update: work with webcal

test/icsUrl.test.js

@@ -0,0 +1,20 @@
+const { test } = require('node:test');
+const assert = require('node:assert/strict');
+const { normalizeIcsUrl } = require('../src/lib/icsUrl');
+
+test('normalizeIcsUrl: rewrites webcal:// to https://', () => {
+  assert.equal(normalizeIcsUrl('webcal://p01-caldav.icloud.com/foo.ics'), 'https://p01-caldav.icloud.com/foo.ics');
+});
+
+test('normalizeIcsUrl: rewrites webcals:// to https://', () => {
+  assert.equal(normalizeIcsUrl('webcals://p01-caldav.icloud.com/foo.ics'), 'https://p01-caldav.icloud.com/foo.ics');
+});
+
+test('normalizeIcsUrl: is case-insensitive on the scheme', () => {
+  assert.equal(normalizeIcsUrl('WebCal://example.com/foo.ics'), 'https://example.com/foo.ics');
+});
+
+test('normalizeIcsUrl: leaves http/https URLs untouched', () => {
+  assert.equal(normalizeIcsUrl('https://example.com/foo.ics'), 'https://example.com/foo.ics');
+  assert.equal(normalizeIcsUrl('http://example.com/foo.ics'), 'http://example.com/foo.ics');
+});