test(js): add node:test unit tests for countdown and pleroma adapter

tests/js/run.js

@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+/**
+ * Lanceur des tests unitaires JS.
+ *
+ * Utilise le runner natif de Node (node:test), aucune dépendance npm.
+ * Usage : node tests/js/run.js
+ */
+'use strict';
+
+const { run } = require('node:test');
+const { spec } = require('node:test/reporters');
+const fs = require('node:fs');
+const path = require('node:path');
+
+const testDir = __dirname;
+const files = fs
+    .readdirSync(testDir)
+    .filter((name) => name.endsWith('-test.js'))
+    .sort()
+    .map((name) => path.join(testDir, name));
+
+if (files.length === 0) {
+    console.error('Aucun fichier *-test.js trouvé dans ' + testDir);
+    process.exit(1);
+}
+
+const stream = run({ files });
+
+let failures = 0;
+stream.on('test:fail', () => {
+    failures += 1;
+});
+
+stream.on('error', (err) => {
+    console.error(err);
+    process.exitCode = 1;
+});
+
+stream.compose(spec).pipe(process.stdout);
+
+stream.on('end', () => {
+    if (failures > 0) {
+        process.exitCode = 1;
+    }
+});