feat: synchronize account icons across game profiles

app/game-api/test/bestEffortResourceCloser.test.ts

@@ -0,0 +1,55 @@
+import { describe, expect, it, vi } from 'vitest';
+
+import { createBestEffortResourceCloser } from '../src/services/bestEffortResourceCloser.js';
+
+describe('createBestEffortResourceCloser', () => {
+    it('continues after a failed step and retries only the unfinished step', async () => {
+        const calls: string[] = [];
+        let rejectMiddle = true;
+        const close = createBestEffortResourceCloser([
+            {
+                name: 'first',
+                run: async () => {
+                    calls.push('first');
+                },
+            },
+            {
+                name: 'middle',
+                run: async () => {
+                    calls.push('middle');
+                    if (rejectMiddle) throw new Error('temporary failure');
+                },
+            },
+            {
+                name: 'last',
+                run: async () => {
+                    calls.push('last');
+                },
+            },
+        ]);
+
+        await expect(close()).rejects.toThrow('One or more resources failed to close.');
+        expect(calls).toEqual(['first', 'middle', 'last']);
+
+        rejectMiddle = false;
+        await close();
+        await close();
+        expect(calls).toEqual(['first', 'middle', 'last', 'middle']);
+    });
+
+    it('shares one in-flight close across concurrent callers', async () => {
+        let release: (() => void) | undefined;
+        const pending = new Promise<void>((resolve) => {
+            release = resolve;
+        });
+        const run = vi.fn(async () => pending);
+        const close = createBestEffortResourceCloser([{ name: 'only', run }]);
+
+        const first = close();
+        const second = close();
+        expect(run).toHaveBeenCalledTimes(1);
+        release?.();
+        await Promise.all([first, second]);
+        expect(run).toHaveBeenCalledTimes(1);
+    });
+});