include constructor arguments in completion suggestions

pkg/analysis_server/test/services/completion/local_computer_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/src/protocol_server.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
 import 'package:analysis_server/src/services/completion/local_computer.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 207 matching lines @@
       break ^
     }
   }
 }
 ''');
     expect(computeFast(), isTrue);
     assertSuggestLabel('foo');
     assertSuggestLabel('bar');
   }
 
+  test_constructor_parameters_mixed_required_and_named() {
+    addTestSource('class A {A(x, {int y}) {^}}');
+    expect(computeFast(), isTrue);
+    assertSuggestParameter('x', null);
+    assertSuggestParameter('y', 'int');
+  }
+
+  test_constructor_parameters_mixed_required_and_positional() {
+    addTestSource('class A {A(x, [int y]) {^}}');
+    expect(computeFast(), isTrue);
+    assertSuggestParameter('x', null);
+    assertSuggestParameter('y', 'int');
+  }
+
+  test_constructor_parameters_named() {
+    addTestSource('class A {A({x, int y}) {^}}');
+    expect(computeFast(), isTrue);
+    assertSuggestParameter('x', null);
+    assertSuggestParameter('y', 'int');
+  }
+
+  test_constructor_parameters_positional() {
+    addTestSource('class A {A([x, int y]) {^}}');
+    expect(computeFast(), isTrue);
+    assertSuggestParameter('x', null);
+    assertSuggestParameter('y', 'int');
+  }
+
+  test_constructor_parameters_required() {
+    addTestSource('class A {A(x, int y) {^}}');
+    expect(computeFast(), isTrue);
+    assertSuggestParameter('x', null);
+    assertSuggestParameter('y', 'int');
+  }
+
   test_continue_from_loop_to_switch() {
     addTestSource('''
 void main() {
   switch (x) {
     foo: case 1:
       break;
     bar: case 2:
       while (true) {
         continue ^;
       }
@@ skipping 454 matching lines @@
         assertSuggestLocalMethod('m', 'A', 'void');
     expect(suggestion.parameterNames, hasLength(2));
     expect(suggestion.parameterNames[0], 'x');
     expect(suggestion.parameterTypes[0], 'dynamic');
     expect(suggestion.parameterNames[1], 'y');
     expect(suggestion.parameterTypes[1], 'int');
     expect(suggestion.requiredParameterCount, 2);
     expect(suggestion.hasNamedParameters, false);
   }
 }