test(rsc-mf): assert callback wiring stays in runtime modules

Author: cursoragent

tests/integration/rsc-mf/tests/index.test.ts

@@ -1,3 +1,4 @@
+import fs from 'fs';
 import path from 'path';
 import { isVersionAtLeast18 } from '@modern-js/utils';
 import type { Browser, Page } from 'puppeteer';
@@ -435,6 +436,30 @@ function runTests({ mode }: TestConfig) {
       expect(exposedPaths).not.toContain('./registerServerCallback');
     });
 
+    it('should keep callback runtime wiring out of component sources', () => {
+      const remoteClientCounterSource = fs.readFileSync(
+        path.join(remoteDir, 'src/components/RemoteClientCounter.tsx'),
+        'utf-8',
+      );
+      const remoteClientBadgeSource = fs.readFileSync(
+        path.join(remoteDir, 'src/components/RemoteClientBadge.tsx'),
+        'utf-8',
+      );
+      const runtimeInitSource = fs.readFileSync(
+        path.join(remoteDir, 'src/runtime/initServerCallback.ts'),
+        'utf-8',
+      );
+      expect(remoteClientCounterSource).not.toContain('initServerCallback');
+      expect(remoteClientCounterSource).not.toContain(
+        'registerRemoteServerCallback',
+      );
+      expect(remoteClientBadgeSource).not.toContain('initServerCallback');
+      expect(remoteClientBadgeSource).not.toContain(
+        'registerRemoteServerCallback',
+      );
+      expect(runtimeInitSource).toContain('registerRemoteServerCallback');
+    });
+
     it('should not load callback helper expose chunk', () => {
       expect(registerCallbackExposeRequestUrls).toEqual([]);
     });