Use.test.ts

import {ppath, xfs, npath}        from '@yarnpkg/fslib';
import assert                     from 'node:assert';
import process                    from 'node:process';
import {describe, beforeEach, it} from 'node:test';

import {runCli}                   from './_runCli';

beforeEach(async () => {
  process.env.COREPACK_HOME = npath.fromPortablePath(await xfs.mktempPromise());
  process.env.COREPACK_DEFAULT_TO_LATEST = `0`;
});

describe(`UseCommand`, () => {
  it(`should set the package manager in the current project`, async () => {
    await xfs.mktempPromise(async cwd => {
      await xfs.writeJsonPromise(ppath.join(cwd, `package.json`), {
      });

      assert.deepStrictEqual(await runCli(cwd, [`use`, `yarn@1.22.4`]), {
        exitCode: 0,
      });

      assert.deepStrictEqual(await xfs.readJsonPromise(ppath.join(cwd, `package.json`)), {
        packageManager: `yarn@1.22.4+sha256.bc5316aa110b2f564a71a3d6e235be55b98714660870c5b6b2d2d3f12587fb58`,
      });

      assert.deepStrictEqual(await runCli(cwd, [`yarn`, `--version`]), {
        exitCode: 0,
        stdout: `1.22.4\n`,
      });
    });
  });
});