Initial import of libmojo r405848

This brings libmojo in sync with libchrome.

Bug: 27569341
Test: mma -j32 libmojo
Change-Id: Ia7cb877e46dd3f86f18888b5d8d80bef5468b266

1 files changed, 414 insertions, 0 deletions

diff --git a/mojo/public/cpp/bindings/tests/binding_unittest.cc b/mojo/public/cpp/bindings/tests/binding_unittest.cc
new file mode 100644
index 0000000..4838ee8
--- /dev/null
+++ b/mojo/public/cpp/bindings/tests/binding_unittest.cc
@@ -0,0 +1,414 @@
+// Copyright 2015 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.
+
+// Note: This file tests both binding.h (mojo::Binding) and strong_binding.h
+// (mojo::StrongBinding).
+
+#include "mojo/public/cpp/bindings/binding.h"
+
+#include <stdint.h>
+#include <utility>
+
+#include "base/macros.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "mojo/public/interfaces/bindings/tests/sample_interfaces.mojom.h"
+#include "mojo/public/interfaces/bindings/tests/sample_service.mojom.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace mojo {
+namespace {
+
+class BindingTestBase : public testing::Test {
+ public:
+  BindingTestBase() {}
+  ~BindingTestBase() override {}
+
+  base::MessageLoop& loop() { return loop_; }
+
+ private:
+  base::MessageLoop loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(BindingTestBase);
+};
+
+class ServiceImpl : public sample::Service {
+ public:
+  explicit ServiceImpl(bool* was_deleted = nullptr)
+      : was_deleted_(was_deleted) {}
+  ~ServiceImpl() override {
+    if (was_deleted_)
+      *was_deleted_ = true;
+  }
+
+ private:
+  // sample::Service implementation
+  void Frobinate(sample::FooPtr foo,
+                 BazOptions options,
+                 sample::PortPtr port,
+                 const FrobinateCallback& callback) override {
+    callback.Run(1);
+  }
+  void GetPort(InterfaceRequest<sample::Port> port) override {}
+
+  bool* const was_deleted_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceImpl);
+};
+
+template <typename... Args>
+void DoSetFlagAndRunClosure(bool* flag,
+                            const base::Closure& closure,
+                            Args... args) {
+  *flag = true;
+  closure.Run();
+}
+
+template <typename... Args>
+base::Callback<void(Args...)> SetFlagAndRunClosure(
+    bool* flag,
+    const base::Closure& callback = base::Closure()) {
+  return base::Bind(&DoSetFlagAndRunClosure<Args...>, flag, callback);
+}
+
+// BindingTest -----------------------------------------------------------------
+
+using BindingTest = BindingTestBase;
+
+TEST_F(BindingTest, Close) {
+  bool called = false;
+  sample::ServicePtr ptr;
+  auto request = GetProxy(&ptr);
+  base::RunLoop run_loop;
+  ptr.set_connection_error_handler(
+      SetFlagAndRunClosure(&called, run_loop.QuitClosure()));
+  ServiceImpl impl;
+  Binding<sample::Service> binding(&impl, std::move(request));
+
+  binding.Close();
+  EXPECT_FALSE(called);
+  run_loop.Run();
+  EXPECT_TRUE(called);
+}
+
+// Tests that destroying a mojo::Binding closes the bound message pipe handle.
+TEST_F(BindingTest, DestroyClosesMessagePipe) {
+  bool encountered_error = false;
+  ServiceImpl impl;
+  sample::ServicePtr ptr;
+  auto request = GetProxy(&ptr);
+  base::RunLoop run_loop;
+  ptr.set_connection_error_handler(
+      SetFlagAndRunClosure(&encountered_error, run_loop.QuitClosure()));
+  bool called = false;
+  base::RunLoop run_loop2;
+  {
+    Binding<sample::Service> binding(&impl, std::move(request));
+    ptr->Frobinate(nullptr, sample::Service::BazOptions::REGULAR, nullptr,
+                   SetFlagAndRunClosure<int32_t>(&called,
+                                                 run_loop2.QuitClosure()));
+    run_loop2.Run();
+    EXPECT_TRUE(called);
+    EXPECT_FALSE(encountered_error);
+  }
+  // Now that the Binding is out of scope we should detect an error on the other
+  // end of the pipe.
