Function completion

deps/npm/test/lib/commands/run.js:39–44

(t, remain, pkg, isFish = false)

t.test('completion', async t => {
  const completion = async (t, remain, pkg, isFish = false) => {
    const { runScript } = await mockRs(t,
      pkg ? { prefixDir: { 'package.json': JSON.stringify(pkg) } } : {}
    )
    return runScript.completion({ conf: { argv: { remain } }, isFish })
  }

  t.test('already have a script name', async t => {
    const res = await completion(t, ['npm', 'run', 'x'])