
      "coerces values to numbers": function(mean) {
        assert.equal(mean(["1"]), 1);
        assert.equal(mean(["5", "1", "2", "3", "4"]), 3);
        assert.equal(mean(["20", "3"]), 11.5);
        assert.equal(mean(["3", "20"]), 11.5);
      },
      "coerces values exactly once": function(mean) {
        var array = [1, new OneTimeNumber(3)];
        assert.equal(mean(array), 2);
        assert.equal(mean(array), 1);
      }
    }
  });
  
  suite.export(module);
  });
  