EDK: Add Dispatcher::SupportsEntrypointClass().

mojo/edk/system/shared_buffer_dispatcher_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/edk/system/shared_buffer_dispatcher.h"
 
 #include <limits>
 #include <memory>
 
 #include "mojo/edk/embedder/simple_platform_support.h"
@@ skipping 165 matching lines @@
   EXPECT_EQ('x', static_cast<char*>(mapping2->GetBase())[0]);
 
   EXPECT_EQ(MOJO_RESULT_OK, dispatcher->Close());
 
   // Check that we can still read/write to mappings after the dispatcher has
   // gone away.
   static_cast<char*>(mapping2->GetBase())[1] = 'y';
   EXPECT_EQ('y', static_cast<char*>(mapping1->GetBase())[kSize / 2 + 1]);
 }
 
+TEST_F(SharedBufferDispatcherTest, SupportsEntrypointClass) {
+  MojoResult result = MOJO_RESULT_INTERNAL;
+  auto d = SharedBufferDispatcher::Create(
+      platform_support(), SharedBufferDispatcher::kDefaultCreateOptions, 100u,
+      &result);
+  ASSERT_TRUE(d);
+  EXPECT_EQ(MOJO_RESULT_OK, result);
+
+  EXPECT_FALSE(
+      d->SupportsEntrypointClass(Dispatcher::EntrypointClass::MESSAGE_PIPE));
+  EXPECT_FALSE(d->SupportsEntrypointClass(
+      Dispatcher::EntrypointClass::DATA_PIPE_PRODUCER));
+  EXPECT_FALSE(d->SupportsEntrypointClass(
+      Dispatcher::EntrypointClass::DATA_PIPE_CONSUMER));
+  EXPECT_TRUE(d->SupportsEntrypointClass(Dispatcher::EntrypointClass::BUFFER));
+
+  // TODO(vtl): Check that it actually returns |MOJO_RESULT_INVALID_ARGUMENT|
+  // for methods in unsupported entrypoint classes.
+
+  EXPECT_EQ(MOJO_RESULT_OK, d->Close());
+}
+
 TEST_F(SharedBufferDispatcherTest, DuplicateBufferHandle) {
   const uint64_t kSize = 100u;
 
   MojoResult result = MOJO_RESULT_INTERNAL;
   auto dispatcher1 = SharedBufferDispatcher::Create(
       platform_support(), SharedBufferDispatcher::kDefaultCreateOptions, kSize,
       &result);
   EXPECT_EQ(MOJO_RESULT_OK, result);
 
   // Map and write something.
@@ skipping 123 matching lines @@
   EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
             dispatcher->MapBuffer(0, 0, MOJO_MAP_BUFFER_FLAG_NONE, &mapping));
   EXPECT_FALSE(mapping);
 
   EXPECT_EQ(MOJO_RESULT_OK, dispatcher->Close());
 }
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo