Suppress test analysis errors

Author: osa1

pkgs/fixnum/test/int32_test.dart

@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore_for_file: prefer_const_constructors
+
 import 'package:fixnum/fixnum.dart';
 import 'package:test/test.dart';
 

pkgs/fixnum/test/int64_test.dart

@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore_for_file: prefer_const_constructors
+
 // We permit local variable types in this test because they statically 'assert'
 // that the operations have an expected type.
 //