import yargs from "yargs"
import { parseArgs, CliArgs } from "../lib-js/cli-args"

// mock the compiler, since we don't actually care that it's created
jest.mock("../lib-js/compiler")

function wrap(yargs: yargs.Argv<{}>): yargs.Argv<{}> {
  return yargs.fail((msg, error) => {
    throw error
  })
}

async function parseTestArgs(args: string): Promise<CliArgs> {
  return await parseArgs(args.split(" "), wrap)
}

describe("getArgs", () => {
  it("requires one of --dart or --command", () => {
    expect(() => parseTestArgs("")).rejects.toThrow(
      "Must specify --dart or --command"
    )
  })

  it("populates impl based on --dart", async () => {
    const argv = await parseTestArgs("--dart ../dart-sass")
    expect(argv.impl).toEqual("dart-sass")
  })

  it("populates the todoMode field based on --run-todo and --probe-todo", async () => {
    const argv = await parseTestArgs("--dart ../dart-sass --run-todo")
    expect(argv.todoMode).toEqual("run")
    const argv2 = await parseTestArgs("--dart ../dart-sass --probe-todo")
    expect(argv2.todoMode).toEqual("probe")
  })
})