require("../env");

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

var vows = require("vows"),

assert = require("assert");

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

suite.addBatch({

"merge": {

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

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

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

},

"returns a new array": function() {

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

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

},

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

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

d3.merge(input);

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

}

}

});

suite.export(module);