ludus/test/run_tests.js

import {run} from "../target/js/ludus.js"
import * as fs from "node:fs/promises"
import t from "tap"

const case_path = "./cases"
const files = await fs.readdir(case_path)

for (const file of files) {
  const source = await fs.readFile(`${case_path}/${file}`, {encoding: "utf8"})
  const first_line = source.split("\n")[0]
  const expected = first_line.split("EXPECT")[1].trim()
  if (expected === "PANIC") expect_panic(file, source)
  else expect_result(file, source, expected)
}

function expect_panic(file, source) {
  const result = run(source).errors[0]
  t.test(`testing ${file}: EXPECT PANIC`, t => {
    t.ok(result)
    t.end()
  })
}

function expect_result(file, source, expected) {
  const result = run(source).result
  t.test(`testing ${file}: EXPECT ${expected}, GOT ${result}`, t => {
    t.equal(expected, result)
    t.end()
  }) 
}