grafana/public/app/features/annotations/specs/annotations_srv_specs.jest.ts

import {makeRegions, dedupAnnotations} from '../events_processing';

describe('Annotations', () => {

  describe('Annotations regions', () => {
    let testAnnotations: any[];

    beforeEach(() => {
      testAnnotations = [
        {id: 1, time: 1},
        {id: 2, time: 2},
        {id: 3, time: 3, regionId: 3},
        {id: 4, time: 5, regionId: 3},
        {id: 5, time: 4, regionId: 5},
        {id: 6, time: 8, regionId: 5}
      ];
    });

    it('should convert single region events to regions', () => {
      const range = {from: 0, to: 10};
      const expectedAnnotations = [
        {id: 3, regionId: 3, isRegion: true, time: 3, timeEnd: 5},
        {id: 5, regionId: 5, isRegion: true, time: 4, timeEnd: 8},
        {id: 1, time: 1},
        {id: 2, time: 2}
      ];

      let regions = makeRegions(testAnnotations, {range: range});
      expect(regions).toEqual(expectedAnnotations);
    });

    it('should cut regions to current time range', () => {
      const range = {from: 0, to: 8};
      testAnnotations = [
        {id: 5, time: 4, regionId: 5}
      ];
      const expectedAnnotations = [
        {id: 5, regionId: 5, isRegion: true, time: 4, timeEnd: 7}
      ];

      let regions = makeRegions(testAnnotations, {range: range});
      expect(regions).toEqual(expectedAnnotations);
    });
  });

  describe('Annotations deduplication', () => {
    it('should remove duplicated annotations', () => {
      const testAnnotations = [
        {id: 1, time: 1},
        {id: 2, time: 2},
        {id: 2, time: 2},
        {id: 5, time: 5},
        {id: 5, time: 5}
      ];
      const expectedAnnotations = [
        {id: 1, time: 1},
        {id: 2, time: 2},
        {id: 5, time: 5}
      ];

      let deduplicated = dedupAnnotations(testAnnotations);
      expect(deduplicated).toEqual(expectedAnnotations);
    });

    it('should leave non "panel-alert" event if present', () => {
      const testAnnotations = [
        {id: 1, time: 1},
        {id: 2, time: 2},
        {id: 2, time: 2, eventType: 'panel-alert'},
        {id: 5, time: 5},
        {id: 5, time: 5}
      ];
      const expectedAnnotations = [
        {id: 1, time: 1},
        {id: 2, time: 2},
        {id: 5, time: 5}
      ];

      let deduplicated = dedupAnnotations(testAnnotations);
      expect(deduplicated).toEqual(expectedAnnotations);
    });
  });
});