require("../env");

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

var vows = require("vows"),

    assert = require("assert");

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

suite.addBatch({

  "functor": {

    topic: function() {

      return d3.functor;

    },

    "when passed a function, returns the function": function(functor) {

      function foo() {}

      assert.strictEqual(functor(foo), foo);

    },

    "when passed a non-function, returns a wrapper function": function(functor) {

      var a = {};

      assert.isNull(functor(null)());

      assert.isUndefined(functor(undefined)());

      assert.strictEqual(functor(a)(), a);

      assert.strictEqual(functor(1)(), 1);

      assert.deepEqual(functor([1])(), [1]);

    }

  }

});

suite.export(module);