mirror of
https://github.com/Psychotoxical/psysonic.git
synced 2026-07-21 23:05:46 +00:00
Frank Stellmacher
3a99be4daa
Three coordinating mutables move into `src/store/gaplessPreloadState.ts`
behind a thin API:
- `gaplessPreloadingId` / `bytePreloadingId` — guards so the runtime
doesn't fire a chain-/byte-preload twice for the same id
- `lastGaplessSwitchTime` — timestamp used by the 500–600 ms
ghost-IPC suppression guards in `handleAudioEnded` and `playTrack`
Public API: `get…` / `set…` accessors plus `clearPreloadingIds`
(atomic clear of both guards — collapses three `= null; = null;`
duplications) and `markGaplessSwitch` (`Date.now()` stamp). The
mutables are no longer reachable from outside the module.
13 focused tests pin the get/set round-trips, independence between
the two guards, the atomic clear, and the timestamp progression.
playerStore 3208 → 3207 LOC (small delta because the `= null; = null;`
inlines compress to single `clearPreloadingIds()` calls but the
module itself adds the accessor functions to the import list).
92 lines
2.5 KiB
TypeScript
92 lines
2.5 KiB
TypeScript
/**
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* Three mutables that coordinate the gapless preloader. Most of the surface
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* is straight get/set — the interesting bit is `clearPreloadingIds` (atomic
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* clear of both) and `markGaplessSwitch` (timestamp side effect).
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*/
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import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
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import {
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_resetGaplessPreloadStateForTest,
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clearPreloadingIds,
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getBytePreloadingId,
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getGaplessPreloadingId,
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getLastGaplessSwitchTime,
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markGaplessSwitch,
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setBytePreloadingId,
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setGaplessPreloadingId,
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} from './gaplessPreloadState';
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beforeEach(() => {
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vi.useFakeTimers();
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vi.setSystemTime(new Date('2026-05-12T12:00:00Z'));
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});
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afterEach(() => {
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_resetGaplessPreloadStateForTest();
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vi.useRealTimers();
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});
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describe('initial state', () => {
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it('is null / 0 for unread accessors', () => {
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expect(getGaplessPreloadingId()).toBeNull();
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expect(getBytePreloadingId()).toBeNull();
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expect(getLastGaplessSwitchTime()).toBe(0);
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});
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});
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describe('preloading-id accessors', () => {
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it('round-trips through the gapless guard', () => {
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setGaplessPreloadingId('t1');
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expect(getGaplessPreloadingId()).toBe('t1');
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});
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it('round-trips through the byte guard', () => {
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setBytePreloadingId('t2');
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expect(getBytePreloadingId()).toBe('t2');
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});
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it('keeps the two guards independent', () => {
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setGaplessPreloadingId('a');
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setBytePreloadingId('b');
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expect(getGaplessPreloadingId()).toBe('a');
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expect(getBytePreloadingId()).toBe('b');
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});
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it('accepts null to clear a guard', () => {
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setGaplessPreloadingId('a');
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setGaplessPreloadingId(null);
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expect(getGaplessPreloadingId()).toBeNull();
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});
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});
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describe('clearPreloadingIds', () => {
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it('clears both guards atomically', () => {
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setGaplessPreloadingId('a');
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setBytePreloadingId('b');
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clearPreloadingIds();
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expect(getGaplessPreloadingId()).toBeNull();
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expect(getBytePreloadingId()).toBeNull();
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});
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it('does not touch the gapless-switch timestamp', () => {
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markGaplessSwitch();
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const before = getLastGaplessSwitchTime();
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clearPreloadingIds();
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expect(getLastGaplessSwitchTime()).toBe(before);
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});
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});
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describe('markGaplessSwitch', () => {
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it('stamps Date.now()', () => {
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markGaplessSwitch();
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expect(getLastGaplessSwitchTime()).toBe(Date.now());
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});
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it('overwrites on a later call', () => {
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markGaplessSwitch();
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const first = getLastGaplessSwitchTime();
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vi.advanceTimersByTime(700);
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markGaplessSwitch();
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expect(getLastGaplessSwitchTime()).toBeGreaterThan(first);
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});
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});
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