1 require("../env");

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

     3 

     4 var vows = require("vows"),

     5     assert = require("assert");

     6 

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

     8 

     9 suite.addBatch({

    10   "merge": {

    11     "merges an array of arrays": function() {

    12       var a = {}, b = {}, c = {}, d = {}, e = {}, f = {};

    13       assert.deepEqual(d3.merge([[a], [b, c], [d, e, f]]), [a, b, c, d, e, f]);

    14     },

    15     "returns a new array": function() {

    16       var input = [[1, 2, 3], [4, 5], [6]];

    17       assert.isFalse(d3.merge(input) === input);

    18     },

    19     "does not modify the input arrays": function() {

    20       var input = [[1, 2, 3], [4, 5], [6]];

    21       d3.merge(input);

    22       assert.deepEqual(input, [[1, 2, 3], [4, 5], [6]]);

    23     }

    24   }

    25 });

    26 

    27 suite.export(module);