add init unit tests

Author: msonnb

packages/aws-serverless/test/init.test.ts

@@ -0,0 +1,61 @@
+import { getSDKSource } from '@sentry/core';
+import type { NodeOptions } from '@sentry/node';
+import { initWithoutDefaultIntegrations } from '@sentry/node';
+import { describe, expect, test, vi } from 'vitest';
+import { init } from '../src/init';
+
+vi.mock('@sentry/core', async importOriginal => ({
+  ...(await importOriginal()),
+  getSDKSource: vi.fn(),
+}));
+
+vi.mock('@sentry/node', async importOriginal => ({
+  ...(await importOriginal()),
+  initWithoutDefaultIntegrations: vi.fn(),
+}));
+
+const mockGetSDKSource = vi.mocked(getSDKSource);
+const mockInitWithoutDefaultIntegrations = vi.mocked(initWithoutDefaultIntegrations);
+
+describe('init', () => {
+  test('should preserve user-provided tunnel option when SDK source is aws-lambda-layer', () => {
+    mockGetSDKSource.mockReturnValue('aws-lambda-layer');
+    const options: NodeOptions = {
+      tunnel: 'https://custom-tunnel.example.com',
+    };
+
+    init(options);
+
+    expect(mockInitWithoutDefaultIntegrations).toHaveBeenCalledWith(
+      expect.objectContaining({
+        tunnel: 'https://custom-tunnel.example.com',
+      }),
+    );
+  });
+
+  test('should set default tunnel when SDK source is aws-lambda-layer and no tunnel provided', () => {
+    mockGetSDKSource.mockReturnValue('aws-lambda-layer');
+    const options: NodeOptions = {};
+
+    init(options);
+
+    expect(mockInitWithoutDefaultIntegrations).toHaveBeenCalledWith(
+      expect.objectContaining({
+        tunnel: 'http://localhost:9000/envelope',
+      }),
+    );
+  });
+
+  test('should not set tunnel when SDK source is not aws-lambda-layer', () => {
+    mockGetSDKSource.mockReturnValue('npm');
+    const options: NodeOptions = {};
+
+    init(options);
+
+    expect(mockInitWithoutDefaultIntegrations).toHaveBeenCalledWith(
+      expect.not.objectContaining({
+        tunnel: expect.any(String),
+      }),
+    );
+  });
+});