var vows = require(“vows”),

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

var suite = vows.describe(“d3.functor”);

suite.addBatch({

"functor": {
  topic: load("core/functor").expression("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);