Support for extract property for methods.

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

 // Copyright (c) 2016, 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 analyzer.test.src.summary.resynthesize_ast_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/generated/engine.dart'
@@ skipping 276 matching lines @@
 class B {
   int c;
 }
 var a = new A();
 var v = a.b.foo.c;
   ''');
     expect(unit.topLevelVariables[1].type.toString(), 'dynamic');
   }
 
   void test_infer_extractProperty_method() {
-    checkFile(r'''
+    var unit = checkFile(r'''
+class A {
+  int m(double p1, String p2) => 42;
+}
+var a = new A();
+var v = a.m;
+  ''');
+    expect(unit.topLevelVariables[1].type.toString(), '(double, String) → int');
+  }
+
+  void test_infer_extractProperty_method2() {
+    var unit = checkFile(r'''
 var a = 1.round;
   ''');
+    expect(unit.topLevelVariables[0].type.toString(), '() → int');
+  }
+
+  void test_infer_extractProperty_method_sequence() {
+    var unit = checkFile(r'''
+class A {
+  B b = new B();
+}
+class B {
+  C c = new C();
+}
+class C {
+  int m(double p1, String p2) => 42;
+}
+var a = new A();
+var v = a.b.c.m;
+  ''');
+    expect(unit.topLevelVariables[1].type.toString(), '(double, String) → int');
   }
 
   void test_infer_invokeConstructor_factoryRedirected() {
     checkFile(r'''
 class A {
   factory A() = B;
 }
 class B implements A {}
 var a = new A();
   ''');
@@ skipping 308 matching lines @@
     }
 
     UnlinkedUnit definingUnit = _getUnlinkedUnit(librarySource);
     LinkedLibraryBuilder linkedLibrary =
         prelink(definingUnit, getPart, getImport);
     linkedLibrary.dependencies.skip(1).forEach((LinkedDependency d) {
       _serializeLibrary(resolveRelativeUri(d.uri));
     });
   }
 }