+  run_loop.Run();
+  EXPECT_TRUE(encountered_error);
+
+  // And calls should fail.
+  called = false;
+  ptr->Frobinate(nullptr, sample::Service::BazOptions::REGULAR, nullptr,
+                 SetFlagAndRunClosure<int32_t>(&called,
+                                               run_loop2.QuitClosure()));
+  base::RunLoop().RunUntilIdle();
+  EXPECT_FALSE(called);
+}
+
+// Tests that the binding's connection error handler gets called when the other
+// end is closed.
+TEST_F(BindingTest, ConnectionError) {
+  bool called = false;
+  {
+    ServiceImpl impl;
+    sample::ServicePtr ptr;
+    Binding<sample::Service> binding(&impl, GetProxy(&ptr));
+    base::RunLoop run_loop;
+    binding.set_connection_error_handler(
+        SetFlagAndRunClosure(&called, run_loop.QuitClosure()));
+    ptr.reset();
+    EXPECT_FALSE(called);
+    run_loop.Run();
+    EXPECT_TRUE(called);
+    // We want to make sure that it isn't called again during destruction.
+    called = false;
+  }
+  EXPECT_FALSE(called);
+}
+
+// Tests that calling Close doesn't result in the connection error handler being
+// called.
+TEST_F(BindingTest, CloseDoesntCallConnectionErrorHandler) {
+  ServiceImpl impl;
+  sample::ServicePtr ptr;
+  Binding<sample::Service> binding(&impl, GetProxy(&ptr));
+  bool called = false;
+  binding.set_connection_error_handler(SetFlagAndRunClosure(&called));
+  binding.Close();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_FALSE(called);
+
+  // We can also close the other end, and the error handler still won't be
+  // called.
+  ptr.reset();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_FALSE(called);
+}
+
+class ServiceImplWithBinding : public ServiceImpl {
+ public:
+  ServiceImplWithBinding(bool* was_deleted,
+                         const base::Closure& closure,
+                         InterfaceRequest<sample::Service> request)
+      : ServiceImpl(was_deleted),
+        binding_(this, std::move(request)),
+        closure_(closure) {
+    binding_.set_connection_error_handler(
+        base::Bind(&ServiceImplWithBinding::OnConnectionError,
+                   base::Unretained(this)));
+  }
+
+ private:
+  ~ServiceImplWithBinding() override{
+    closure_.Run();
+  }
+
+  void OnConnectionError() { delete this; }
+
+  Binding<sample::Service> binding_;
+  base::Closure closure_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceImplWithBinding);
+};
+
+// Tests that the binding may be deleted in the connection error handler.
+TEST_F(BindingTest, SelfDeleteOnConnectionError) {
+  bool was_deleted = false;
+  sample::ServicePtr ptr;
+  // This should delete itself on connection error.
+  base::RunLoop run_loop;
+  new ServiceImplWithBinding(&was_deleted, run_loop.QuitClosure(),
+                             GetProxy(&ptr));
+  ptr.reset();
+  EXPECT_FALSE(was_deleted);
+  run_loop.Run();
+  EXPECT_TRUE(was_deleted);
+}
+
+// Tests that explicitly calling Unbind followed by rebinding works.
+TEST_F(BindingTest, Unbind) {
+  ServiceImpl impl;
+  sample::ServicePtr ptr;
+  Binding<sample::Service> binding(&impl, GetProxy(&ptr));
+
+  bool called = false;
+  base::RunLoop run_loop;
+  ptr->Frobinate(nullptr, sample::Service::BazOptions::REGULAR, nullptr,
+                 SetFlagAndRunClosure<int32_t>(&called,
+                                               run_loop.QuitClosure()));
+  run_loop.Run();
+  EXPECT_TRUE(called);
+
+  called = false;
+  auto request = binding.Unbind();
+  EXPECT_FALSE(binding.is_bound());
+  // All calls should fail when not bound...
