Add a mid-sized integration test for the Dart Embedding Api which

runtime/vm/dart_api_impl_test.cc

 // Copyright (c) 2011, 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_api.h"
 
 #include "vm/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_state.h"
+#include "vm/port.h"
 #include "vm/unit_test.h"
 #include "vm/utils.h"
 #include "vm/verifier.h"
 
 namespace dart {
 
 
 #if defined(TARGET_ARCH_IA32)  // only ia32 can run execution tests.
 
 UNIT_TEST_CASE(ErrorHandles) {
@@ skipping 761 matching lines @@
   Dart_EnterIsolate(iso_2);
   EXPECT_EQ(iso_2, Isolate::Current());
   Dart_ShutdownIsolate();
   EXPECT(NULL == Isolate::Current());
   Dart_EnterIsolate(iso_1);
   EXPECT_EQ(iso_1, Isolate::Current());
   Dart_ShutdownIsolate();
   EXPECT(NULL == Isolate::Current());
 }
 
+static void MyCreatePortCallback(Dart_Isolate dest_isolate,
+                                 Dart_Port port) {
+}
 
 static bool MyPostMessageCallback(Dart_Isolate dest_isolate,
                                   Dart_Port send_port,
                                   Dart_Port reply_port,
                                   Dart_Message message) {
   return true;
 }
 
 
 static void MyClosePortCallback(Dart_Isolate dest_isolate,
                                 Dart_Port port) {
 }
 
 
 UNIT_TEST_CASE(SetMessageCallbacks) {
   Dart_Isolate dart_isolate = Dart_CreateIsolate(NULL, NULL);
-  Dart_SetMessageCallbacks(&MyPostMessageCallback, &MyClosePortCallback);
+  Dart_SetMessageCallbacks(
+      &MyCreatePortCallback, &MyPostMessageCallback, &MyClosePortCallback);
   Isolate* isolate = reinterpret_cast<Isolate*>(dart_isolate);
+  EXPECT_EQ(&MyCreatePortCallback, isolate->create_port_callback());
   EXPECT_EQ(&MyPostMessageCallback, isolate->post_message_callback());
   EXPECT_EQ(&MyClosePortCallback, isolate->close_port_callback());
   Dart_ShutdownIsolate();
 }
 
 
 #if defined(TARGET_ARCH_IA32)  // only ia32 can run execution tests.
 
 UNIT_TEST_CASE(FieldAccess) {
   const char* kScriptChars =
@@ skipping 1297 matching lines @@
                                Dart_NewString(""),
                                Dart_NewString("main"),
                                0,
                                NULL);
     EXPECT_VALID(result);
 
     Dart_ExitScope();  // Exit the Dart API scope.
   }
   Dart_ShutdownIsolate();
 }
+
 #endif  // TARGET_ARCH_IA32.
 
+
 }  // namespace dart