Function file

test/lib/commands/diff.js:922–922

(v)

t.test('various options', async t => {
  const mockOptions = async (t, config) => {
    const file = (v) => new Array(50).fill(0).map((_, i) => `${i}${i === 20 ? v : ''}`).join('\n')
    const mock = await mockDiff(t, {
      diff: ['bar@2.0.0', 'bar@3.0.0'],
      config,