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test/specs/utils/deepMerge.spec.js
var deepMerge = require('../../../lib/utils').deepMerge;
describe('utils::deepMerge', function () {
  it('should be immutable', function () {
    var a = {};
    var b = {foo: 123};
    var c = {bar: 456};
    deepMerge(a, b, c);
    expect(typeof a.foo).toEqual('undefined');
    expect(typeof a.bar).toEqual('undefined');
    expect(typeof b.bar).toEqual('undefined');
    expect(typeof c.foo).toEqual('undefined');
  });
  it('should deepMerge properties', function () {
    var a = {foo: 123};
    var b = {bar: 456};
    var c = {foo: 789};
    var d = deepMerge(a, b, c);
    expect(d.foo).toEqual(789);
    expect(d.bar).toEqual(456);
  });
  it('should deepMerge recursively', function () {
    var a = {foo: {bar: 123}};
    var b = {foo: {baz: 456}, bar: {qux: null}};
    expect(deepMerge(a, b)).toEqual({