Replace ResolvedNode by ConstantExpression.

pkg/docgen/test/metadata_test.dart

+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// 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.
+
+library async_await_test;
+
+import 'dart:io';
+
+import 'package:path/path.dart' as path;
+import 'package:unittest/unittest.dart';
+
+import '../lib/src/exports/mirrors_util.dart' as dart2js_util;
+import '../lib/src/models/annotation.dart';
+import '../lib/docgen.dart';
+
+const Map<String, String> SOURCES = const <String, String>{
+  'main.dart': '''
+import 'lib.dart' as lib;
+
+@lib.Annotation("foo", 42)
+main() {
+}
+''',
+  'lib.dart': '''
+class Annotation {
+  final String arg1;
+  final int arg2;
+  const Annotation(this.arg1, this.arg2);
+}
+'''};
+
+main() {
+  group('Generate docs for', () {
+    test('files with annotations', () {
+      var temporaryDir = Directory.systemTemp.createTempSync('metadata_');
+      var uris = <Uri>[];
+      SOURCES.forEach((name, code) {
+        var fileName = path.join(temporaryDir.path, name);
+        var file = new File(fileName);
+        file.writeAsStringSync(code);
+        uris.add(new Uri.file(fileName));
+      });
+
+      return getMirrorSystem(uris, false).then((mirrorSystem) {
+        var library = new Library(mirrorSystem.libraries[uris[0]]);
+        expect(library is Library, isTrue);
+
+        var main = library.functions['main'];
+        expect(main is Method, isTrue);
+
+        var annotations = main.annotations;
+        expect(annotations.length, equals(1));
+
+        var annotation = annotations[0];
+        expect(annotation is Annotation, isTrue);
+
+        var map = annotation.toMap();
+        expect(map['name'], equals('lib-dart.Annotation.Annotation-'));
+        expect(map['parameters'].length, equals(2));
+        expect(map['parameters'][0], equals('"foo"'));
+        expect(map['parameters'][1], equals('42'));
+      }).whenComplete(() => temporaryDir.deleteSync(recursive: true));
+    });
+  });
+}