text: import Vue from 'vue';
  import DiffFileComponent from '~/diffs/components/diff_file.vue';
  import store from '~/mr_notes/stores';
  import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
  import diffFileMockData from '../mock_data/diff_file';
  
  describe('DiffFile', () => {
    let vm;
    const getDiffFileMock = () => Object.assign({}, diffFileMockData);
  
    beforeEach(() => {
      vm = createComponentWithStore(Vue.extend(DiffFileComponent), store, {
        file: getDiffFileMock(),
        canCurrentUserFork: false,
      }).$mount();
    });
  
    describe('template', () => {
      it('should render component with file header, file content components', () => {
        const el = vm.$el;
        const { fileHash, filePath } = diffFileMockData;
  
        expect(el.id).toEqual(fileHash);
        expect(el.classList.contains('diff-file')).toEqual(true);
  
        expect(el.querySelectorAll('.diff-content.hidden').length).toEqual(0);
        expect(el.querySelector('.js-file-title')).toBeDefined();
        expect(el.querySelector('.file-title-name').innerText.indexOf(filePath) > -1).toEqual(true);
        expect(el.querySelector('.js-syntax-highlight')).toBeDefined();
  
        expect(vm.file.renderIt).toEqual(false);
        vm.file.renderIt = true;
  
        vm.$nextTick(() => {
          expect(el.querySelectorAll('.line_content').length > 5).toEqual(true);
        });
      });
  
      describe('collapsed', () => {
        it('should not have file content', done => {
          expect(vm.$el.querySelectorAll('.diff-content').length).toEqual(1);
          expect(vm.file.collapsed).toEqual(false);
          vm.file.collapsed = true;
          vm.file.renderIt = true;
  
          vm.$nextTick(() => {
            expect(vm.$el.querySelectorAll('.diff-content').length).toEqual(0);
  
            done();
          });
        });
  
        it('should have collapsed text and link', done => {
          vm.file.renderIt = true;
          vm.file.collapsed = false;
          vm.file.highlightedDiffLines = null;
  
          vm.$nextTick(() => {
            expect(vm.$el.innerText).toContain('This diff is collapsed');
            expect(vm.$el.querySelectorAll('.js-click-to-expand').length).toEqual(1);
  
            done();
          });
        });
  
        it('should have collapsed text and link even before rendered', done => {
          vm.file.renderIt = false;
          vm.file.collapsed = true;
  
          vm.$nextTick(() => {
            expect(vm.$el.innerText).toContain('This diff is collapsed');
            expect(vm.$el.querySelectorAll('.js-click-to-expand').length).toEqual(1);
  
            done();
          });
        });
  
        it('should have loading icon while loading a collapsed diffs', done => {
          vm.file.collapsed = true;
          vm.isLoadingCollapsedDiff = true;
  
          vm.$nextTick(() => {
            expect(vm.$el.querySelectorAll('.diff-content.loading').length).toEqual(1);
  
            done();
          });
        });
      });
    });
  
    describe('too large diff', () => {
      it('should have too large warning and blob link', done => {
        const BLOB_LINK = '/file/view/path';
        vm.file.tooLarge = true;
        vm.file.viewPath = BLOB_LINK;
  
        vm.$nextTick(() => {
          expect(vm.$el.innerText).toContain(
            'This source diff could not be displayed because it is too large',
          );
          expect(vm.$el.querySelector('.js-too-large-diff')).toBeDefined();
          expect(vm.$el.querySelector('.js-too-large-diff a').href.indexOf(BLOB_LINK) > -1).toEqual(
            true,
          );
  
          done();
        });
      });
    });
  });
  