xtream bundler

Dockers/xtream-ppv-bundler/test/scheduler.test.js

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+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const { createState, reconcile, summarize } = require('../src/scheduler');
+
+const options = { maxChannels: 3, startGraceMs: 24 * 60 * 60 * 1000 };
+
+function makeEvent(id, startIso, endIso) {
+  return {
+    key: id,
+    title: id,
+    league: 'Jupiler Pro League',
+    language: 'nl',
+    startAt: new Date(startIso),
+    endAt: new Date(endIso),
+    sources: [{ streamId: id, name: id, candidates: [`http://upstream/${id}.ts`] }],
+    missingCount: 0,
+  };
+}
+
+function current(...events) {
+  return new Map(events.map((event) => [event.key, event]));
+}
+
+function slotKeys(state) {
+  return state.slots.map((slot) => slot.eventKey);
+}
+
+test('fills the first three slots by start time and queues the rest', () => {
+  const state = createState(3);
+  const events = current(
+    makeEvent('A', '2026-11-06T16:00:00Z', '2026-11-06T20:00:00Z'),
+    makeEvent('B', '2026-11-06T16:30:00Z', '2026-11-06T20:30:00Z'),
+    makeEvent('C', '2026-11-06T17:00:00Z', '2026-11-06T21:00:00Z'),
+    makeEvent('D', '2026-11-06T17:30:00Z', '2026-11-06T21:30:00Z'),
+    makeEvent('E', '2026-11-06T18:00:00Z', '2026-11-06T22:00:00Z')
+  );
+
+  reconcile(state, events, Date.parse('2026-11-06T18:00:00Z'), options);
+
+  assert.deepEqual(slotKeys(state), ['A', 'B', 'C']);
+  const summary = summarize(state);
+  assert.deepEqual(summary.queue.map((event) => event.key), ['D', 'E']);
+});
+
+test('a freed slot is filled by the oldest waiting event', () => {
+  const state = createState(3);
+  const events = current(
+    makeEvent('A', '2026-11-06T16:00:00Z', '2026-11-06T20:00:00Z'),
+    makeEvent('B', '2026-11-06T16:30:00Z', '2026-11-06T20:30:00Z'),
+    makeEvent('C', '2026-11-06T17:00:00Z', '2026-11-06T21:00:00Z'),
+    makeEvent('D', '2026-11-06T17:30:00Z', '2026-11-06T21:30:00Z'),
+    makeEvent('E', '2026-11-06T18:00:00Z', '2026-11-06T22:00:00Z')
+  );
+
+  reconcile(state, events, Date.parse('2026-11-06T18:00:00Z'), options);
+  assert.deepEqual(slotKeys(state), ['A', 'B', 'C']);
+
+  reconcile(state, events, Date.parse('2026-11-06T20:01:00Z'), options);
+  assert.deepEqual(slotKeys(state), ['D', 'B', 'C']);
+});
+
+test('an existing assignment is not preempted by an earlier event', () => {
+  const state = createState(3);
+  const events = current(
+    makeEvent('A', '2026-11-06T16:00:00Z', '2026-11-06T20:00:00Z'),
+    makeEvent('B', '2026-11-06T16:30:00Z', '2026-11-06T20:30:00Z'),
+    makeEvent('C', '2026-11-06T17:00:00Z', '2026-11-06T21:00:00Z')
+  );
+  reconcile(state, events, Date.parse('2026-11-06T18:00:00Z'), options);
+
+  const withEarlier = current(
+    ...events.values(),
+    makeEvent('X', '2026-11-06T17:45:00Z', '2026-11-06T21:45:00Z')
+  );
+  reconcile(state, withEarlier, Date.parse('2026-11-06T18:10:00Z'), options);
+
+  assert.deepEqual(slotKeys(state), ['A', 'B', 'C']);
+});
+
+test('an assigned event keeps its slot until its end even when it disappears', () => {
+  const state = createState(3);
+  const a = makeEvent('A', '2026-11-06T16:00:00Z', '2026-11-06T20:00:00Z');
+  const b = makeEvent('B', '2026-11-06T16:30:00Z', '2026-11-06T20:30:00Z');
+  reconcile(state, current(a, b), Date.parse('2026-11-06T18:00:00Z'), options);
+  assert.deepEqual(slotKeys(state), ['A', 'B', null]);
+
+  reconcile(state, current(), Date.parse('2026-11-06T19:00:00Z'), options);
+  reconcile(state, current(), Date.parse('2026-11-06T19:30:00Z'), options);
+  assert.deepEqual(slotKeys(state), ['A', 'B', null]);
+
+  reconcile(state, current(), Date.parse('2026-11-06T20:31:00Z'), options);
+  assert.deepEqual(slotKeys(state), [null, null, null]);
+});
+
+test('an unassigned event that disappears twice is dropped from the queue', () => {
+  const state = createState(3);
+  const events = current(
+    makeEvent('A', '2026-11-06T16:00:00Z', '2026-11-06T20:00:00Z'),
+    makeEvent('B', '2026-11-06T16:30:00Z', '2026-11-06T20:30:00Z'),
+    makeEvent('C', '2026-11-06T17:00:00Z', '2026-11-06T21:00:00Z'),
+    makeEvent('D', '2026-11-06T17:30:00Z', '2026-11-06T21:30:00Z'),
+    makeEvent('E', '2026-11-06T18:00:00Z', '2026-11-06T22:00:00Z')
+  );
+
+  reconcile(state, events, Date.parse('2026-11-06T18:00:00Z'), options);
+  const withoutD = current(
+    events.get('A'),
+    events.get('B'),
+    events.get('C'),
+    events.get('E')
+  );
+
+  reconcile(state, withoutD, Date.parse('2026-11-06T18:20:00Z'), options);
+  reconcile(state, withoutD, Date.parse('2026-11-06T18:40:00Z'), options);
+  reconcile(state, withoutD, Date.parse('2026-11-06T20:01:00Z'), options);
+
+  assert.deepEqual(slotKeys(state), ['E', 'B', 'C']);
+});