Testing with Node/Deno

[mode89]

Hi there :)

Is there a way to test code in Node or Deno?

[borkdude]

You can load scittle in node nowadays:

import scittle from 'scittle/dist/scittle.js';

var scittle_core = scittle.scittle.core;

console.log(scittle_core.eval_string(`(+ 1 2 3)`))

Does that help?

[mode89]

Thanks :) That worked for me.

Here is the snippet I ended up with in Deno:

import "https://cdn.jsdelivr.net/npm/scittle@0.7.23/dist/scittle.js";
const { scittle } = globalThis;

function loadClojureScript(path) {
  const content = Deno.readFileSync(path);
  const decoder = new TextDecoder("utf-8");
  const script = decoder.decode(content);
  scittle.core.eval_string(script);
}

function loadTestsFrom(path) {
  for (const entry of Deno.readDirSync(path)) {
    if (entry.isFile && entry.name.endsWith("-test.cljs")) {
      loadClojureScript(`tests/${entry.name}`);
      const ns = scittle.core.eval_string("(str *ns*)");
      const testFns = scittle.core.eval_string(`
        (->> (ns-publics '${ns})
             vals
             (filter #(:test (meta %)))
             (map #(array (str (:ns (meta %)) "/" (:name (meta %)))
                          (deref %)))
             into-array)
      `);
      for (const [name, fn] of testFns) {
        Deno.test(name, fn);
      }
    }
  }
}

loadClojureScript("app.cljs");
loadTestsFrom("tests");