Issue 22044. A changes in annotations should be considered as a mismatch.

pkg/analyzer/test/generated/incremental_resolver_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 engine.incremental_resolver_test;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 52 matching lines @@
 }
 
 
 @ReflectiveTestCase()
 class DeclarationMatcherTest extends ResolverTestCase {
   void setUp() {
     super.setUp();
     test_resolveApiChanges = true;
   }
 
+  void test_false_class_annotation_edit() {
+    _assertDoesNotMatch(r'''
+const my_annotationA = const Object();
+const my_annotationB = const Object();
+@my_annotationA
+class A {
+}
+''', r'''
+const my_annotationA = const Object();
+const my_annotationB = const Object();
+@my_annotationB
+class A {
+}
+''');
+  }
+
+  void test_false_class_annotations_add() {
+    _assertDoesNotMatch(r'''
+const my_annotation = const Object();
+class A {
+}
+''', r'''
+const my_annotation = const Object();
+@my_annotation
+class A {
+}
+''');
+  }
+
+  void test_false_class_annotations_remove() {
+    _assertDoesNotMatch(r'''
+const my_annotation = const Object();
+@my_annotation
+class A {
+}
+''', r'''
+const my_annotation = const Object();
+class A {
+}
+''');
+  }
+
   void test_false_class_list_add() {
     _assertDoesNotMatch(r'''
 class A {}
 class B {}
 ''', r'''
 class A {}
 class B {}
 class C {}
 ''');
   }
@@ skipping 721 matching lines @@
   }
 
   void test_false_import_show_remove() {
     _assertDoesNotMatch(r'''
 import 'dart:async' show Future, Stream;
 ''', r'''
 import 'dart:async' show Future;
 ''');
   }
 
+  void test_false_method_annotation_edit() {
+    _assertDoesNotMatchOK(r'''
+const my_annotationA = const Object();
+const my_annotationB = const Object();
+class A {
+  @my_annotationA
+  void m() {}
+}
+''', r'''
+const my_annotationA = const Object();
+const my_annotationB = const Object();
+class A {
+  @my_annotationB
+  void m() {}
+}
+''');
+  }
+
+  void test_false_method_annotations_add() {
+    _assertDoesNotMatchOK(r'''
+const my_annotation = const Object();
+class A {
+  void m() {}
+}
+''', r'''
+const my_annotation = const Object();
+class A {
+  @my_annotation
+  void m() {}
+}
+''');
+  }
+
+  void test_false_method_annotations_remove() {
+    _assertDoesNotMatchOK(r'''
+const my_annotation = const Object();
+class A {
+  @my_annotation
+  void m() {}
+}
+''', r'''
+const my_annotation = const Object();
+class A {
+  void m() {}
+}
+''');
+  }
+
   void test_false_method_list_add() {
     _assertDoesNotMatchOK(r'''
 class A {
   a() {}
   b() {}
 }
 ''', r'''
 class A {
   a() {}
   b() {}
@@ skipping 352 matching lines @@
 class A {}
 class B {}
 class C extends Object with A, B {}
 ''', r'''
 class A {}
 class B {}
 class C extends Object with B, A {}
 ''');
   }
 
+  void test_true_class_annotations_same() {
+    _assertMatches(r'''
+const my_annotation = const Object();
+@my_annotation
+class A {
+}
+''', r'''
+const my_annotation = const Object();
+@my_annotation
+class A {
+}
+''');
+  }
+
   void test_true_class_list_reorder() {
     _assertMatches(r'''
 class A {}
 class B {}
 class C {}
 ''', r'''
 class C {}
 class A {}
 class B {}
 ''');
@@ skipping 408 matching lines @@
   }
 
   void test_true_import_show_reorder() {
     _assertMatches(r'''
 import 'dart:async' show Future, Stream;
 ''', r'''
 import 'dart:async' show Stream, Future;
 ''');
   }
 
+  void test_true_method_annotations_same() {
+    _assertMatches(r'''
+const my_annotation = const Object();
+class A {
+  @my_annotation
+  void m() {}
+}
+''', r'''
+const my_annotation = const Object();
+class A {
+  @my_annotation
+  void m() {}
+}
+''');
+  }
+
   void test_true_method_list_reorder() {
     _assertMatches(r'''
 class A {
   a() {}
   b() {}
   c() {}
 }
 ''', r'''
 class A {
   c() {}
@@ skipping 1778 matching lines @@
   }
 }
 
 
 class _Edit {
   final int offset;
   final int length;
   final String replacement;
   _Edit(this.offset, this.length, this.replacement);
 }