index.spec.ts

import fs from 'fs';
import path from 'path';
import { getConfig } from '../../../config/defaults';
import * as _fs from '../../../util/fs';
import * as npmExtract from '.';

const utilfs: any = _fs;

// TODO: fix types
const defaultConfig = getConfig();

function readFixture(fixture: string) {
  return fs.readFileSync(
    path.resolve(__dirname, `../__fixtures__/${fixture}`),
    'utf8'
  );
}

const input01Content = readFixture('inputs/01.json');
const workspacesContent = readFixture('inputs/workspaces.json');
const workspacesSimpleContent = readFixture('inputs/workspaces-simple.json');
const vendorisedContent = readFixture('is-object.json');
const invalidNameContent = readFixture('invalid-name.json');

describe('manager/npm/extract', () => {
  describe('.extractPackageFile()', () => {
    beforeEach(() => {
      utilfs.readLocalFile = jest.fn(() => null);
    });
    it('returns null if cannot parse', async () => {
      const res = await npmExtract.extractPackageFile(
        'not json',
        'package.json',
        defaultConfig
      );
      expect(res).toBeNull();
    });
    it('catches invalid names', async () => {
      const res = await npmExtract.extractPackageFile(
        invalidNameContent,
        'package.json',
        defaultConfig
      );
      expect(res).toMatchSnapshot();
    });
    it('ignores vendorised package.json', async () => {
      const res = await npmExtract.extractPackageFile(
        vendorisedContent,
        'package.json',
        defaultConfig
      );
      expect(res).toBeNull();
    });
    it('throws error if non-root renovate config', async () => {
      await expect(
        npmExtract.extractPackageFile(
          '{ "renovate": {} }',
          'backend/package.json',
          defaultConfig
        )
      ).rejects.toThrow();
    });
    it('returns null if no deps', async () => {
      const res = await npmExtract.extractPackageFile(
        '{ "renovate": {} }',
        'package.json',
        defaultConfig
      );
      expect(res).toBeNull();
    });