Issue 23518. Match prefixes of prefixed types.

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 1246 matching lines @@
   }
 }
 ''', r'''
 class A {
   m(String p) {
   }
 }
 ''');
   }
 
+  void test_false_method_parameters_type_edit_insertImportPrefix() {
+    _assertDoesNotMatchOK(r'''
+import 'dart:async' as a;
+
+class C {
+  void foo(Future f) {}
+}
+
+class Future {}
+
+bar(C c, a.Future f) {
+  c.foo(f);
+}
+''', r'''
+import 'dart:async' as a;
+
+class C {
+  void foo(a.Future f) {}
+}
+
+class Future {}
+
+bar(C c, a.Future f) {
+  c.foo(f);
+}
+''');
+  }
+
   void test_false_method_returnType_edit() {
     _assertDoesNotMatchOK(r'''
 class A {
   int m() {}
 }
 ''', r'''
 class A {
   String m() {}
 }
 ''');
@@ skipping 918 matching lines @@
   m(F p) {}
 }
 ''', r'''
 typedef F();
 class A {
   m(F p) {}
 }
 ''');
   }
 
+  void test_true_method_parameters_type_sameImportPrefix() {
+    _assertMatches(r'''
+import 'dart:async' as a;
+
+bar(a.Future f) {
+  print(f);
+}
+''', r'''
+import 'dart:async' as a;
+
+bar(a.Future ff) {
+  print(ff);
+}
+''');
+  }
+
   void test_true_part_list_reorder() {
     addNamedSource('/unitA.dart', 'part of lib; class A {}');
     addNamedSource('/unitB.dart', 'part of lib; class B {}');
     _assertMatches(r'''
 library lib;
 part 'unitA.dart';
 part 'unitB.dart';
 ''', r'''
 library lib;
 part 'unitB.dart';
@@ skipping 1885 matching lines @@
     return ResolutionContextBuilder.contextFor(node, listener).scope;
   }
 }
 
 class _Edit {
   final int offset;
   final int length;
   final String replacement;
   _Edit(this.offset, this.length, this.replacement);
 }