Pass ElementImpl as a context for resynthesizing types.

pkg/analyzer/test/src/summary/resynthesize_common.dart

 // Copyright (c) 2015, 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 test.src.serialization.elements_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 8531 matching lines @@
       checkElementText(
           library,
           r'''
 class C<T, U> {
   static void m<V, W>(V v, W w) {}
 }
 ''');
     }
   }
 
+  test_genericFunction_asFunctionReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+int Function(int a, String b) f() => null;
+''');
+    checkElementText(
+        library,
+        r'''
+(int, String) → int f() {}
+''');
+  }
+
+  test_genericFunction_asFunctionTypedParameterReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+void f(int Function(int a, String b) p(num c)) => null;
+''');
+    checkElementText(
+        library,
+        r'''
+void f((num) → (int, String) → int p) {}
+''');
+  }
+
+  test_genericFunction_asGenericFunctionReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+typedef F = void Function(String a) Function(int b);
+''');
+    checkElementText(
+        library,
+        r'''
+typedef F = (String) → void Function(int b);
+''');
+  }
+
+  test_genericFunction_asMethodReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+class C {
+  int Function(int a, String b) m() => null;
+}
+''');
+    checkElementText(
+        library,
+        r'''
+class C {
+  (int, String) → int m() {}
+}
+''');
+  }
+
+  test_genericFunction_asParameterType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+void f(int Function(int a, String b) p) => null;
+''');
+    checkElementText(
+        library,
+        r'''
+void f((int, String) → int p) {}
+''');
+  }
+
+  test_genericFunction_asTopLevelVariableType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+int Function(int a, String b) v;
+''');
+    checkElementText(
+        library,
+        r'''
+(int, String) → int v;
+''');
+  }
+
   test_getElement_constructor_named() {
     String text = 'class C { C.named(); }';
     Source source = addLibrarySource('/test.dart', text);
     ConstructorElement original = context
         .computeLibraryElement(source)
         .getType('C')
         .getNamedConstructor('named');
     expect(original, isNotNull);
     ConstructorElement resynthesized = validateGetElement(text, original);
     compareConstructorElements(resynthesized, original, 'C.constructor named');
@@ skipping 6630 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }