require("../env");

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

var vows = require("vows"),

    assert = require("assert");

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

suite.addBatch({

  "entries": {

    topic: function() {

      return d3.entries;

    },

    "enumerates every entry": function(entries) {

      assert.deepEqual(entries({a: 1, b: 2}), [

        {key: "a", value: 1},

        {key: "b", value: 2}

      ]);

    },

    "includes entries defined on prototypes": function(entries) {

      function abc() {

        this.a = 1;

        this.b = 2;

      }

      abc.prototype.c = 3;

      assert.deepEqual(entries(new abc()), [

        {key: "a", value: 1},

        {key: "b", value: 2},

        {key: "c", value: 3}

      ]);

    },

    "includes null or undefined values": function(entries) {

      var v = entries({a: undefined, b: null, c: NaN});

      assert.equal(v.length, 3);

      assert.deepEqual(v[0], {key: "a", value: undefined});

      assert.deepEqual(v[1], {key: "b", value: null});

      assert.equal(v[2].key, "c");

      assert.isNaN(v[2].value);

    }

  }

});

suite.export(module);