fix(core): make the commented-out test workable (google-gemini#3885)

Author: y-okt

packages/core/src/config/config.test.ts

@@ -12,7 +12,11 @@ import {
   DEFAULT_TELEMETRY_TARGET,
   DEFAULT_OTLP_ENDPOINT,
 } from '../telemetry/index.js';
-
+import {
+  AuthType,
+  createContentGeneratorConfig,
+} from '../core/contentGenerator.js';
+import { GeminiClient } from '../core/client.js';
 import { loadServerHierarchicalMemory } from '../utils/memoryDiscovery.js';
 
 // Mock dependencies that might be called during Config construction or createServerConfig
@@ -59,7 +63,7 @@ vi.mock('../core/contentGenerator.js', async (importOriginal) => {
 
 vi.mock('../core/client.js', () => ({
   GeminiClient: vi.fn().mockImplementation(() => ({
-    // Mock any methods on GeminiClient that might be used.
+    initialize: vi.fn().mockResolvedValue(undefined),
   })),
 }));
 
@@ -104,31 +108,33 @@ describe('Server Config (config.ts)', () => {
     vi.clearAllMocks();
   });
 
-  // i can't get vi mocking to import in core. only in cli. can't fix it now.
-  // describe('refreshAuth', () => {
-  //   it('should refresh auth and update config', async () => {
-  //     const config = new Config(baseParams);
-  //     const newModel = 'gemini-ultra';
-  //     const authType = AuthType.USE_GEMINI;
-  //     const mockContentConfig = {
-  //       model: newModel,
-  //       apiKey: 'test-key',
-  //     };
-
-  //     (createContentGeneratorConfig as vi.Mock).mockResolvedValue(
-  //       mockContentConfig,
-  //     );
-
-  //     await config.refreshAuth(authType);
-
-  //     expect(createContentGeneratorConfig).toHaveBeenCalledWith(
-  //       newModel,
-  //       authType,
-  //     );
-  //     expect(config.getContentGeneratorConfig()).toEqual(mockContentConfig);
-  //     expect(GeminiClient).toHaveBeenCalledWith(config);
-  //   });
-  // });
+  describe('refreshAuth', () => {
+    it('should refresh auth and update config', async () => {
+      const config = new Config(baseParams);
+      const authType = AuthType.USE_GEMINI;
+      const newModel = 'gemini-flash';
+      const mockContentConfig = {
+        model: newModel,
+        apiKey: 'test-key',
+      };
+
+      (createContentGeneratorConfig as Mock).mockResolvedValue(
+        mockContentConfig,
+      );
+
+      await config.refreshAuth(authType);
+
+      expect(createContentGeneratorConfig).toHaveBeenCalledWith(
+        MODEL, // Should be called with the original model 'gemini-pro'
+        authType,
+      );
+      // Verify that contentGeneratorConfig is updated with the new model
+      expect(config.getContentGeneratorConfig()).toEqual(mockContentConfig);
+      expect(config.getContentGeneratorConfig().model).toBe(newModel);
+      expect(config.getModel()).toBe(newModel); // getModel() should return the updated model
+      expect(GeminiClient).toHaveBeenCalledWith(config);
+    });
+  });
 
   it('Config constructor should store userMemory correctly', () => {
     const config = new Config(baseParams);