var vows = require(“vows”),

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

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

suite.addBatch({

"merge": {
  topic: load("arrays/merge").expression("d3.merge"),
  "merges an array of arrays": function(merge) {
    var a = {}, b = {}, c = {}, d = {}, e = {}, f = {};
    assert.deepEqual(merge([[a], [b, c], [d, e, f]]), [a, b, c, d, e, f]);
  },
  "returns a new array": function(merge) {
    var input = [[1, 2, 3], [4, 5], [6]];
    assert.isFalse(merge(input) === input);
  },
  "does not modify the input arrays": function(merge) {
    var input = [[1, 2, 3], [4, 5], [6]];
    merge(input);
    assert.deepEqual(input, [[1, 2, 3], [4, 5], [6]]);
  }
}

});

suite.export(module);