text: const t = require('tap')
  const { load: loadMockNpm } = require('../../fixtures/mock-npm.js')
  
  t.test('usage', async t => {
    const { npm } = await loadMockNpm(t)
    t.afterEach(() => {
      npm.config.set('viewer', null)
      npm.config.set('long', false)
      npm.config.set('userconfig', '/some/config/file/.npmrc')
    })
    const { dirname } = require('path')
    const basedir = dirname(dirname(dirname(__dirname)))
    t.cleanSnapshot = str => str.split(basedir).join('{BASEDIR}')
      .split(require('../../../package.json').version).join('{VERSION}')
  
    npm.config.set('viewer', null)
    npm.config.set('long', false)
    npm.config.set('userconfig', '/some/config/file/.npmrc')
  
    t.test('basic usage', async t => {
      t.matchSnapshot(await npm.usage)
      t.end()
    })
  
    t.test('with browser', async t => {
      npm.config.set('viewer', 'browser')
      t.matchSnapshot(await npm.usage)
      t.end()
    })
  
    t.test('with long', async t => {
      npm.config.set('long', true)
      t.matchSnapshot(await npm.usage)
      t.end()
    })
  
    t.test('set process.stdout.columns', async t => {
      const { columns } = process.stdout
      t.teardown(() => {
        Object.defineProperty(process.stdout, 'columns', {
          value: columns,
          enumerable: true,
          configurable: true,
          writable: true,
        })
      })
      const cases = [0, 90]
      for (const cols of cases) {
        t.test(`columns=${cols}`, async t => {
          Object.defineProperty(process.stdout, 'columns', {
            value: cols,
            enumerable: true,
            configurable: true,
            writable: true,
          })
          t.matchSnapshot(await npm.usage)
        })
      }
    })
  })
  