Retained size for instance in Observatory.

runtime/vm/service_test.cc

 // Copyright (c) 2013, 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 "platform/globals.h"
 
 #include "include/dart_debugger_api.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
@@ skipping 342 matching lines @@
   EXPECT_VALID(lib);
 
   // Build a mock message handler and wrap it in a dart port.
   ServiceTestMessageHandler handler;
   Dart_Port port_id = PortMap::CreatePort(&handler);
   Dart_Handle port = Api::NewHandle(isolate, SendPort::New(port_id));
   EXPECT_VALID(port);
   EXPECT_VALID(Dart_SetField(lib, NewString("port"), port));
 
   ObjectIdRing* ring = isolate->object_id_ring();
-  const String& str = String::Handle(String::New("value"));
-  intptr_t str_id = ring->GetIdForObject(str.raw());
-  Dart_Handle valid_id = Dart_NewInteger(str_id);
+  const Array& arr = Array::Handle(Array::New(1, Heap::kOld));
+  {
+    HANDLESCOPE(isolate);
+    const String& str = String::Handle(String::New("value", Heap::kOld));
+    arr.SetAt(0, str);
+  }
+  intptr_t arr_id = ring->GetIdForObject(arr.raw());
+  Dart_Handle valid_id = Dart_NewInteger(arr_id);
   EXPECT_VALID(valid_id);
   EXPECT_VALID(Dart_SetField(lib, NewString("validId"), valid_id));
 
   Instance& service_msg = Instance::Handle();
 
   // null
   service_msg = Eval(lib, "[port, ['objects', 'null'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   handler.filterMsg("name");
@@ skipping 78 matching lines @@
       handler.msg());
 
   // object id ring / valid
   service_msg = Eval(lib, "[port, ['objects', '$validId'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   handler.filterMsg("name");
   handler.filterMsg("size");
   handler.filterMsg("id");
   EXPECT_STREQ(
-      "{\"type\":\"String\","
-      "\"class\":{\"type\":\"@Class\","
-      "\"user_name\":\"_OneByteString\"},\"fields\":[],"
-      "\"valueAsString\":\"\\\"value\\\"\"}",
+      "{\"type\":\"Array\","
+      "\"class\":{\"type\":\"@Class\",\"user_name\":\"_List\"},"
+      "\"fields\":[],"
+      "\"length\":1,"
+      "\"elements\":[{"
+          "\"index\":0,"
+          "\"value\":{\"type\":\"@String\","
+          "\"class\":{\"type\":\"@Class\",\"user_name\":\"_OneByteString\"},"
+          "\"valueAsString\":\"\\\"value\\\"\"}}]}",
       handler.msg());
 
   // object id ring / invalid => expired
   service_msg = Eval(lib, "[port, ['objects', '99999999'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   handler.filterMsg("name");
   EXPECT_STREQ(
       "{\"type\":\"Null\",\"id\":\"objects\\/expired\","
       "\"valueAsString\":\"<expired>\"}",
@@ skipping 57 matching lines @@
                      "['expr'], ['this+99']]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   handler.filterMsg("name");
   EXPECT_STREQ(
       "{\"type\":\"Error\",\"id\":\"\","
       "\"message\":\"expected at most 3 arguments but found 4\\n\","
       "\"request\":{\"arguments\":[\"objects\",\"int-123\",\"eval\",\"foo\"],"
       "\"option_keys\":[\"expr\"],\"option_values\":[\"this+99\"]}}",
       handler.msg());
+
+  // Retained by single instance.
+  service_msg = Eval(lib,
+                     "[port, ['objects', '$validId', 'retained'], [], []]");
+  Service::HandleIsolateMessage(isolate, service_msg);
+  handler.HandleNextMessage();
+  handler.filterMsg("name");
+  ExpectSubstringF(handler.msg(),
+                   "\"id\":\"objects\\/int-%" Pd "\"",
+                   arr.raw()->Size() + arr.At(0)->Size());
 }
 
 
 TEST_CASE(Service_Libraries) {
   const char* kScript =
       "var port;\n"  // Set to our mock port by C++.
       "var libVar = 54321;\n"
       "\n"
       "main() {\n"
       "}";
@@ skipping 815 matching lines @@
   service_msg = Eval(h_lib, "[port, ['profile'], ['tags'], ['hidden']]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   // Expect error.
   EXPECT_SUBSTRING("\"type\":\"Error\"", handler.msg());
 }
 
 #endif  // !defined(TARGET_ARCH_ARM64)
 
 }  // namespace dart