[element model] migrate metadata_test

Change-Id: I29c0c6c71b04d5fb81990f97b68727a786c12022
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/400220
Reviewed-by: Brian Wilkerson <[email protected]>
Auto-Submit: Phil Quitslund <[email protected]>
Commit-Queue: Brian Wilkerson <[email protected]>

Author: pq

pkg/analyzer/analyzer_use_new_elements.txt

@@ -211,7 +211,6 @@ test/src/dart/resolution/constant_test.dart
 test/src/dart/resolution/context_collection_resolution.dart
 test/src/dart/resolution/generic_type_alias_test.dart
 test/src/dart/resolution/local_variable_test.dart
-test/src/dart/resolution/metadata_test.dart
 test/src/dart/resolution/prefix_element_test.dart
 test/src/dart/resolution/resolution.dart
 test/src/dart/resolution/scope_test.dart

pkg/analyzer/lib/dart/element/element2.dart

@@ -1807,7 +1807,7 @@ abstract class LocalFunctionFragment
 ///
 /// Clients may not extend, implement or mix-in this class.
 abstract class LocalVariableElement2
-    implements PromotableElement2, LocalElement2 {
+    implements PromotableElement2, LocalElement2, Annotatable {
   @override
   LocalVariableElement2 get baseElement;
 

pkg/analyzer/lib/src/dart/element/element.dart

@@ -7410,6 +7410,9 @@ class LocalVariableElementImpl2 extends PromotableElementImpl2
   @override
   LocalVariableElement2 get baseElement => this;
 
+  @override
+  String? get documentationComment => null;
+
   @override
   LocalVariableFragment get firstFragment => _wrappedElement;
 
@@ -7436,6 +7439,9 @@ class LocalVariableElementImpl2 extends PromotableElementImpl2
     return _wrappedElement.library2;
   }
 
+  @override
+  Metadata get metadata2 => wrappedElement.metadata2;
+
   @override
   DartType get type => _wrappedElement.type;
 

pkg/analyzer/test/src/dart/resolution/metadata_test.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/element2.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/test_utilities/find_element.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
@@ -267,8 +267,8 @@ Annotation
   element2: <testLibraryFragment>::@class::A::@constructor::new#element
 ''');
 
-    var localVariable = findElement.localVar('x');
-    var annotationOnElement = localVariable.metadata.single;
+    var localVariable = findElement2.localVar('x');
+    var annotationOnElement = localVariable.firstAnnotation;
     _assertElementAnnotationValueText(annotationOnElement, '''
 A
   a: int 3
@@ -1485,8 +1485,8 @@ import 'a.dart';
 void f(C c) {}
 ''');
 
-    var classC = findNode.namedType('C c').element!;
-    var annotation = classC.metadata.single;
+    var classC = findNode.namedType('C c').element2!;
+    var annotation = classC.firstAnnotation;
     _assertElementAnnotationValueText(annotation, r'''
 B
   a: A
@@ -1515,8 +1515,8 @@ import 'b.dart';
 void f(B b) {}
 ''');
 
-    var classB = findNode.namedType('B b').element!;
-    var annotation = classB.metadata.single;
+    var classB = findNode.namedType('B b').element2!;
+    var annotation = classB.firstAnnotation;
     _assertElementAnnotationValueText(annotation, r'''
 A
   f: int 42
@@ -1544,8 +1544,8 @@ import 'b.dart';
 void f(B b) {}
 ''');
 
-    var classB = findNode.namedType('B b').element!;
-    var annotation = classB.metadata.single;
+    var classB = findNode.namedType('B b').element2!;
+    var annotation = classB.firstAnnotation;
     _assertElementAnnotationValueText(annotation, r'''
 A
   f: int 42
@@ -2671,3 +2671,8 @@ int 42
     assertDartObjectText(value, expected);
   }
 }
+
+extension on Element2 {
+  ElementAnnotation get firstAnnotation =>
+      (this as Annotatable).metadata2.annotations.first;
+}