Improve code generation for 'bottom' and 'dynamic' arguments.

pkg/analysis_server/test/services/correction/fix_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.correction.fix;
 
 import 'package:analysis_server/src/protocol.dart' hide AnalysisError;
 import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/local_memory_index.dart';
@@ skipping 2164 matching lines @@
 }
 ''');
     assertHasFix(FixKind.CHANGE_TO, '''
 class MyClass {}
 main() {
   MyClass v = null;
 }
 ''');
   }
 
+  void test_undefinedFunction_create_dynamicArgument() {
+    _indexTestUnit('''
+main() {
+  dynamic v;
+  test(v);
+}
+''');
+    assertHasFix(FixKind.CREATE_FUNCTION, '''
+main() {
+  dynamic v;
+  test(v);
+}
+
+void test(v) {
+}
+''');
+  }
+
+  void test_undefinedFunction_create_dynamicReturnType() {
+    _indexTestUnit('''
+main() {
+  dynamic v = test();
+}
+''');
+    assertHasFix(FixKind.CREATE_FUNCTION, '''
+main() {
+  dynamic v = test();
+}
+
+test() {
+}
+''');
+  }
+
   void test_undefinedFunction_create_fromFunction() {
     _indexTestUnit('''
 main() {
   int v = myUndefinedFunction(1, 2.0, '3');
 }
 ''');
     assertHasFix(FixKind.CREATE_FUNCTION, '''
 main() {
   int v = myUndefinedFunction(1, 2.0, '3');
 }
@@ skipping 60 matching lines @@
   main() {
     process(items);
   }
 }
 
 void process(List<int> items) {
 }
 ''');
   }
 
+  void test_undefinedFunction_create_nullArgument() {
+    _indexTestUnit('''
+main() {
+  test(null);
+}
+''');
+    assertHasFix(FixKind.CREATE_FUNCTION, '''
+main() {
+  test(null);
+}
+
+void test(arg0) {
+}
+''');
+  }
+
   void test_undefinedFunction_create_returnType_bool_expressions() {
     assert_undefinedFunction_create_returnType_bool("!test();");
     assert_undefinedFunction_create_returnType_bool("b && test();");
     assert_undefinedFunction_create_returnType_bool("test() && b;");
     assert_undefinedFunction_create_returnType_bool("b || test();");
     assert_undefinedFunction_create_returnType_bool("test() || b;");
   }
 
   void test_undefinedFunction_create_returnType_bool_statements() {
     assert_undefinedFunction_create_returnType_bool("assert ( test() );");
@@ skipping 596 matching lines @@
       positions.add(new Position(testFile, offset));
     }
     return positions;
   }
 
   void _indexTestUnit(String code) {
     resolveTestUnit(code);
     index.indexUnit(context, testUnit);
   }
 }