Issue 25622. Quick fix for 'async-for'.

pkg/analysis_server/test/services/correction/fix_test.dart

Index: pkg/analysis_server/test/services/correction/fix_test.dart
diff --git a/pkg/analysis_server/test/services/correction/fix_test.dart b/pkg/analysis_server/test/services/correction/fix_test.dart
index 7ce9b90363356bbac3d4d16e0a5b4d05fdb2e6a0..24d3f1894809ebb2fe432d724c5096cbb4e953c3 100644
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ b/pkg/analysis_server/test/services/correction/fix_test.dart
@@ -349,6 +349,27 @@ class A {}
 ''');
   }
 
+  test_addSync_asyncFor() async {
+    resolveTestUnit('''
+import 'dart:async';
+main(Stream<String> names) {
+  await for (String name in names) {
+    print(name);
+  }
+}
+''');
+    await assertHasFix(
+        DartFixKind.ADD_ASYNC,
+        '''
+import 'dart:async';
+main(Stream<String> names) async {
+  await for (String name in names) {
+    print(name);
+  }
+}
+''');
+  }
+
   test_addSync_BAD_nullFunctionBody() async {
     resolveTestUnit('''
 var F = await;