Versie 0.3.3

tests/price/btc-explorer-retry.test.mjs

@@ -0,0 +1,51 @@
+// Generated, do not edit. sha256:4bf1820de70357b7a7e29ccee6fc599f970ee70dfc5b2f00ce791c38d33bc92e
+import { describe, it, mock, afterEach } from 'node:test';
+import assert from 'node:assert/strict';
+
+const { fetchJson } = await import('../../client/price/btc-explorer.js');
+
+const echteFetch = globalThis.fetch;
+afterEach(() => { globalThis.fetch = echteFetch; mock.timers.reset(); });
+
+async function uitzitten(belofte) {
+  let klaar = false;
+  const uit = belofte.then(v => ({ v }), e => ({ e })).finally(() => { klaar = true; });
+  while (!klaar) {
+    await new Promise(r => setImmediate(r));
+    mock.timers.runAll();
+  }
+  return uit;
+}
+
+const ok = body => ({ ok: true, status: 200, json: async () => body });
+const status = s => ({ ok: false, status: s, json: async () => ({}) });
+
+describe('fetchJson: opnieuw proberen', () => {
+  it('zit drie netwerkfouten uit en geeft dan het antwoord', async () => {
+    mock.timers.enable({ apis: ['setTimeout'] });
+    let n = 0;
+    globalThis.fetch = async () => { if (++n <= 3) throw new TypeError('Failed to fetch'); return ok({ x: 1 }); };
+    const { v, e } = await uitzitten(fetchJson('https://x/api', 'X'));
+    assert.equal(e, undefined);
+    assert.deepEqual(v, { x: 1 });
+    assert.equal(n, 4);
+  });
+
+  it('geeft na de vierde mislukte poging de fout van de laatste', async () => {
+    mock.timers.enable({ apis: ['setTimeout'] });
+    let n = 0;
+    globalThis.fetch = async () => { n++; return status(429); };
+    const { e } = await uitzitten(fetchJson('https://x/api', 'X'));
+    assert.ok(e);
+    assert.equal(n, 4);
+  });
+
+  it('probeert een 404 niet opnieuw', async () => {
+    mock.timers.enable({ apis: ['setTimeout'] });
+    let n = 0;
+    globalThis.fetch = async () => { n++; return status(404); };
+    const { e } = await uitzitten(fetchJson('https://x/api', 'X'));
+    assert.ok(e);
+    assert.equal(n, 1);
+  });
+});