derma/tests/parse_args.test.js

import { parse_args } from '../src/logic';

const process = require('process');
const process_mock = jest.spyOn(process, 'exit').mockImplementation(() => true);

describe('test parse args', () => {
  it('parses a single page id with -p', () => {
    const res = parse_args(['-p', 'foo']);
    expect(res.page_ids).toEqual(['https://www.facebook.com/foo/events/']);
  });

  it('parses a single page id with --page', () => {
    const res = parse_args(['--page=foo']);
    expect(res.page_ids).toEqual(['https://www.facebook.com/foo/events/']);
  });

  it('parses multiple page ids with --pages', () => {
    const res = parse_args(['--pages=foo,bar']);
    expect(res.page_ids).toEqual([
      'https://www.facebook.com/foo/events/',
      'https://www.facebook.com/bar/events/',
    ]);
  });

  ['-?', '--help', '-h'].forEach((param) => {
    it('parses help options', () => {
      const res = parse_args([param]);
      expect(process_mock).toHaveBeenCalledWith(1);
    });
  });

  it('parses event option', () => {
    const res = parse_args(['--events=events.json']);
    expect(res.events).toEqual('events.json');
  });

  it('sets events to null if no option is passed', () => {
    const res = parse_args(['']);
    expect(res.events).toEqual(null);
  });

  it('sets output to null if no option is passed', () => {
    const res = parse_args(['']);
    expect(res.output).toEqual(null);
  });

  it('passes output if it is set with --output', () => {
    const res = parse_args(['--output=jacobi']);
    expect(res.output).toEqual('jacobi');
  });

  it('passes output if it is set with -o', () => {
    const res = parse_args(['-o', 'jacobi']);
    expect(res.output).toEqual('jacobi');
  });
});