Add unit tests for getUserCountryCode/getUserRegionCode

Verifies both getters delegate to the native module and resolve
null when the SDK reports the code as unknown (CMP-6852).

Author: nicolas-chaix-didomi

src/__tests__/Didomi.test.ts

@@ -0,0 +1,36 @@
+jest.mock('../specs/NativeDidomi', () => ({
+  __esModule: true,
+  default: {
+    getUserCountryCode: jest.fn(),
+    getUserRegionCode: jest.fn(),
+  },
+}));
+
+import { Didomi } from '../Didomi';
+import NativeDidomi from '../specs/NativeDidomi';
+
+const RNDidomi = NativeDidomi as any;
+
+describe('getUserCountryCode', () => {
+  it('resolves the value returned by the native module', async () => {
+    RNDidomi.getUserCountryCode.mockResolvedValue('FR');
+    await expect(Didomi.getUserCountryCode()).resolves.toBe('FR');
+  });
+
+  it('resolves null when unknown', async () => {
+    RNDidomi.getUserCountryCode.mockResolvedValue(null);
+    await expect(Didomi.getUserCountryCode()).resolves.toBeNull();
+  });
+});
+
+describe('getUserRegionCode', () => {
+  it('resolves the value returned by the native module', async () => {
+    RNDidomi.getUserRegionCode.mockResolvedValue('CA');
+    await expect(Didomi.getUserRegionCode()).resolves.toBe('CA');
+  });
+
+  it('resolves null when unknown', async () => {
+    RNDidomi.getUserRegionCode.mockResolvedValue(null);
+    await expect(Didomi.getUserRegionCode()).resolves.toBeNull();
+  });
+});