extract LocalConstructorContributor from local reference contributor

pkg/analysis_server/test/services/completion/local_reference_contributor_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 test.services.completion.dart.local;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart' as protocol
     show Element, ElementKind;
 import 'package:analysis_server/plugin/protocol/protocol.dart'
     hide Element, ElementKind;
@@ skipping 27 matching lines @@
         relevance: relevance);
   }
 
   @override
   CompletionSuggestion assertSuggestLocalClassTypeAlias(String name,
       {int relevance: DART_RELEVANCE_DEFAULT}) {
     return assertSuggestClassTypeAlias(name, relevance);
   }
 
   @override
-  CompletionSuggestion assertSuggestLocalConstructor(String name,
-      {int elemOffset}) {
-    return assertSuggestConstructor(name, elemOffset: elemOffset);
-  }
-
-  @override
   CompletionSuggestion assertSuggestLocalField(String name, String type,
       {int relevance: DART_RELEVANCE_LOCAL_FIELD, bool deprecated: false}) {
     return assertSuggestField(name, type,
         relevance: relevance, isDeprecated: deprecated);
   }
 
   @override
   CompletionSuggestion assertSuggestLocalFunction(
       String name, String returnType,
       {CompletionSuggestionKind kind: CompletionSuggestionKind.INVOCATION,
@@ skipping 572 matching lines @@
   }
 
   test_InstanceCreationExpression() {
     addTestSource('''
 class A {foo(){var f; {var x;}}}
 class B {B(this.x, [String boo]) { } int x;}
 class C {C.bar({boo: 'hoo', int z: 0}) { } }
 main() {new ^ String x = "hello";}''');
     computeFast();
     return computeFull((bool result) {
-      CompletionSuggestion suggestion;
-
-      suggestion = assertSuggestLocalConstructor('A', elemOffset: -1);
-      expect(suggestion.element.parameters, '()');
-      expect(suggestion.element.returnType, 'A');
-      expect(suggestion.declaringType, 'A');
-      expect(suggestion.parameterNames, hasLength(0));
-      expect(suggestion.requiredParameterCount, 0);
-      expect(suggestion.hasNamedParameters, false);
-
-      suggestion = assertSuggestLocalConstructor('B');
-      expect(suggestion.element.parameters, '(int x, [String boo])');
-      expect(suggestion.element.returnType, 'B');
-      expect(suggestion.declaringType, 'B');
-      expect(suggestion.parameterNames, hasLength(2));
-      expect(suggestion.parameterNames[0], 'x');
-      expect(suggestion.parameterTypes[0], 'int');
-      expect(suggestion.parameterNames[1], 'boo');
-      expect(suggestion.parameterTypes[1], 'String');
-      expect(suggestion.requiredParameterCount, 1);
-      expect(suggestion.hasNamedParameters, false);
-
-      suggestion = assertSuggestLocalConstructor('C.bar');
-      expect(suggestion.element.parameters, '({dynamic boo, int z})');
-      expect(suggestion.element.returnType, 'C');
-      expect(suggestion.declaringType, 'C');
-      expect(suggestion.parameterNames, hasLength(2));
-      expect(suggestion.parameterNames[0], 'boo');
-      expect(suggestion.parameterTypes[0], 'dynamic');
-      expect(suggestion.parameterNames[1], 'z');
-      expect(suggestion.parameterTypes[1], 'int');
-      expect(suggestion.requiredParameterCount, 0);
-      expect(suggestion.hasNamedParameters, true);
+      // Suggested by ConstructorContributor
+      assertNotSuggested('A');
+      assertNotSuggested('B');
+      assertNotSuggested('C.bar');
     });
   }
 
   test_method_parameters_mixed_required_and_named() {
     addTestSource('''
 class A {
   void m(x, {int y}) {}
 }
 class B extends A {
   main() {^}
@@ skipping 150 matching lines @@
     assertSuggestLocalVariable('ab', null);
     assertSuggestLocalVariable('_ab', null, relevance: DART_RELEVANCE_DEFAULT);
   }
 
   test_shadowed_name() {
     addTestSource('var a; class A { var a; m() { ^ } }');
     expect(computeFast(), isTrue);
     assertSuggestLocalField('a', null);
   }
 }