Fix invalid initializing formal by adding a field

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 2def8d4569a91c3f3c473f2d7bd605b0684c1d73..84102080a647f0c5d2a93824c02e7869d1f32b8b 100644
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ b/pkg/analysis_server/test/services/correction/fix_test.dart
@@ -1957,6 +1957,40 @@ main(C c) {
 ''');
   }
 
+  test_createField_invalidInitializer_withoutType() async {
+    await resolveTestUnit('''
+class C {
+  C(this.text);
+}
+''');
+    await assertHasFix(
+        DartFixKind.CREATE_FIELD,
+        '''
+class C {
+  var text;
+
+  C(this.text);
+}
+''');
+  }
+
+  test_createField_invalidInitializer_withType() async {
+    await resolveTestUnit('''
+class C {
+  C(String this.text);
+}
+''');
+    await assertHasFix(
+        DartFixKind.CREATE_FIELD,
+        '''
+class C {
+  String text;
+
+  C(String this.text);
+}
+''');
+  }
+
   test_createField_setter_generic_BAD() async {
     await resolveTestUnit('''
 class A {