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import fs from 'fs/promises' |
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const readFile = fs.readFile |
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import { promisify } from 'util' |
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import * as cp from 'child_process' |
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const exec = promisify(cp.exec) |
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export const tests = [] |
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const name = 'verydisco-forever' |
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const withArgAndExpect = async ({ arg, expect, path, eq }) => { |
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const cwd = `${path |
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.split('/') |
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.slice(0, -1) |
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.join('/')}/` |
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await exec(`node ${name}.mjs "${arg}"`, { cwd }) |
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const out = await readFile(`${cwd}${name}.txt`, 'utf8').catch((err) => |
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err.code === 'ENOENT' ? 'output file not found' : err, |
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) |
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await exec(`rm ${name}.txt`, { cwd }) |
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return eq(out, expect) |
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} |
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tests.push(async ({ path, eq }) => |
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withArgAndExpect({ path, eq, arg: 'discovery', expect: 'verydisco' }), |
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) |
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tests.push(async ({ path, eq }) => |
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withArgAndExpect({ path, eq, arg: 'kiss cool', expect: 'sski olco' }), |
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) |
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tests.push(async ({ path, eq }) => |
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withArgAndExpect({ |
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path, |
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eq, |
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arg: 'Node is awesome', |
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expect: 'deNo si omeawes', |
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}), |
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) |
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Object.freeze(tests) |
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## verydisco-forever |
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### Instructions |
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Create a `verydisco-forever.mjs` script that does exactly the same as you verydisco script, but write the result in a `verydisco-forever.txt` file instead of printing it in the console. |
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### Notions |
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- [Node file system: `writeFile`](https://nodejs.org/api/fs.html#fs_fspromises_writefile_file_data_options) |
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- [Node path: `resolve`](https://nodejs.org/api/path.html#path_path_resolve_paths) |
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- [Node path: `join`](https://nodejs.org/api/path.html#path_path_join_paths) |
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