debian-mirror-gitlab/spec/frontend/repository/components/preview/index_spec.js

import { GlLoadingIcon } from '@gitlab/ui';
import { shallowMount } from '@vue/test-utils';
import { nextTick } from 'vue';
import { handleLocationHash } from '~/lib/utils/common_utils';
import Preview from '~/repository/components/preview/index.vue';

jest.mock('~/lib/utils/common_utils');

let vm;
let $apollo;

function factory(blob, loading) {
  $apollo = {
    queries: {
      readme: {
        query: jest.fn().mockReturnValue(Promise.resolve({})),
        loading,
      },
    },
  };

  vm = shallowMount(Preview, {
    propsData: {
      blob,
    },
    mocks: {
      $apollo,
    },
  });
}

describe('Repository file preview component', () => {
  afterEach(() => {
    vm.destroy();
  });

  it('renders file HTML', async () => {
    factory({
      webPath: 'http://test.com',
      name: 'README.md',
    });

    // setData usage is discouraged. See https://gitlab.com/groups/gitlab-org/-/epics/7330 for details
    // eslint-disable-next-line no-restricted-syntax
    vm.setData({ readme: { html: '<div class="blob">test</div>' } });

    await nextTick();
    expect(vm.element).toMatchSnapshot();
  });

  it('handles hash after render', async () => {
    factory({
      webPath: 'http://test.com',
      name: 'README.md',
    });

    // setData usage is discouraged. See https://gitlab.com/groups/gitlab-org/-/epics/7330 for details
    // eslint-disable-next-line no-restricted-syntax
    vm.setData({ readme: { html: '<div class="blob">test</div>' } });

    await nextTick();
    expect(handleLocationHash).toHaveBeenCalled();
  });

  it('renders loading icon', async () => {
    factory(
      {
        webPath: 'http://test.com',
        name: 'README.md',
      },
      true,
    );

    await nextTick();
    expect(vm.findComponent(GlLoadingIcon).exists()).toBe(true);
  });
});