+  ptr->Frobinate(nullptr, sample::Service::BazOptions::REGULAR, nullptr,
+                 SetFlagAndRunClosure<int32_t>(&called,
+                                               run_loop.QuitClosure()));
+  base::RunLoop().RunUntilIdle();
+  EXPECT_FALSE(called);
+
+  called = false;
+  binding.Bind(std::move(request));
+  EXPECT_TRUE(binding.is_bound());
+  // ...and should succeed again when the rebound.
+  base::RunLoop run_loop2;
+  ptr->Frobinate(nullptr, sample::Service::BazOptions::REGULAR, nullptr,
+                 SetFlagAndRunClosure<int32_t>(&called,
+                                               run_loop2.QuitClosure()));
+  run_loop2.Run();
+  EXPECT_TRUE(called);
+}
+
+class IntegerAccessorImpl : public sample::IntegerAccessor {
+ public:
+  IntegerAccessorImpl() {}
+  ~IntegerAccessorImpl() override {}
+
+ private:
+  // sample::IntegerAccessor implementation.
+  void GetInteger(const GetIntegerCallback& callback) override {
+    callback.Run(1, sample::Enum::VALUE);
+  }
+  void SetInteger(int64_t data, sample::Enum type) override {}
+
+  DISALLOW_COPY_AND_ASSIGN(IntegerAccessorImpl);
+};
+
+TEST_F(BindingTest, SetInterfacePtrVersion) {
+  IntegerAccessorImpl impl;
+  sample::IntegerAccessorPtr ptr;
+  Binding<sample::IntegerAccessor> binding(&impl, &ptr);
+  EXPECT_EQ(3u, ptr.version());
+}
+
+TEST_F(BindingTest, PauseResume) {
+  bool called = false;
+  base::RunLoop run_loop;
+  sample::ServicePtr ptr;
+  auto request = GetProxy(&ptr);
+  ServiceImpl impl;
+  Binding<sample::Service> binding(&impl, std::move(request));
+  binding.PauseIncomingMethodCallProcessing();
+  ptr->Frobinate(nullptr, sample::Service::BazOptions::REGULAR, nullptr,
+                 SetFlagAndRunClosure<int32_t>(&called,
+                                               run_loop.QuitClosure()));
+  EXPECT_FALSE(called);
+  base::RunLoop().RunUntilIdle();
+  // Frobinate() should not be called as the binding is paused.
+  EXPECT_FALSE(called);
+
+  // Resume the binding, which should trigger processing.
+  binding.ResumeIncomingMethodCallProcessing();
+  run_loop.Run();
+  EXPECT_TRUE(called);
+}
+
+// Verifies the connection error handler is not run while a binding is paused.
+TEST_F(BindingTest, ErrorHandleNotRunWhilePaused) {
+  bool called = false;
+  base::RunLoop run_loop;
+  sample::ServicePtr ptr;
+  auto request = GetProxy(&ptr);
+  ServiceImpl impl;
+  Binding<sample::Service> binding(&impl, std::move(request));
+  binding.set_connection_error_handler(
+      SetFlagAndRunClosure(&called, run_loop.QuitClosure()));
+  binding.PauseIncomingMethodCallProcessing();
+
+  ptr.reset();
+  base::RunLoop().RunUntilIdle();
+  // The connection error handle should not be called as the binding is paused.
+  EXPECT_FALSE(called);
+
+  // Resume the binding, which should trigger the error handler.
+  binding.ResumeIncomingMethodCallProcessing();
+  run_loop.Run();
+  EXPECT_TRUE(called);
+}
+
+// StrongBindingTest -----------------------------------------------------------
+
+using StrongBindingTest = BindingTestBase;
+
+// Tests that destroying a mojo::StrongBinding closes the bound message pipe
+// handle but does *not* destroy the implementation object.
