add test: manual instrumentation works in server routes

dev-packages/e2e-tests/test-applications/tanstackstart-react/src/routes/api.error.ts

@@ -0,0 +1,18 @@
+import * as Sentry from '@sentry/tanstackstart-react';
+import { createFileRoute } from '@tanstack/react-router'
+
+export const Route = createFileRoute('/api/error')({
+    server: {
+        handlers: {
+            GET: async () => {
+                // This will throw a server-side error that Sentry should catch
+                try {
+                    throw new Error('Sentry API Route Test Error');
+                } catch (error) {
+                    Sentry.captureException(error);
+                    throw error;
+                }
+            },
+        },
+    },
+});

dev-packages/e2e-tests/test-applications/tanstackstart-react/src/routes/index.tsx

@@ -28,6 +28,14 @@ function Home() {
       >
         Break server function
       </button>
+      <button
+        type="button"
+        onClick={async () => {
+          await fetch('/api/error');
+        }}
+      >
+        Break API route
+      </button>
     </div>
   );
 }

dev-packages/e2e-tests/test-applications/tanstackstart-react/tests/errors.test.ts

@@ -60,3 +60,33 @@ test('Sends server-side function error to Sentry with auto-instrumentation', asy
 
   expect(errorEvent.transaction).toBe('/');
 });
+
+test('Sends API route error to Sentry if manually instrumented', async ({ page }) => {
+  const errorEventPromise = waitForError('tanstackstart-react', errorEvent => {
+    return errorEvent?.exception?.values?.[0]?.value === 'Sentry API Route Test Error';
+  });
+
+  await page.goto(`/`);
+
+  await expect(page.locator('button').filter({ hasText: 'Break API route' })).toBeVisible();
+
+  await page.locator('button').filter({ hasText: 'Break API route' }).click();
+
+  const errorEvent = await errorEventPromise;
+
+  expect(errorEvent).toMatchObject({
+    exception: {
+      values: [
+        {
+          type: 'Error',
+          value: 'Sentry API Route Test Error',
+          mechanism: {
+            handled: true,
+          },
+        },
+      ],
+    },
+  });
+
+  expect(errorEvent.transaction).toBe('GET /api/error');
+});