1 require("../env");

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

     3 

     4 var vows = require("vows"),

     5     assert = require("assert");

     6 

     7 var suite = vows.describe("d3.zip");

     8 

     9 suite.addBatch({

    10   "zip": {

    11     topic: function() {

    12       return d3.zip;

    13     },

    14     "transposes a square matrix": function(zip) {

    15       assert.deepEqual(d3.zip([1, 2], [3, 4]), [[1, 3], [2, 4]]);

    16     },

    17     "transposes a non-square matrix": function(zip) {

    18       assert.deepEqual(d3.zip([1, 2, 3, 4, 5], [2, 4, 6, 8, 10]), [[1, 2], [2, 4], [3, 6], [4, 8], [5, 10]]);

    19     },

    20     "transposes a single-row matrix": function(zip) {

    21       assert.deepEqual(d3.zip([1, 2, 3, 4, 5]), [[1], [2], [3], [4], [5]]);

    22     },

    23     "transposes an empty matrix": function(zip) {

    24       assert.deepEqual(d3.zip(), []);

    25     },

    26     "ignores extra elements given an irregular matrix": function(zip) {

    27       assert.deepEqual(d3.zip([1, 2], [3, 4], [5, 6, 7]), [[1, 3, 5], [2, 4, 6]]);

    28     }

    29   }

    30 });

    31 

    32 suite.export(module);