Support for generic function as type arguments in DeclarationResolver.

pkg/analyzer/test/generated/declaration_resolver_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 engine.declaration_resolver_test;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 502 matching lines @@
   test_genericFunction_asTopLevelVariableType() async {
     String code = r'''
 int Function(int, String) v;
 ''';
     CompilationUnit unit = await resolveSource(code);
     // re-resolve
     _cloneResolveUnit(unit);
     // no other validations than built into DeclarationResolver
   }
 
+  test_genericFunction_asTypeArgument() async {
+    String code = r'''
+List<Function(int)> v;
+''';
+    CompilationUnit unit = await resolveSource(code);
+    // re-resolve
+    _cloneResolveUnit(unit);
+    // no other validations than built into DeclarationResolver
+  }
+
+  test_genericFunction_asTypeArgument_lessNodes() async {
+    String code = r'''
+Map<Function<int>> v;
+''';
+    CompilationUnit unit = await resolveSource(code);
+    // re-resolve
+    _cloneResolveUnit(unit);
+    // no other validations than built into DeclarationResolver
+  }
+
+  test_genericFunction_asTypeArgument_moreNodes() async {
+    String code = r'''
+List<Function<int>, Function<String>> v;
+''';
+    CompilationUnit unit = await resolveSource(code);
+    // re-resolve
+    _cloneResolveUnit(unit);
+    // no other validations than built into DeclarationResolver
+  }
+
+  test_genericFunction_asTypeArgument_noNodes() async {
+    String code = r'''
+List v;
+''';
+    CompilationUnit unit = await resolveSource(code);
+    // re-resolve
+    _cloneResolveUnit(unit);
+    // no other validations than built into DeclarationResolver
+  }
+
+  test_genericFunction_asTypeArgument_ofInitializer() async {
+    String code = r'''
+var v = <Function(int)>[];
+''';
+    CompilationUnit unit = await resolveSource(code);
+    CompilationUnit newUnit = _cloneResolveUnit(unit);
+    var v = newUnit.declarations[0] as TopLevelVariableDeclaration;
+    var initializer = v.variables.variables[0].initializer as ListLiteral;
+    expect(initializer.typeArguments.arguments[0].type, isNotNull);
+  }
+
   test_invalid_functionDeclaration_getter_inFunction() async {
     String code = r'''
 var v = (() {
   main() {
     int get zzz => 42;
   }
 });
 ''';
     CompilationUnit unit = await resolveSource(code);
     FunctionElement getterElement =
@@ skipping 259 matching lines @@
     expect(element.type.toString(), "<T>(T, T) → T");
     expect(t.element, same(tElement));
 
     // re-resolve
     CompilationUnit unit2 = _cloneResolveUnit(unit);
     node = _findSimpleIdentifier(unit2, code, 'max').parent;
     t = node.typeParameters.typeParameters[0];
     expect(t.element, same(tElement));
   }
 }