Evaluation of expression in context of library top-level

runtime/vm/debugger_api_impl_test.cc

 // Copyright (c) 2012, 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.
 
 #include "include/dart_debugger_api.h"
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/thread.h"
 #include "vm/unit_test.h"
 
@@ skipping 1556 matching lines @@
   EXPECT_VALID(point_class);
   Dart_Handle elem = Dart_EvaluateExpr(point_class, NewString("m['\"']"));
   EXPECT_VALID(elem);
   EXPECT(Dart_IsString(elem));
   EXPECT_STREQ("quote", ToCString(elem));
 
   elem = Dart_EvaluateExpr(point_class, NewString("m[\"\\t\"]"));
   EXPECT_VALID(elem);
   EXPECT(Dart_IsString(elem));
   EXPECT_STREQ("tab", ToCString(elem));
+
+  res = Dart_EvaluateExpr(script_lib, NewString("l..add(11)..add(-5)"));
+  EXPECT_VALID(res);
+  // List l now has 5 elements.
+
+  len = Dart_EvaluateExpr(script_lib, NewString("l.length + 1"));
+  EXPECT_VALID(len);
+  EXPECT(Dart_IsNumber(len));
+  EXPECT_EQ(6, ToInt64(len));
 }
 
 
 TEST_CASE(Debug_GetSupertype) {
   const char* kScriptChars =
       "class Test {\n"
       "}\n"
       "class Test1 extends Test {\n"
       "}\n"
       "class Test2<T> {\n"
@@ skipping 129 matching lines @@
 
   Dart_Handle list_type = Dart_InstanceGetType(list_access_test_obj);
   Dart_Handle super_type = Dart_GetSupertype(list_type);
   EXPECT(!Dart_IsError(super_type));
   super_type = Dart_GetSupertype(super_type);
   EXPECT(!Dart_IsError(super_type));
   EXPECT(super_type == Dart_Null());
 }
 
 }  // namespace dart