Serialize and resynthesize unresolved constant instance creations.

pkg/analyzer/test/src/summary/resynthesize_test.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 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 459 matching lines @@
         expect(o.elementAnnotation, isNull);
         expect(r.elementAnnotation, isNull);
       } else {
         fail('Not implemented for ${r.runtimeType} vs. ${o.runtimeType}');
       }
     }
   }
 
   void compareConstructorElements(ConstructorElement resynthesized,
       ConstructorElement original, String desc) {
+    if (original == null && resynthesized == null) {
+      return;
+    }
     compareExecutableElements(resynthesized, original, desc);
     if (original.isConst) {
       ConstructorElementImpl resynthesizedImpl =
           getActualElement(resynthesized, desc);
       ConstructorElementImpl originalImpl = getActualElement(original, desc);
       compareConstAstLists(resynthesizedImpl.constantInitializers,
           originalImpl.constantInitializers, desc);
     }
     if (original.redirectedConstructor == null) {
       expect(resynthesized.redirectedConstructor, isNull, reason: desc);
@@ skipping 960 matching lines @@
 class C {
   const C.named();
 }
 ''');
     checkLibrary(r'''
 import 'a.dart' as p;
 const V = const p.C.named();
 ''');
   }
 
+  test_const_invokeConstructor_named_unresolved() {
+    checkLibrary(
+        r'''
+class C {}
+const V = const C.named();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_named_unresolved2() {
+    checkLibrary(
+        r'''
+const V = const C.named();
+''',
+        allowErrors: true);
+  }
+

[Paul Berry, 2016/02/16 20:44:10]

Let's also add tests for cases involving prefixes, e.g.:

import 'a.dart' as p;
const V = const p.C.named();

(Test both the case where p.C exists but p.C.named() does not, as well as the
case where p.C does not exist)

[scheglov, 2016/02/16 21:48:44]

Done.

   test_const_invokeConstructor_unnamed() {
     checkLibrary(r'''
 class C {
   const C();
 }
 const V = const C();
 ''');
   }
 
   test_const_invokeConstructor_unnamed_imported() {
@@ skipping 17 matching lines @@
 class C {
   const C();
 }
 ''');
     checkLibrary(r'''
 import 'a.dart' as p;
 const V = const p.C();
 ''');
   }
 
+  test_const_invokeConstructor_unnamed_unresolved() {
+    checkLibrary(
+        r'''
+const V = const C();
+''',
+        allowErrors: true);
+  }
+

[Paul Berry, 2016/02/16 20:44:10]

Similarly, also test the case:

import 'a.dart' as p;
const V = const p.C();

where p.C does not exist.

[scheglov, 2016/02/16 21:48:44]

Done.

   test_const_length_ofClassConstField() {
     checkLibrary(r'''
 class C {
   static const String F = '';
 }
 const int v = C.F.length;
 ''');
   }
 
   test_const_length_ofClassConstField_imported() {
@@ skipping 2039 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }