Add projects

frontend/tests/providerConcurrency.test.ts

@@ -0,0 +1,44 @@
+import { describe, expect, test } from 'vitest';
+import {
+  appendLatestProviderRecord,
+  replaceLatestProviderRecord,
+} from '../src/services/api/providers';
+
+const mergeRecord = (raw: unknown, payload: Record<string, unknown>) => ({
+  ...(raw as Record<string, unknown> | undefined),
+  ...payload,
+});
+
+describe('provider list concurrency', () => {
+  test('preserves concurrent additions while appending a provider', () => {
+    const latest = [
+      { 'api-key': 'existing', custom: 'keep' },
+      { 'api-key': 'concurrent', custom: 'also-keep' },
+    ];
+
+    expect(appendLatestProviderRecord(latest, { 'api-key': 'created' }, mergeRecord)).toEqual([
+      { 'api-key': 'existing', custom: 'keep' },
+      { 'api-key': 'concurrent', custom: 'also-keep' },
+      { 'api-key': 'created' },
+    ]);
+  });
+
+  test('replaces only the selected provider in the latest list', () => {
+    const latest = [
+      { 'api-key': 'existing', custom: 'keep' },
+      { 'api-key': 'concurrent', custom: 'also-keep' },
+    ];
+
+    expect(
+      replaceLatestProviderRecord(
+        latest,
+        (record) => record['api-key'] === 'existing',
+        { 'api-key': 'updated' },
+        mergeRecord
+      )
+    ).toEqual([
+      { 'api-key': 'updated', custom: 'keep' },
+      { 'api-key': 'concurrent', custom: 'also-keep' },
+    ]);
+  });
+});