require('~/lib/utils/bootstrap_linked_tabs');

(() => {
  // TODO: remove this hack!
  // PhantomJS causes spyOn to panic because replaceState isn't "writable"
  let phantomjs;
  try {
    phantomjs = !Object.getOwnPropertyDescriptor(window.history, 'replaceState').writable;
  } catch (err) {
    phantomjs = false;
  }

  describe('Linked Tabs', () => {
    preloadFixtures('static/linked_tabs.html.raw');

    beforeEach(() => {
      loadFixtures('static/linked_tabs.html.raw');
    });

    describe('when is initialized', () => {
      beforeEach(() => {
        if (!phantomjs) {
          spyOn(window.history, 'replaceState').and.callFake(function () {});
        }
      });

      it('should activate the tab correspondent to the given action', () => {
        const linkedTabs = new window.gl.LinkedTabs({ // eslint-disable-line
          action: 'tab1',
          defaultAction: 'tab1',
          parentEl: '.linked-tabs',
        });

        expect(document.querySelector('#tab1').classList).toContain('active');
      });

      it('should active the default tab action when the action is show', () => {
        const linkedTabs = new window.gl.LinkedTabs({ // eslint-disable-line
          action: 'show',
          defaultAction: 'tab1',
          parentEl: '.linked-tabs',
        });

        expect(document.querySelector('#tab1').classList).toContain('active');
      });
    });

    describe('on click', () => {
      it('should change the url according to the clicked tab', () => {
        const historySpy = !phantomjs && spyOn(history, 'replaceState').and.callFake(() => {});

        const linkedTabs = new window.gl.LinkedTabs({ // eslint-disable-line
          action: 'show',
          defaultAction: 'tab1',
          parentEl: '.linked-tabs',
        });

        const secondTab = document.querySelector('.linked-tabs li:nth-child(2) a');
        const newState = secondTab.getAttribute('href') + linkedTabs.currentLocation.search + linkedTabs.currentLocation.hash;

        secondTab.click();

        if (historySpy) {
          expect(historySpy).toHaveBeenCalledWith({
            url: newState,
          }, document.title, newState);
        }
      });
    });
  });
})();
