init with react+axum+spacetimedb

src/persistence/gameSettingsStorage.test.ts

@@ -0,0 +1,83 @@
+import {afterEach, describe, expect, it, vi} from 'vitest';
+
+import {
+  clampVolume,
+  DEFAULT_MUSIC_VOLUME,
+  normalizePlatformTheme,
+  readSavedSettings,
+  writeSavedSettings,
+} from './gameSettingsStorage';
+import type {JsonStorage} from './storage';
+
+function createMemoryStorage(): JsonStorage {
+  const values = new Map<string, string>();
+
+  return {
+    getItem(key) {
+      return values.has(key) ? values.get(key)! : null;
+    },
+    setItem(key, value) {
+      values.set(key, value);
+    },
+    removeItem(key) {
+      values.delete(key);
+    },
+  };
+}
+
+describe('gameSettingsStorage', () => {
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  it('falls back to defaults when nothing has been saved', () => {
+    vi.stubGlobal('window', {localStorage: createMemoryStorage()});
+
+    expect(readSavedSettings()).toEqual({
+      musicVolume: DEFAULT_MUSIC_VOLUME,
+      platformTheme: 'light',
+    });
+  });
+
+  it('reads legacy unversioned payloads and clamps the volume', () => {
+    const storage = createMemoryStorage();
+    storage.setItem('tavernrealms.settings.v1', JSON.stringify({musicVolume: 2}));
+    vi.stubGlobal('window', {localStorage: storage});
+
+    expect(readSavedSettings()).toEqual({
+      musicVolume: 1,
+      platformTheme: 'light',
+    });
+  });
+
+  it('reads stored platform theme when available', () => {
+    const storage = createMemoryStorage();
+    storage.setItem(
+      'tavernrealms.settings.v1',
+      JSON.stringify({musicVolume: 0.5, platformTheme: 'dark'}),
+    );
+    vi.stubGlobal('window', {localStorage: storage});
+
+    expect(readSavedSettings()).toEqual({
+      musicVolume: 0.5,
+      platformTheme: 'dark',
+    });
+    expect(normalizePlatformTheme('unknown')).toBe('light');
+  });
+
+  it('writes versioned settings payloads', () => {
+    const storage = createMemoryStorage();
+    vi.stubGlobal('window', {localStorage: storage});
+
+    writeSavedSettings({
+      musicVolume: clampVolume(0.6),
+      platformTheme: 'dark',
+    });
+
+    expect(JSON.parse(storage.getItem('tavernrealms.settings.v1') ?? '{}')).toEqual({
+      version: 1,
+      musicVolume: 0.6,
+      platformTheme: 'dark',
+    });
+  });
+});