import Vue from 'vue';
import graphComponent from '~/pipelines/components/graph/graph_component.vue';
import graphJSON from './mock_data';

describe('graph component', () => {
  preloadFixtures('static/graph.html.raw');

  let GraphComponent;

  beforeEach(() => {
    loadFixtures('static/graph.html.raw');
    GraphComponent = Vue.extend(graphComponent);
  });

  describe('while is loading', () => {
    it('should render a loading icon', () => {
      const component = new GraphComponent({
        propsData: {
          isLoading: true,
          pipeline: {},
        },
      }).$mount('#js-pipeline-graph-vue');
      expect(component.$el.querySelector('.loading-icon')).toBeDefined();
    });
  });

  describe('with data', () => {
    it('should render the graph', () => {
      const component = new GraphComponent({
        propsData: {
          isLoading: false,
          pipeline: graphJSON,
        },
      }).$mount('#js-pipeline-graph-vue');

      expect(component.$el.classList.contains('js-pipeline-graph')).toEqual(true);

      expect(
        component.$el.querySelector('.stage-column:first-child').classList.contains('no-margin'),
      ).toEqual(true);

      expect(
        component.$el.querySelector('.stage-column:nth-child(2)').classList.contains('left-margin'),
      ).toEqual(true);

      expect(
        component.$el.querySelector('.stage-column:nth-child(2) .build:nth-child(1)').classList.contains('left-connector'),
      ).toEqual(true);

      expect(component.$el.querySelector('loading-icon')).toBe(null);

      expect(component.$el.querySelector('.stage-column-list')).toBeDefined();
    });
  });
});