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/* global Deno */
import {  assertEquals,  assertMatch,} from 'https://deno.land/std/testing/asserts.ts';import yargs from '../../deno.ts';import {Arguments} from '../../deno-types.ts';import {commands} from '../esm/fixtures/commands/index.mjs';
Deno.test('demandCommand(1) throw error if no command provided', () => {  let err: Error | null = null;  yargs()    .demandCommand(1)    .parse(Deno.args, (_err: Error) => {      err = _err;    });  assertMatch(err!.message, /Not enough non-option/);});
// TODO: we should think of a way to support this functionalityDeno.test('guesses version # based on package.json', () => {  let output: string | null = null;  yargs().parse(    '--version',    (_err: Error, argv: Arguments, _output: string) => {      output = _output;    }  );  assertMatch('' + output, /[0-9]+\.[0-9]+\.[0-9]+/);});
// Handling of strings that look like numbers, see:// https://github.com/yargs/yargs/issues/1758Deno.test(  'does not drop .0 if positional is configured as string',  async () => {    const argv = (await yargs(['cmd', '33.0'])      .command('cmd [str]', 'a command', (yargs: any) => {        return yargs.positional('str', {          type: 'string',        });      })      .parse()) as Arguments;    assertEquals(argv.str, '33.0');  });
Deno.test('hierarchy of commands', async () => {  const context = {    output: {value: 0},  };  yargs().command(commands).parse('a c 10 5', context);  assertEquals(context.output.value, 15);});
Deno.test('parseAsync()', async () => {  const err: Error | null = null;  const argvPromise = yargs()    .middleware([      async (argv: Arguments) => {        await new Promise(resolve => {          setTimeout(resolve, 10);        });        argv.foo *= 2;      },    ])    .parseAsync('--foo 33');  assertEquals(typeof argvPromise.then, 'function');  const argv = (await argvPromise) as Arguments;  assertEquals(argv.foo, 66);});