From 1898db985f708f0ff54d04d2d77303c633bc1ba2 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Thu, 7 May 2026 00:35:07 +0300
Subject: Fix podcast episode pagination arguments (p0)

---
 web/js/tests/podcast-episodes-api.test.js | 74 +++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 web/js/tests/podcast-episodes-api.test.js

(limited to 'web/js/tests')

diff --git a/web/js/tests/podcast-episodes-api.test.js b/web/js/tests/podcast-episodes-api.test.js
new file mode 100644
index 0000000..d46d782
--- /dev/null
+++ b/web/js/tests/podcast-episodes-api.test.js
@@ -0,0 +1,74 @@
+import { API } from '../api.js';
+
+const failures = [];
+const requested = [];
+
+function assert(cond, msg) {
+  if (!cond) failures.push(msg || 'assertion failed');
+}
+
+globalThis.fetch = async (url) => {
+  requested.push(url);
+  return new Response('[]', {
+    status: 200,
+    headers: { 'content-type': 'application/json' },
+  });
+};
+
+globalThis.location = { pathname: '/', href: '' };
+
+async function capturesUrl(fn) {
+  requested.length = 0;
+  await fn();
+  return requested[0];
+}
+
+function paramsFrom(url) {
+  return new URL(url, 'http://player.test').searchParams;
+}
+
+async function testDefaults() {
+  const params = paramsFrom(await capturesUrl(() => API.podcastEpisodes(5)));
+  assert(params.get('limit') === '50', 'default limit should be 50');
+  assert(params.get('offset') === '0', 'default offset should be 0');
+}
+
+async function testSecondArgumentIsOffset() {
+  const params = paramsFrom(await capturesUrl(() => API.podcastEpisodes(5, 0)));
+  assert(params.get('limit') === '50', 'single numeric argument should keep default limit');
+  assert(params.get('offset') === '0', 'single numeric argument should set explicit offset');
+}
+
+async function testOptionsObject() {
+  const params = paramsFrom(await capturesUrl(() => API.podcastEpisodes(5, { limit: 25, offset: 75 })));
+  assert(params.get('limit') === '25', 'options object should set limit');
+  assert(params.get('offset') === '75', 'options object should set offset');
+}
+
+async function testOptionsObjectKeepsZeroLimit() {
+  const params = paramsFrom(await capturesUrl(() => API.podcastEpisodes(5, { limit: 0 })));
+  assert(params.get('limit') === '0', 'options object should preserve explicit zero limit');
+  assert(params.get('offset') === '0', 'options object should default offset to 0');
+}
+
+async function testLegacyLimitOffset() {
+  const params = paramsFrom(await capturesUrl(() => API.podcastEpisodes(5, 10, 20)));
+  assert(params.get('limit') === '10', 'legacy third-argument form should preserve limit');
+  assert(params.get('offset') === '20', 'legacy third-argument form should preserve offset');
+}
+
+console.log('Running podcast episodes API pagination tests...');
+await testDefaults();
+await testSecondArgumentIsOffset();
+await testOptionsObject();
+await testOptionsObjectKeepsZeroLimit();
+await testLegacyLimitOffset();
+
+if (failures.length) {
+  console.error('FAILURES:');
+  failures.forEach((m) => console.error('  - ' + m));
+  process.exit(1);
+} else {
+  console.log('All podcast episodes API pagination tests passed.');
+  process.exit(0);
+}
-- 
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