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

runtime/vm/dart_api_impl.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/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart.h"
@@ skipping 257 matching lines @@
   // Make a copy of the error message as the original message string
   // may get deallocated when we return back from the Dart API call.
   const String& error = String::Handle(
       Isolate::Current()->object_store()->sticky_error());
   const Object& obj = Object::Handle(ApiError::New(error));
   *handle = Api::NewLocalHandle(obj);
 }
 
 
 DART_EXPORT void Dart_SetMessageCallbacks(
+    Dart_CreatePortCallback create_port_callback,
     Dart_PostMessageCallback post_message_callback,
     Dart_ClosePortCallback close_port_callback) {
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
+  ASSERT(create_port_callback != NULL);
   ASSERT(post_message_callback != NULL);
   ASSERT(close_port_callback != NULL);
+  isolate->set_create_port_callback(create_port_callback);
   isolate->set_post_message_callback(post_message_callback);
   isolate->set_close_port_callback(close_port_callback);
 }
 
 
 static RawInstance* DeserializeMessage(void* data) {
   // Create a snapshot object using the buffer.
   const Snapshot* snapshot = Snapshot::SetupFromBuffer(data);
   ASSERT(snapshot->IsPartialSnapshot());
 
@@ skipping 1631 matching lines @@
   }
   // Since this is only a snapshot the root library should not be set.
   isolate->object_store()->set_root_library(Library::Handle());
   SnapshotWriter writer(true, snapshot_buffer, ApiAllocator);
   writer.WriteFullSnapshot();
   *snapshot_size = writer.Size();
   return Api::Success();
 }
 
 
+DART_EXPORT Dart_Port Dart_CreatePort() {
+  return PortMap::CreatePort();
+}
+
+
+DART_EXPORT bool Dart_IsolateHasActivePorts() {
+  Isolate* isolate = Isolate::Current();
+  ASSERT(isolate);
+  return isolate->active_ports() > 0;
+}
+
+
 static uint8_t* allocator(uint8_t* ptr, intptr_t old_size, intptr_t new_size) {
   void* new_ptr = realloc(reinterpret_cast<void*>(ptr), new_size);
   return reinterpret_cast<uint8_t*>(new_ptr);
 }
 
 
 DART_EXPORT bool Dart_PostIntArray(Dart_Port port,
                                    intptr_t len,
                                    intptr_t* data) {
   uint8_t* buffer = NULL;
@@ skipping 188 matching lines @@
   ASSERT(isolate != NULL);
   ApiState* state = isolate->api_state();
   ASSERT(state != NULL);
   ApiLocalScope* scope = state->top_scope();
   ASSERT(scope != NULL);
   return scope->zone().Reallocate(ptr, old_size, new_size);
 }
 
 
 }  // namespace dart