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import {  CHANNELS,  isScaleChannel,  NONPOSITION_SCALE_CHANNELS,  rangeType,  SCALE_CHANNELS,  SINGLE_DEF_CHANNELS,  UNIT_CHANNELS} from '../src/channel';import {without} from './util';
describe('channel', () => {  describe('UNIT_CHANNELS', () => {    it('should be CHANNELS without row and column', () => {      expect(UNIT_CHANNELS).toEqual(without(CHANNELS, ['row', 'column', 'facet']));    });  });
  describe('SINGLE_DEF_CHANNELS', () => {    it('should be CHANNELS without detail and order', () => {      expect(SINGLE_DEF_CHANNELS).toEqual(without(CHANNELS, ['detail', 'order', 'tooltip']));    });  });
  describe('SCALE_CHANNELS', () => {    it('should be UNIT_CHANNELS without X2, Y2, ORDER, DETAIL, TEXT, LABEL, TOOLTIP', () => {      expect(SCALE_CHANNELS).toEqual(        without(UNIT_CHANNELS, [          'x2',          'y2',          'xError',          'yError',          'xError2',          'yError2',          'theta2',          'radius2',          'latitude',          'longitude',          'latitude2',          'longitude2',          'order',          'detail',          'key',          'text',          'label',          'tooltip',          'href',          'url',          'description'        ])      );    });  });
  describe('NONPOSITION_SCALE_CHANNELS', () => {    it('should be SCALE_CHANNELS without x, y, x2, y2', () => {      expect(NONPOSITION_SCALE_CHANNELS).toEqual(without(SCALE_CHANNELS, ['x', 'y', 'theta', 'radius']));    });  });
  describe('isScaleChannel', () => {    it('should return true for all scale channel', () => {      for (const channel of SCALE_CHANNELS) {        expect(isScaleChannel(channel)).toBeTruthy();      }    });  });
  describe('rangeType', () => {    it('should be defined for all channels (no error).', () => {      for (const c of CHANNELS) {        expect(() => {          rangeType(c);        }).not.toThrow();      }    });  });});