add functional type alias suggestions

pkg/analysis_server/test/services/completion/completion_test_util.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.util;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' as protocol show Element,
     ElementKind;
@@ skipping 118 matching lines @@
     String param = element.parameters;
     expect(param, isNotNull);
     expect(param[0], equals('('));
     expect(param[param.length - 1], equals(')'));
     expect(
         element.returnType,
         equals(returnType != null ? returnType : 'dynamic'));
     return cs;
   }
 
+  CompletionSuggestion assertSuggestFunctionTypeAlias(String name,
+      String returnType, bool isDeprecated, [CompletionRelevance relevance =
+      CompletionRelevance.DEFAULT]) {
+    CompletionSuggestion cs = assertSuggest(
+        CompletionSuggestionKind.FUNCTION_TYPE_ALIAS,
+        name,
+        relevance,
+        isDeprecated);
+    expect(cs.returnType, equals(returnType));
+    protocol.Element element = cs.element;
+    expect(element, isNotNull);
+    expect(element.kind, equals(protocol.ElementKind.FUNCTION_TYPE_ALIAS));
+    expect(element.name, equals(name));
+    expect(element.isDeprecated, equals(isDeprecated));
+    // TODO (danrubel) Determine why params are null
+//    String param = element.parameters;
+//    expect(param, isNotNull);
+//    expect(param[0], equals('('));
+//    expect(param[param.length - 1], equals(')'));
+    // TODO (danrubel) Determine why return type is null
+//    expect(
+//        element.returnType,
+//        equals(returnType != null ? returnType : 'dynamic'));
+    return cs;
+  }
+
   CompletionSuggestion assertSuggestGetter(String name, String returnType,
       [CompletionRelevance relevance = CompletionRelevance.DEFAULT]) {
     CompletionSuggestion cs =
         assertSuggest(CompletionSuggestionKind.GETTER, name, relevance);
     expect(cs.returnType, equals(returnType));
     protocol.Element element = cs.element;
     expect(element, isNotNull);
     expect(element.kind, equals(protocol.ElementKind.GETTER));
     expect(element.name, equals(name));
     //TODO (danrubel) getter should have parameters
@@ skipping 270 matching lines @@
   CompletionSuggestion assertSuggestImportedFunction(String name,
       String returnType, [bool isDeprecated = false, CompletionRelevance relevance =
       CompletionRelevance.DEFAULT]) {
     if (computer is ImportedComputer) {
       return assertSuggestFunction(name, returnType, isDeprecated, relevance);
     } else {
       return assertNotSuggested(name);
     }
   }
 
+  CompletionSuggestion assertSuggestImportedFunctionTypeAlias(String name,
+      String returnType, [bool isDeprecated = false, CompletionRelevance relevance =
+      CompletionRelevance.DEFAULT]) {
+    if (computer is ImportedComputer) {
+      return assertSuggestFunctionTypeAlias(
+          name,
+          returnType,
+          isDeprecated,
+          relevance);
+    } else {
+      return assertNotSuggested(name);
+    }
+  }
+
   CompletionSuggestion assertSuggestImportedGetter(String name,
       String returnType, [CompletionRelevance relevance =
       CompletionRelevance.DEFAULT]) {
     if (computer is ImportedComputer) {
       return assertSuggestGetter(name, returnType, relevance);
     } else {
       return assertNotSuggested(name);
     }
   }
 
@@ skipping 77 matching lines @@
   CompletionSuggestion assertSuggestLocalFunction(String name,
       String returnType, [bool isDeprecated = false, CompletionRelevance relevance =
       CompletionRelevance.DEFAULT]) {
     if (computer is LocalComputer) {
       return assertSuggestFunction(name, returnType, isDeprecated, relevance);
     } else {
       return assertNotSuggested(name);
     }
   }
 
+  CompletionSuggestion assertSuggestLocalFunctionTypeAlias(String name,
+      String returnType, [bool isDeprecated = false, CompletionRelevance relevance =
+      CompletionRelevance.DEFAULT]) {
+    if (computer is LocalComputer) {
+      return assertSuggestFunctionTypeAlias(
+          name,
+          returnType,
+          isDeprecated,
+          relevance);
+    } else {
+      return assertNotSuggested(name);
+    }
+  }
+
   CompletionSuggestion assertSuggestLocalGetter(String name, String returnType,
       [CompletionRelevance relevance = CompletionRelevance.DEFAULT]) {
     if (computer is LocalComputer) {
       return assertSuggestGetter(name, returnType, relevance);
     } else {
       return assertNotSuggested(name);
     }
   }
 
   CompletionSuggestion assertSuggestLocalMethod(String name,
@@ skipping 384 matching lines @@
     // SimpleIdentifier  HideCombinator  ImportDirective
     addSource('/testAB.dart', '''
       library libAB;
       part '/partAB.dart';
       class A { }
       class B { }''');
     addSource('/partAB.dart', '''
       part of libAB;
       var T1;
       PB F1() => new PB();
+      typedef PB2 F2(int blat);
       class PB { }''');
     addSource('/testCD.dart', '''
       class C { }
       class D { }''');
     addTestSource('''
       import "/testAB.dart" show ^;
       import "/testCD.dart";
       class X {}''');
     computeFast();
     return computeFull(true).then((_) {
       assertSuggestImportedClass('A');
       assertSuggestImportedClass('B');
       assertSuggestImportedClass('PB');
       assertSuggestImportedTopLevelVar('T1', null);
       assertSuggestImportedFunction('F1', 'PB');
+      assertSuggestImportedFunctionTypeAlias('F2', null);
       assertNotSuggested('C');
       assertNotSuggested('D');
       assertNotSuggested('X');
       assertNotSuggested('Object');
     });
   }
 
   test_ConstructorName_importedClass() {
     // SimpleIdentifier  PrefixedIdentifier  TypeName  ConstructorName
     // InstanceCreationExpression
@@ skipping 37 matching lines @@
   }
 
   test_ExpressionStatement_identifier() {
     // SimpleIdentifier  ExpressionStatement  Block
     addSource('/testA.dart', '''
       _B F1() { }
       class A {int x;}
       class _B { }''');
     addTestSource('''
       import "/testA.dart";
+      typedef int F2(int blat);
       class C {foo(){O^} void bar() {}}''');
     computeFast();
     return computeFull(true).then((_) {
       assertSuggestImportedClass('A');
       assertSuggestImportedFunction('F1', '_B', false);
       assertSuggestLocalClass('C');
       assertSuggestLocalMethod('foo', 'C', null);
       assertSuggestLocalMethod('bar', 'C', 'void');
+      assertSuggestLocalFunctionTypeAlias('F2', 'int');
       assertSuggestLocalClass('C');
       assertNotSuggested('x');
       assertNotSuggested('_B');
     });
   }
 
   test_ExpressionStatement_name() {
     // ExpressionStatement  Block  BlockFunctionBody  MethodDeclaration
     addSource('/testA.dart', '''
       B T1;
@@ skipping 691 matching lines @@
       assertNotSuggested('bar2');
       assertNotSuggested('_B');
       assertSuggestLocalClass('Y');
       assertSuggestLocalClass('C');
       assertSuggestLocalVariable('f', null);
       assertNotSuggested('x');
       assertNotSuggested('e');
     });
   }
 }