Add tests

apps/desktop/src/key-management/biometrics/os-biometrics-windows.service.spec.ts

@@ -73,10 +73,71 @@ describe("OsBiometricsServiceWindows", () => {
   describe("getOrCreateBiometricEncryptionClientKeyHalf", () => {
     const userId = "test-user-id" as UserId;
     const key = new SymmetricCryptoKey(new Uint8Array(64));
+    let encryptionService: EncryptService;
+    let cryptoFunctionService: CryptoFunctionService;
+
+    beforeEach(() => {
+      encryptionService = mock<EncryptService>();
+      cryptoFunctionService = mock<CryptoFunctionService>();
+      service = new OsBiometricsServiceWindows(
+        mock<I18nService>(),
+        null,
+        mock<LogService>(),
+        biometricStateService,
+        encryptionService,
+        cryptoFunctionService,
+      );
+    });
+
     it("should return null if getRequirePasswordOnRestart is false", async () => {
       biometricStateService.getRequirePasswordOnStart = jest.fn().mockResolvedValue(false);
       const result = await service.getOrCreateBiometricEncryptionClientKeyHalf(userId, key);
       expect(result).toBeNull();
     });
+
+    it("should return cached key half if already present", async () => {
+      biometricStateService.getRequirePasswordOnStart = jest.fn().mockResolvedValue(true);
+      const cachedKeyHalf = new Uint8Array([10, 20, 30]);
+      (service as any).clientKeyHalves.set(userId.toString(), cachedKeyHalf);
+      const result = await service.getOrCreateBiometricEncryptionClientKeyHalf(userId, key);
+      expect(result).toBe(cachedKeyHalf);
+    });
+
+    it("should decrypt and return existing encrypted client key half", async () => {
+      biometricStateService.getRequirePasswordOnStart = jest.fn().mockResolvedValue(true);
+      biometricStateService.getEncryptedClientKeyHalf = jest
+        .fn()
+        .mockResolvedValue(new Uint8Array([1, 2, 3]));
+      const decrypted = new Uint8Array([4, 5, 6]);
+      encryptionService.decryptBytes = jest.fn().mockResolvedValue(decrypted);
+
+      const result = await service.getOrCreateBiometricEncryptionClientKeyHalf(userId, key);
+
+      expect(biometricStateService.getEncryptedClientKeyHalf).toHaveBeenCalledWith(userId);
+      expect(encryptionService.decryptBytes).toHaveBeenCalledWith(new Uint8Array([1, 2, 3]), key);
+      expect(result).toEqual(decrypted);
+      expect((service as any).clientKeyHalves.get(userId.toString())).toEqual(decrypted);
+    });
+
+    it("should generate, encrypt, store, and cache a new key half if none exists", async () => {
+      biometricStateService.getRequirePasswordOnStart = jest.fn().mockResolvedValue(true);
+      biometricStateService.getEncryptedClientKeyHalf = jest.fn().mockResolvedValue(null);
+      const randomBytes = new Uint8Array([7, 8, 9]);
+      cryptoFunctionService.randomBytes = jest.fn().mockResolvedValue(randomBytes);
+      const encrypted = new Uint8Array([10, 11, 12]);
+      encryptionService.encryptBytes = jest.fn().mockResolvedValue(encrypted);
+      biometricStateService.setEncryptedClientKeyHalf = jest.fn().mockResolvedValue(undefined);
+
+      const result = await service.getOrCreateBiometricEncryptionClientKeyHalf(userId, key);
+
+      expect(cryptoFunctionService.randomBytes).toHaveBeenCalledWith(32);
+      expect(encryptionService.encryptBytes).toHaveBeenCalledWith(randomBytes, key);
+      expect(biometricStateService.setEncryptedClientKeyHalf).toHaveBeenCalledWith(
+        encrypted,
+        userId,
+      );
+      expect(result).toBeNull();
+      expect((service as any).clientKeyHalves.get(userId.toString())).toBeNull();
+    });
   });
 });