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80 lines
2.2 KiB
80 lines
2.2 KiB
import { join as joinPath, dirname } from 'path' |
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import { fileURLToPath } from 'url' |
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import { deepStrictEqual as eq } from 'assert' |
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import * as fs from 'fs' |
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const { readFile, writeFile } = fs.promises |
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const wait = delay => new Promise(s => setTimeout(s, delay)) |
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const fail = fn => { |
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try { |
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fn() |
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} catch (err) { |
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return true |
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} |
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} |
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const name = process.argv[2] |
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const fatal = (...args) => { |
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console.error(...args) |
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process.exit(1) |
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} |
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if (!name) fatal('missing exercise, usage:\nnode test exercise-name') |
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const ifNoEnt = fn => err => { |
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if (err.code !== 'ENOENT') throw err |
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fn(err) |
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} |
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const root = dirname(fileURLToPath(import.meta.url)) |
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const read = (filename, description) => |
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readFile(joinPath(root, filename), 'utf8').catch( |
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ifNoEnt(() => fatal(`Missing ${description} for ${name}`)), |
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) |
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const { filter, map, join } = [] |
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const { includes, split } = '' |
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const stackFmt = (err, url) => { |
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Object.assign(String.prototype, { includes, split }) |
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Object.assign(Array.prototype, { filter, map, join }) |
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return [ |
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err.message, |
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...err.stack |
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.split('\n') |
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.filter(l => l.includes(url)) |
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.map(l => l.split(url).join(`${name}.js`)) |
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].join('\n') |
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} |
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const main = async () => { |
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const [test, code] = await Promise.all([ |
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read(`${name}_test.js`, 'test'), |
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read(`student/${name}.js`, 'student solution'), |
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]) |
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if (code.includes('import')) fatal('import keyword not allowed') |
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const parts = test.split('// /*/ // ⚡') |
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const [inject, testCode] = parts.length < 2 ? ['', test] : parts |
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const combined = `${inject.trim()}\n${code |
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.replace(inject, '') |
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.trim()}\n${testCode.trim()}\n` |
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const b64 = Buffer.from(combined).toString('base64') |
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const url = `data:text/javascript;base64,${b64}` |
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const { setup, tests } = await import(url).catch(err => |
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fatal(`Unable to execute ${name} solution, error:\n${stackFmt(err, url)}`), |
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) |
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const ctx = (await (setup && setup())) || {} |
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const tools = { eq, fail, wait, code, ctx } |
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for (const [i, t] of tests.entries()) { |
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try { |
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await t(tools) |
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} catch (err) { |
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console.log(`test #${i} failed:\n${t.toString()}\n\nError:`) |
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fatal(stackFmt(err, url)) |
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} |
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} |
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} |
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main().catch(err => fatal(err.stack))
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