analyzer: Test that @awaitNotRequired on a declaring parameter works

Work towards #62254

Change-Id: Ic00093370d85a3ab2f0dd0101fafb087c987c6f9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/475401
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>

Author: srawlins

pkg/analyzer/test/src/diagnostics/invalid_await_not_required_annotation_test.dart

@@ -119,6 +119,13 @@ class C {
 ''');
   }
 
+  test_valid_field_futureReturnType_originPrimaryConstructor() async {
+    await assertNoErrorsInCode('''
+import 'package:meta/meta.dart';
+class C(@awaitNotRequired final Future<int> x);
+''');
+  }
+
   test_valid_function_futureOrReturnType() async {
     await assertNoErrorsInCode('''
 import 'dart:async';

pkg/linter/test/rules/unawaited_futures_test.dart

@@ -288,6 +288,16 @@ abstract class C {
 ''');
   }
 
+  test_instanceProperty_unawaited_awaitNotRequired_originPrimaryConstructor() async {
+    await assertNoDiagnostics(r'''
+import 'package:meta/meta.dart';
+void f(C c) async {
+  c.p;
+}
+abstract class C(@awaitNotRequired final Future<int> p);
+''');
+  }
+
   test_instanceProperty_unawaited_awaitNotRequiredInherited() async {
     await assertNoDiagnostics(r'''
 import 'package:meta/meta.dart';