message: test(navigation): add missing test for new method
diff: @@ -25,7 +25,7 @@ const NAV_ITEMS_MOCK: TsNavigationItem[] = [
  {
  name: 'NAV_ITEM_FOUR',
  destination: ['/foo/bar/baz/bing'],
  - alwaysHidden: true,
  + alwaysHidden: false,
  isDisabled: true,
  },
  ];
  @@ -256,4 +256,23 @@ describe(`TsNavigationComponent`, () => {
  });
  +
  + describe(`isExternalLink()`, () => {
  +
  + it(`should return true if the destination is a string to an external link`, () => {
  + expect(this.component.isExternalLink('http://google.com')).toEqual(true);
  + });
  +
  +
  + it(`should return false if the destination doesn't begin with http`, () => {
  + expect(this.component.isExternalLink('foo/bar')).toEqual(false);
  + });
  +
  +
  + it(`should return false if the destination is an array`, () => {
  + expect(this.component.isExternalLink(['foo', '/bar'])).toEqual(false);
  + });
  +
  + });
  +
  });
  