+TEST_F(StrongBindingTest, DestroyClosesMessagePipe) {
+  base::RunLoop run_loop;
+  bool encountered_error = false;
+  bool was_deleted = false;
+  ServiceImpl impl(&was_deleted);
+  sample::ServicePtr ptr;
+  auto request = GetProxy(&ptr);
+  ptr.set_connection_error_handler(
+      SetFlagAndRunClosure(&encountered_error, run_loop.QuitClosure()));
+  bool called = false;
+  base::RunLoop run_loop2;
+  {
+    StrongBinding<sample::Service> binding(&impl, std::move(request));
+    ptr->Frobinate(nullptr, sample::Service::BazOptions::REGULAR, nullptr,
+                   SetFlagAndRunClosure<int32_t>(&called,
+                                                 run_loop2.QuitClosure()));
+    run_loop2.Run();
+    EXPECT_TRUE(called);
+    EXPECT_FALSE(encountered_error);
+  }
+  // Now that the StrongBinding is out of scope we should detect an error on the
+  // other end of the pipe.
+  run_loop.Run();
+  EXPECT_TRUE(encountered_error);
+  // But destroying the StrongBinding doesn't destroy the object.
+  ASSERT_FALSE(was_deleted);
+}
+
+class ServiceImplWithStrongBinding : public ServiceImpl {
+ public:
+  ServiceImplWithStrongBinding(bool* was_deleted,
+                               InterfaceRequest<sample::Service> request)
+      : ServiceImpl(was_deleted), binding_(this, std::move(request)) {}
+
+  StrongBinding<sample::Service>& binding() { return binding_; }
+
+ private:
+  StrongBinding<sample::Service> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceImplWithStrongBinding);
+};
+
+// Tests the typical case, where the implementation object owns the
+// StrongBinding (and should be destroyed on connection error).
+TEST_F(StrongBindingTest, ConnectionErrorDestroysImpl) {
+  sample::ServicePtr ptr;
+  bool was_deleted = false;
+  // Will delete itself.
+  base::RunLoop run_loop;
+  new ServiceImplWithBinding(&was_deleted, run_loop.QuitClosure(),
+                             GetProxy(&ptr));
+
+  base::RunLoop().RunUntilIdle();
+  EXPECT_FALSE(was_deleted);
+
+  ptr.reset();
+  EXPECT_FALSE(was_deleted);
+  run_loop.Run();
+  EXPECT_TRUE(was_deleted);
+}
+
+// Tests that even when the implementation object owns the StrongBinding, that
+// the implementation can still be deleted (which should result in the message
+// pipe being closed). Also checks that the connection error handler doesn't get
+// called.
+TEST_F(StrongBindingTest, ExplicitDeleteImpl) {
+  bool ptr_error_handler_called = false;
+  sample::ServicePtr ptr;
+  auto request = GetProxy(&ptr);
+  base::RunLoop run_loop;
+  ptr.set_connection_error_handler(
+      SetFlagAndRunClosure(&ptr_error_handler_called, run_loop.QuitClosure()));
+  bool was_deleted = false;
+  ServiceImplWithStrongBinding* impl =
+      new ServiceImplWithStrongBinding(&was_deleted, std::move(request));
+  bool binding_error_handler_called = false;
+  impl->binding().set_connection_error_handler(
+      SetFlagAndRunClosure(&binding_error_handler_called));
+
+  base::RunLoop().RunUntilIdle();
+  EXPECT_FALSE(ptr_error_handler_called);
+  EXPECT_FALSE(was_deleted);
+
+  delete impl;
+  EXPECT_FALSE(ptr_error_handler_called);
+  EXPECT_TRUE(was_deleted);
+  was_deleted = false;  // It shouldn't be double-deleted!
+  run_loop.Run();
+  EXPECT_TRUE(ptr_error_handler_called);
+  EXPECT_FALSE(was_deleted);
+
+  EXPECT_FALSE(binding_error_handler_called);
+}
+
+}  // namespace
+}  // mojo